BGP ADVANCE NX-OS & IOS

Cisco IOS CLI	Cisco NX-OS CLI
Configuring a Route-Reflector

router bgp 10 no synchronization network 192.168.11.1 mask 255.255.255.255 neighbor 192.168.2.1 remote-as 10 neighbor 192.168.2.1 update-source Loopback0 neighbor 192.168.2.1 route-reflector-client no auto-summary	router bgp 10 address-family ipv4 unicast network 192.168.11.1/32 neighbor 192.168.2.1 remote-as 10 update-source loopback0 address-family ipv4 unicast route-reflector-client

Configuring Confederations

router bgp no synchronization bgp confederation identifier 10 bgp confederation peers 65535 network 192.168.11.1 mask 255.255.255.255 neighbor 192.168.10.2 remote-as 65535 no auto-summary	router bgp 65534 confederation identifier 10 confederation peers 65535 address-family ipv4 unicast network 192.168.11.1/32 neighbor 192.168.10.2 remote-as 65535 address-family ipv4 unicast

Configuring a Peer Template

router bgp 10 no synchronization network 192.168.11.1 mask 255.255.255.255 neighbor IBGP-Template peer-group neighbor IBGP-Template password cisco123 neighbor IBGP-Template update-source Loopback0 neighbor 192.168.2.1 remote-as 10 neighbor 192.168.2.1 peer-group IBGP-Template no auto-summary	router bgp 10 address-family ipv4 unicast network 192.168.11.1/32 template peer IBGP-Template password 3 a667d47acc18ea6b update-source loopback0 address-family ipv4 unicast neighbor 192.168.2.1 remote-as 10 inherit peer IBGP-Template

Configuring a Policy Template

router bgp 10 template peer-policy EