### Configure Per-Neighbor SoO Value with BGP Peer Group

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-per-neighbor-soo-configuration.html

This example demonstrates the configuration of a BGP peer group with a specific SoO value, and then assigning a neighbor to this group. It includes VRF and interface setup.

```cisco-ios
ip cef
ip vrf SOO_VRF
 rd 1:1
 route-target export 1:1
 route-target import 1:1
 exit
interface GigabitEthernet 1/0/0
 ip vrf forwarding SOO_VRF
 ip address 192.168.1.2 255.255.255.0
 exit
router bgp 50000
 address-family ipv4 vrf SOO_VRF
  neighbor SOO_GROUP peer-group
  neighbor SOO_GROUP soo 65000:65
  neighbor 192.168.1.1 remote-as 65000
  neighbor 192.168.1.1 activate
  neighbor 192.168.1.1 peer-group SOO_GROUP 
  end
```

--------------------------------

### BGP Monitoring Protocol Configuration Examples

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-monitoring-protocol.html

Log messages demonstrating the configuration and activation of a BGP Monitoring Protocol server.

```text
*Apr  8 21:04:16.249: BGPBMP: BMP server 2 active open process success - 20.1.1.1/9000
*Apr  8 21:04:16.249: BGPBMP: TCP KA interval is set to 15
*Apr  8 21:04:16.250: BGPBMP: Register read/write notification callbacks with BMP server 2 TCB - 20.1.1.1/9000
*Apr  8 21:04:16.250: BGPBMP: Initiation msg sent to BMP server 2 - 20.1.1.1/9000
*Apr  8 21:04:16.250: BGPBMP: BMP server 2 connection - 20.1.1.1/9000 up, invoke refresh event
```

--------------------------------

### Show VRF Interfaces Output Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/per-vrf-assignment-of-bgp-router-id.html

Example output showing VRF instances and their associated interfaces. This helps in verifying the VRF configuration on interfaces.

```text
Router# show ip vrf interfaces
Interface         IP-Address      VRF                      Protocol
Serial2           192.168.4.1     vrf_trans                up      
Serial3           192.168.5.1     vrf_user                 up 
```

--------------------------------

### Configuring a Best External Path on an RR for an Intercluster

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-best-external.html

This example shows how to configure RR1 to calculate, install, and advertise the best external path to its intercluster RR neighbors.

```cisco-ios
router bgp 1
 neighbor 10.5.1.1 remote-as 1
 neighbor 10.5.1.2 remote-as 1
 address-family ipv4 unicast
 neighbor 10.5.1.1 activate 
 neighbor 10.5.1.2 activate
 bgp additional-paths select best-external
 bgp additional-paths install
 neighbor 10.5.1.1 advertise best-external
 neighbor 10.5.1.2 advertise best-external
 end
```

--------------------------------

### Example BGP Configuration

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-ls.html

Example configuration for BGP, including neighbor setup and address-family activation for both IPv4 and link-state.

```text
router bgp 100
 bgp log-neighbor-changes
 neighbor 10.0.0.1 remote-as 100
 neighbor 10.0.0.4 remote-as 100
 ! 
 address-family ipv4
  neighbor 10.0.0.1 activate
  neighbor 10.0.0.4 activate
 exit-address-family
 ! 
 address-family link-state link-state
  neighbor 10.0.0.1 activate
  neighbor 10.0.0.4 activate
 exit-address-family

```

--------------------------------

### Example BGP Configuration Commands

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

Provides a concrete example of BGP configuration commands, demonstrating the application of global and address-family-specific settings.

```cisco ios xr configuration
router bgp 45000
 router-id 172.17.1.99
 bgp log-neighbor-changes
 neighbor 192.168.1.2 remote-as 40000
 neighbor 192.168.3.2 remote-as 50000
 address-family ipv4 unicast
  neighbor 192.168.1.2 activate
  network 172.1.1.0 mask 255.255.255.0
  exit-address-family
 address-family ipv4 multicast
  neighbor 192.168.3.2 activate
  neighbor 192.168.3.2 advertisement-interval 25
  network 172.16.1.0 mask 255.255.255.0
  exit-address-family
 address-family ipv4 vrf vpn1
  neighbor 192.168.3.2 activate
  network 172.21.1.0 mask 255.255.255.0
  exit-address-family


```

--------------------------------

### Enter Global Configuration Mode

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bfd-bgp-multihop-client-support-and-cbit-ipv-and-ipv.html

Enters global configuration mode.

```cli
Device# configure terminal
```

--------------------------------

### Router B: Verify Unequal Cost Best Paths

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-link-bandwidth.html

This example shows the output of the 'show ip bgp' command on Router B, verifying that two unequal cost best paths have been installed into the BGP routing table, with bandwidth for each link displayed.

```text
Router B# `**show ip bgp 192.168.1.0**`
BGP routing table entry for 192.168.1.0/24, version 48
Paths: (2 available, best #2)
Multipath: eBGP
  Advertised to update-groups:
     1          2
  200
    172.16.1.1 from 172.16.1.2 (192.168.1.1)
      Origin incomplete, metric 0, localpref 100, valid, external, multipath, best
      Extended Community: 0x0:0:0
      DMZ-Link Bw 278 kbytes
  200
    172.16.2.2 from 172.16.2.2 (192.168.1.1)
      Origin incomplete, metric 0, localpref 100, valid, external, multipath, best
      Extended Community: 0x0:0:0
      DMZ-Link Bw 625 kbytes 
```

--------------------------------

### Example: Disabling all client-to-client reflection

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-multiple-cluster-ids.html

The following example disables all intracluster and intercluster client-to-client reflection:

```text
router bgp 65000
 no bgp client-to-client reflection all
```

--------------------------------

### Show Voice Port Configuration Example

Source: https://www.cisco.com/c/en/us/td/docs/ios/voice/fxs/configuration/guide/15_1/fxs_15_1_cg_book/fxsbasic.html

This example shows a snippet of the running configuration related to voice ports, including power denial timeouts and supervisory disconnect settings.

```text
. . . voice-port 2/0 timeouts power-denial 500
! voice-port 2/1 no supervisory disconnect
. . .
```

--------------------------------

### Example: Redistributing Prefixes into IPv6 Multiprotocol BGP

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/ipv-routing-multiprotocol-bgp-extensions-for-ipv.html

This example redistributes RIP routes into the IPv6 unicast database.

```cisco
router bgp 64900
no bgp default ipv4-unicast
address-family ipv6 unicast
 redistribute rip
```

--------------------------------

### Show IP Prefix List Details (Example Output)

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Example output of the 'show ip prefix-list detail' command, illustrating prefix list configuration and hit counts.

```cisco
Router# `**show ip prefix-list detail super172**`

ip prefix-list super172:
   count: 1, range entries: 0, sequences: 5 - 5, refcount: 4
   seq 5 permit 172.0.0.0/8 (hit count: 1, refcount: 1)
```

--------------------------------

### Example: Advertising Routes into IPv6 Multiprotocol BGP

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/ipv-routing-multiprotocol-bgp-extensions-for-ipv.html

This example injects an IPv6 network into the IPv6 unicast database for advertising.

```cisco
router bgp 65000
 no bgp default ipv4-unicast
address-family ipv6 unicast
  network 2001:DB8::/24
```

--------------------------------

### Show Running Configuration Example Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Partial output of the 'show running-config' command illustrating the BGP and route-map configuration applied in the preceding steps.

```cli
Device# `**show running-config**`
. 
. 
. 
router bgp 40000
 neighbor 192.168.1.2 remote-as 45000
 !
 address-family ipv4
 neighbor 192.168.1.2 activate
 neighbor 192.168.1.2 route-map PREPEND out
 no auto-summary
 no synchronization
 network 172.17.1.0 mask 255.255.255.0
 exit-address-family
!
route-map PREPEND permit 10
 set as-path prepend 40000 40000
. 
. 
. 
```

--------------------------------

### Install Flowspec Policy on All Interfaces (IPv4)

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/C3PL-BGP-Flowspec-Client.html

Installs the flowspec policy on all interfaces for the IPv4 address family.

```text
Device(config-flowspec-af)# local-install interface-all
```

--------------------------------

### Verify Policy List Configuration Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Sample output from the 'show ip policy-list' command, verifying the creation and configuration of a policy list with match clauses.

```cli
Router# show ip policy-list
POLICY-LIST-NAME-1

policy-list POLICY-LIST-NAME-1 permit
  Match clauses:
    metric 20 
    as-path (as-path filter): 1
```

--------------------------------

### Example: Configuring BGP—IPv6 NSR

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-ipv6-nsr.html

This is a complete configuration example for BGP—IPv6 NSR.

```cisco
router bgp 4000
 address-family ipv6 unicast
 neighbor 2001:DB8:0:CC00::1 remote-as 4000
 neighbor 2001:DB8:0:CC00::1 activate
 neighbor 2001:DB8:0:CC00::1 ha-mode sso

```

--------------------------------

### Show VRF Command Output Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-per-neighbor-soo-configuration.html

Example output of the 'show ip vrf' command displaying a VRF named SOO_VRF.

```text
Device# `**show ip vrf**`

Name                             Default RD            Interfaces
SOO_VRF                                 1:1                GE1/0/0
```

--------------------------------

### Example: Configuring an IPv6 Multiprotocol BGP Peer Group

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/ipv-routing-multiprotocol-bgp-extensions-for-ipv.html

This example configures an IPv6 multiprotocol BGP peer group named group1.

```cisco
router bgp 65000
no bgp default ipv4-unicast
neighbor group1 peer-group
neighbor 2001:DB8:0:CC00::1 remote-as 64600
address-family ipv6 unicast
 neighbor group1 activate
 neighbor 2001:DB8:0:CC00::1 peer-group group1
```

--------------------------------

### BGP Topology Translation Configuration Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-support-for-mtr.html

This example demonstrates configuring BGP for a VIDEO topology and setting up topology translation with a specific neighbor. It includes neighbor configurations, address family settings, and topology translation parameters.

```cli
router bgp 45000
 scope global
  neighbor 172.16.1.1 remote-as 50000 
  neighbor 192.168.2.2 remote-as 55000
  neighbor 172.16.1.1 transport multi-session
  neighbor 192.168.2.2 transport multi-session
   address-family ipv4 
    topology VIDEO 
     bgp tid 100
     neighbor 172.16.1.1 activate 
     neighbor 192.168.2.2 activate 
     neighbor 192.168.2.2 translate-topology 200
     end
```

--------------------------------

### Configuration Example for BGP NSR Auto Sense

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-nsr-auto-sense.html

Example configuration to disable the BGP NSR Auto Sense feature.

```text
router bgp 65600
 bgp sso route-refresh-enable
      
```

--------------------------------

### Configure BGP Policy Accounting with Community Lists and Route Maps

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-policy-accounting-output-interface-accounting.html

This configuration example demonstrates how to set up BGP community lists and a route map to match these communities to specific accounting traffic indexes. This is useful for granular traffic accounting based on BGP attributes.

```text
ip community-list 30 permit 100:190
ip community-list 40 permit 100:198
ip community-list 50 permit 100:197
ip community-list 60 permit 100:296
!
route-map set_bucket permit 10
 match community-list 30
 set traffic-index 2
!
route-map set_bucket permit 20
 match community-list 40
 set traffic-index 3
!
route-map set_bucket permit 30
 match community-list 50
 set traffic-index 4
!
route-map set_bucket permit 40
 match community-list 60
 set traffic-index 5
```

--------------------------------

### Example: Disabling intracluster client-to-client reflection for any cluster ID

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-multiple-cluster-ids.html

The following example disables intracluster client-to-client reflection for any cluster ID:

```text
router bgp 65000
 no bgp client-to-client reflection intra-cluster cluster-id any
```

--------------------------------

### Example: Configure All Supplementary Feature Codes

Source: https://www.cisco.com/c/en/us/td/docs/ios/voice/fxs/configuration/guide/15_1/fxs_15_1_cg_book/fxsfeatmd.html

An example demonstrating the configuration of multiple supplementary feature codes within the STCAPP feature mode, including conference, drop, hangup, toggle, and transfer.

```ios
Router(config)# stcapp call-control mode feature
Router(config-stcapp-fmcode)# conference 33
Router(config-stcapp-fmcode)# drop-last-active-conferee 44
Router(config-stcapp-fmcode)# hangup-last-active-call 11
Router(config-stcapp-fmcode)# toggle-between-two-calls 55
Router(config-stcapp-fmcode)# transfer 22
Router(config-stcapp-fmcode)# exit
Router(config)#
```

--------------------------------

### Example: Importing IP Prefixes into a VRF

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/irg-sup-ip-perf.html

This configuration example demonstrates how to import unicast prefixes into a VRF named 'green' using an IP prefix list and a route map.

```configuration
! 
ip prefix-list COLORADO seq 5 permit 10.131.64.0/19
ip prefix-list COLORADO seq 10 permit 172.31.2.0/30
ip prefix-list COLORADO seq 15 permit 172.31.1.1/32
! 
ip vrf green
 rd 200:1
 import ipv4 unicast map UNICAST
 route-target export 200:10
 route-target import 200:10
! 
 exit
! 
route-map UNICAST permit 10
 match ip address prefix-list COLORADO
! 
 exit


```

--------------------------------

### Activate Interface

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-multiprotocol-bgp-mp-bgp-support-for-clns.html

Turns on the interface, making it operational.

```network-device-cli
Router(config-if)# no shutdown
```

--------------------------------

### Example: Enabling Send and Receive for an AIGP Attribute

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp_accumulated_igp.html

Example showing how to enable AIGP send and receive capability in address family configuration mode.

```text
Device# configure terminal
Device(config)# router bgp 40000
Device(config-router)# address-family ipv4 unicast
Device(config-router-af)# neighbor 192.168.1.1 aigp
Device(config-router-af)# exit
```

--------------------------------

### Show IP BGP Output Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-support-for-next-hop-address-tracking.html

Example output from the 'show ip bgp' command, illustrating network routes and their corresponding next-hop addresses.

```text
BGP table version is 7, local router ID is 172.17.1.99
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
   Network          Next Hop            Metric LocPrf Weight Path
*  10.1.1.0/24      192.168.1.2              0             0 40000 i
*  10.2.2.0/24      192.168.3.2              0             0 50000 i
*> 172.16.1.0/24    0.0.0.0                  0         32768 i
*> 172.17.1.0/24    0.0.0.0                  0         32768 

```

--------------------------------

### Install Flowspec Policy on All Interfaces within VRF (IPv4)

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/C3PL-BGP-Flowspec-Client.html

Installs the flowspec policy on all interfaces for the IPv4 address family within a VRF.

```text
Device(config-flowspec-vrf-af)# local-install interface-all
```

--------------------------------

### Verify Route Map and Policy List Reference Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Sample output from the 'show route-map' command, verifying that a route map has been created and references a policy list.

```cli
Router# show route-map 

route-map ROUTE-MAP-NAME-1, deny, sequence 10
  Match clauses:
  Set clauses:
  Policy routing matches: 0 packets, 0 bytes
route-map ROUTE-MAP-NAME-1, permit, sequence 10
  Match clauses:
    IP Policy lists:
        POLICY-LIST-NAME-1
  Set clauses:
  Policy routing matches: 0 packets, 0 bytes
```

--------------------------------

### Enter Interface Configuration Mode

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-per-neighbor-soo-configuration.html

Selects a specific interface and enters interface configuration mode to configure its parameters.

```network-device-cli
Device(config)# interface GigabitEthernet 1/0/0
```

--------------------------------

### Filtering Outbound BGP Updates by NSAP Prefix

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-multiprotocol-bgp-mp-bgp-support-for-clns.html

Filter outbound BGP updates based on NSAP prefixes using a CLNS filter-set applied to a BGP peer group. This example denies prefixes starting with 49.0404 and permits others starting with 49.

```cisco ios xe
clns filter-set routes0404 deny 49.0404...
clns filter-set routes0404 permit 49...
router bgp 65404
no bgp default ipv4-unicast
neighbor ebgp-peers remote-as 65303
address-family nsap
  neighbor ebgp-peers prefix-list routes0404 out
  neighbor 10.6.7.8 peer-group ebgp-peers
```

--------------------------------

### Example: Configuring a Route Map for IPv6 Multiprotocol BGP Prefixes

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/ipv-routing-multiprotocol-bgp-extensions-for-ipv.html

This example configures a route map to permit IPv6 unicast routes matching a specific prefix list.

```cisco
router bgp 64900
no bgp default ipv4-unicast
neighbor 2001:DB8:0:CC00::1 remote-as 64700
address-family ipv6 unicast
 neighbor 2001:DB8:0:CC00::1 activate
 neighbor 2001:DB8:0:CC00::1 route-map rtp in
pv6 prefix-list cisco seq 10 permit 2001:DB8::/24
route-map rtp permit 10
 match ipv6 address prefix-list cisco
```

--------------------------------

### BGP Routing Table Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Example output of the 'show ip bgp' command, illustrating route entries with next hop, metric, local preference, weight, and path attributes.

```text
BGP table version is 8, local router ID is 172.17.1.99
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete

   Network          Next Hop            Metric    LocPrf   Weight  Path

*> 10.1.1.0/24         192.168.1.2           0             150      40000 i
*> 10.2.2.0/24         192.168.3.2           0             100      50000 i

*> 10.3.0.0/16         192.168.1.2           0             150      40000 i
*                      192.168.3.2           0             100      50000 i

*> 172.17.1.0/24       0.0.0.0               0             32768          i



```

--------------------------------

### Show BGP Summary Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-dynamic-neighbors.html

Example output of the 'show ip bgp summary' command, illustrating a dynamically created BGP neighbor and its listen range membership.

```text
Router# **show ip bgp summary**
BGP router identifier 192.168.3.1, local AS number 45000
BGP table version is 1, main routing table version 1
Neighbor        V    AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
*192.168.3.2    4 50000       2       2        0    0    0 00:00:37        0
* Dynamically created based on a listen range command
Dynamically created neighbors: 1/(200 max), Subnet ranges: 1
BGP peergroup group192 listen range group members: 
  192.168.0.0/16 

```

--------------------------------

### Example: Per-Neighbor Cluster ID

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-multiple-cluster-ids.html

The following example is configured on a route reflector. The neighbor (client) at IPv6 address 2001:DB8:1::1 is configured to have the cluster ID of 0.0.0.6:

```text
router bgp 6500
 neighbor 2001:DB8:1::1 cluster-id 0.0.0.6
```

--------------------------------

### Enable IPv6 Multipaths

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/eibgp-multipath-for-non-vrf-interfaces-ipv-ipv.html

Example of enabling IPv6 multipaths on non-VRF interfaces.

```text
Device> enable
Device# configure terminal
Device(config)# router bgp 64497
Device(config-router)# address-family ipv6 unicast
Device(config-router-af)# maximum-paths eibgp 4
Device(config-router-af)# end
```

--------------------------------

### Create and Enter BGP Policy List Configuration Mode

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Enters policy list configuration mode and creates a BGP policy list that permits routes matching subsequent clauses.

```cli
Router(config)# ip policy-list POLICY-LIST-NAME-1 permit
```

--------------------------------

### Enable IPv4 Multipaths

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/eibgp-multipath-for-non-vrf-interfaces-ipv-ipv.html

Example of enabling IPv4 multipaths on non-VRF interfaces.

```text
Device> enable
Device# configure terminal
Device(config)# router bgp 64496
Device(config-router)# address-family ipv4 unicast
Device(config-router-af)# maximum-paths eibgp 4
Device(config-router-af)# end
```

--------------------------------

### Create Route Map

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-support-for-mtr.html

Creates a route map and enters route-map configuration mode. This example creates a route map named 10NET.

```cli
Device(config)# route-map 10NET
```

--------------------------------

### Example: Classifying IP Traffic and Enabling BGP Policy Accounting

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/irg-bgp-pol-acct.html

This configuration example demonstrates enabling BGP policy accounting on an interface and using a table-map to modify bucket numbers.

```cisco
router bgp 65000
 table-map set_bucket
 network 10.15.1.0 mask 255.255.255.0
 neighbor 10.14.1.1 remote-as 65100
!
ip classless
ip bgp-community new-format 
!
interface POS7/0
 ip address 10.15.1.2 255.255.255.0
 no ip directed-broadcast
 bgp-policy accounting
 no keepalive
 crc 32
 clock source internal

```

--------------------------------

### Create Peer Policy Template

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

Enters policy-template configuration mode and defines a new peer policy template. 'GLOBAL' is the name of the template.

```cli
Device(config-router)# template peer-policy GLOBAL
```

--------------------------------

### Example: Specifying Match Criteria for BGP Policy Accounting

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/irg-bgp-pol-acct.html

This configuration example shows how to specify BGP communities in community lists and map them to accounting buckets using route maps.

```cisco
ip community-list 30 permit 100:190
ip community-list 40 permit 100:198
ip community-list 50 permit 100:197
ip community-list 60 permit 100:296
!
route-map set_bucket permit 10
match community 30
set traffic-index 2
!
route-map set_bucket permit 20
match community 40
set traffic-index 3
!
route-map set_bucket permit 30
match community 50
set traffic-index 4
!
route-map set_bucket permit 40
match community 60
set traffic-index 5

```

--------------------------------

### Dual AS Confederation Configuration Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-support-for-dual-as-configuration-for-network-as-migrations.html

Configure Router 1 as part of a BGP confederation, specifying local AS and dual-AS options for a neighbor.

```cisco-ios
interface Serial3/0/0
 ip address 10.3.3.11 255.255.255.0
!
router bgp 65534
 no synchronization
 bgp confederation identifier 100
 bgp router-id 10.0.0.11
 neighbor 10.3.3.33 remote-as 50000
 neighbor 10.3.3.33 local-as 45000 no-prepend replace-as dual-as
```

--------------------------------

### Configure Route Map

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Creates a route map and enters route map configuration mode. This example creates a route map named 'PREPEND' with a permit sequence.

```cli
Device(config)# route-map PREPEND permit 10
```

--------------------------------

### Example: Disabling intracluster client-to-client reflection for specified cluster IDs

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-multiple-cluster-ids.html

The following example disables intracluster client-to-client reflection for the specified cluster IDs 0.0.0.1, 14, 15, and 0.0.0.6:

```text
router bgp 65000
 no bgp client-to-client reflection intra-cluster cluster-id 0.0.0.1 14 15 0.0.0.6
```

--------------------------------

### Show BGP Routing Table Entry Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

Example output of the 'show ip bgp' command, detailing a specific network's routing table entry, including origin, metric, and neighbor information.

```text
RouterB# show ip bgp 10.1.1.0

BGP routing table entry for 10.1.1.0/24, version 2
Paths: (1 available, best #1)
  Advertised to update-groups:
     2         
  65536
    192.168.1.2 from 192.168.1.2 (10.1.1.99)
      Origin IGP, metric 0, localpref 100, valid, external, best

```

--------------------------------

### Creating an aggregate entry with AS_SET

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-4.html

This example shows how to create an aggregate entry using the same rules as in the previous example, but the path advertised for this route will be an AS_SET consisting of all elements contained in all paths that are being summarized.

```text
router bgp 100
 aggregate-address 10.0.0.0 255.0.0.0 as-set 

```

--------------------------------

### Enter Address Family Configuration Mode

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/detecting-and-mitigating-a-bgp-slow-peer.html

Enters address family configuration mode.

```cli
Router(config-router)# address-family ipv4
```

--------------------------------

### BGP Graceful Restart Disabled Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-graceful-restart-per-neighbor.html

This example shows partial output from the 'show ip bgp neighbors' command for a BGP peer where graceful restart is disabled.

```text
Device# `**show ip bgp neighbors 192.168.3.2**`

BGP neighbor is 192.168.3.2,  remote AS 50000, external link
 Inherits from template S2 for session parameters
  BGP version 4, remote router ID 192.168.3.2
  BGP state = Established, up for 00:01:41
  Last read 00:00:45, last write 00:00:45, hold time is 180, keepalive intervals
  Neighbor sessions:
    1 active, is multisession capable
  Neighbor capabilities:
    Route refresh: advertised and received(new)
    Address family IPv4 Unicast: advertised and received
!
Address tracking is enabled, the RIB does have a route to 192.168.3.2
  Connections established 1; dropped 0
  Last reset never
  Transport(tcp) path-mtu-discovery is enabled
  Graceful-Restart is disabled
Connection state is ESTAB, I/O status: 1, unread input bytes: 0 

```

--------------------------------

### Example configuration for Multicast VPN BGP Dampening

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/multicast-vpn-bgp-dampening.html

This example shows multicast VPN BGP dampening applied to VRFs named blue and red, but not to the VRF named green.

```cisco ios
address-family ipv4 mvpn vrf blue
 bgp dampening

address-family ipv4 mvpn vrf red
 bgp dampening

address-family ipv4 mvpn vrf green
 no bgp dampening
```

--------------------------------

### Example: Static Slow Peer Using Peer Policy Template

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/detecting-and-mitigating-a-bgp-slow-peer.html

Apply static slow peer configuration to multiple neighbors by using a peer policy template. This simplifies management for a group of peers.

```text
configure terminal
  bgp as-number
   neighbor <ip-address> peer-policy <policy-name> slow peer
  exit
```

--------------------------------

### Configure Route Map

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-4-soft-configuration.html

Creates a route map and enters route-map configuration mode. This example defines a route map named 'LOCAL' with a permit action for sequence number 10.

```cli
Device(config)# route-map LOCAL permit 10
```

--------------------------------

### Advertise IPv6 Prefix

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/ipv6-multicast-address-family-support-for-multiprotocol-bgp.html

Example command to advertise a specified prefix into the IPv6 BGP database.

```text
Device(config-router-af)# network 2001:DB8::/24
```

--------------------------------

### Display BGP Summary

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-4.html

Example command to display information about the status of all BGP connections.

```cli
Device# show ip bgp summary

```

--------------------------------

### Sample BGP Routing Table Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

Example output of the 'show ip bgp' command, illustrating BGP table entries including network, next hop, and path information. This output helps in understanding the learned routes.

```text
BGP table version is 12, local router ID is 10.1.1.99
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
   Network          Next Hop            Metric LocPrf Weight Path
*> 10.1.1.0/24      0.0.0.0                  0         32768 i
```

--------------------------------

### Configure Basic BGP Route Server Client

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-bgp-route-server.html

Example configuration for a BGP router where a neighbor is designated as a route server client.

```cli
router bgp 65000
 neighbor 10.0.0.1 remote-as 100
 neighbor 10.0.0.5 remote-as 500
 address-family ipv4 unicast
 neighbor 10.0.0.1 activate
 neighbor 10.0.0.1 route-server-client
!
```

--------------------------------

### Display All BGP Paths

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-4.html

Example command to display information about all BGP paths in the database.

```cli
Device# show ip bgp paths

```

--------------------------------

### Create Peer Session Template

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

Enters session-template configuration mode and creates a peer session template.

```cli
Router(config-router)# template peer-session CORE1
```

--------------------------------

### Install Additional Paths

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-best-external.html

Enables BGP to calculate a backup path for a given address family and to install it into the RIB and CEF. This step is necessary if the RR is enabled for forwarding (the RR is in the forwarding plane). Otherwise, this step is unnecessary.

```text
Router(config-router-af)# bgp additional-paths install
```

--------------------------------

### Sample Output for Show IP BGP Injected-Paths

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

This is a sample output for the 'show ip bgp injected-paths' command, illustrating the format and details of injected BGP routes.

```text
Router# **show ip bgp injected-paths**

BGP table version is 11, local router ID is 10.0.0.1
Status codes:s suppressed, d damped, h history, * valid, > best, i -
internal
Origin codes:i - IGP, e - EGP, ? - incomplete
   Network          Next Hop            Metric LocPrf Weight Path
*> 172.16.0.0       10.0.0.2                               0 ?
*> 172.17.0.0/16    10.0.0.2                               0 ?
```

--------------------------------

### Sample BGP Neighbor Policy Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/configuring-a-basic-bgp-network.html

Example output from the 'show ip bgp neighbors' command, illustrating locally configured and inherited policies for a specific neighbor.

```text
Neighbor: 192.168.1.2, Address-Family: IPv4 Unicast
Locally configured policies:
 route-map ROUTE in
Inherited polices:
 prefix-list NO-MARKETING in
 route-map ROUTE in
 weight 300
 maximum-prefix 10000
```

--------------------------------

### Configuring BGP to not advertise inactive routes

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-4.html

This example configures BGP to not advertise inactive routes.

```text
Device(config)# `**router bgp 50000**`
Device(config-router)# `**address-family ipv4 unicast**`
Device(config-router-af)# `**bgp suppress-inactive**`
Device(config-router-af)# `**end**`

```

--------------------------------

### Display Running Configuration

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Shows the current active configuration of the device. This is useful for verifying applied settings.

```cli
Device# show running-config
```

--------------------------------

### Clear BGP Neighbor Sessions

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-4.html

Example command to clear and reset all BGP neighbor sessions.

```cli
Device# clear ip bgp *

```

--------------------------------

### Example: Configuring a BGP Process, BGP Router ID, and IPv6 Multiprotocol BGP Peer

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/ipv-routing-multiprotocol-bgp-extensions-for-ipv.html

This example enables IPv6 globally, configures a BGP process, sets the BGP router ID, and configures and activates an IPv6 multiprotocol BGP peer.

```cisco
ipv6 unicast-routing
!
router bgp 65000
 no bgp default ipv4-unicast
 bgp router-id 192.168.99.70
 neighbor 2001:DB8:0:CC00::1 remote-as 64600
 address-family ipv6 unicast
  neighbor 2001:DB8:0:CC00::1 activate
```

--------------------------------

### Flexible FAC Configuration Example

Source: https://www.cisco.com/c/en/us/td/docs/ios/voice/fxs/configuration/guide/15_1/fxs_15_1_cg_book/fxssccpsplmft.html

Example configuration where phone users are not required to dial the FAC prefix for Call Forward All and Call Forward Cancel features, using flexible FAC settings.

```text
Router# **show running-config** . . . stcapp feature access-code call forward all #74 call forward cancel 18#
```

--------------------------------

### BGP Graceful Restart Enabled Example

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/bgp-graceful-restart-per-neighbor.html

This example shows partial output from the 'show ip bgp neighbors' command for a BGP peer where graceful restart is enabled. It highlights the default values for restart and stale-path timers.

```text
Device# `**show ip bgp neighbors 192.168.1.2**`

BGP neighbor is 192.168.1.2,  remote AS 40000, external link
 Inherits from template S1 for session parameters
  BGP version 4, remote router ID 192.168.1.2
  BGP state = Established, up for 00:02:11
  Last read 00:00:23, last write 00:00:27, hold time is 180, keepalive intervals
  Neighbor sessions:
    1 active, is multisession capable
  Neighbor capabilities:
    Route refresh: advertised and received(new)
    Address family IPv4 Unicast: advertised and received
    Graceful Restart Capability: advertised
    Multisession Capability: advertised and received
!
Address tracking is enabled, the RIB does have a route to 192.168.1.2
  Connections established 1; dropped 0
  Last reset never
  Transport(tcp) path-mtu-discovery is enabled
  Graceful-Restart is enabled, restart-time 120 seconds, stalepath-time 360 secs
Connection state is ESTAB, I/O status: 1, unread input bytes: 0 

```

--------------------------------

### Show BGP Routes Matching AS-Path Regex Example Output

Source: https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16-6/irg-xe-16-6-book/connecting-to-a-service-provider-using-external-bgp.html

Example output of the 'show ip bgp regexp' command, illustrating BGP routes that match the regular expression for AS-path 65550.

```text
RouterB# **show ip bgp regexp ^65550$**
BGP table version is 4, local router ID is 172.17.1.99
Status codes: s suppressed, d damped, h history, * valid, > best, i - internal,
              r RIB-failure, S Stale
Origin codes: i - IGP, e - EGP, ? - incomplete
   Network          Next Hop            Metric LocPrf Weight Path
*> 10.2.2.0/24      192.168.3.2              0             0 65550 i
```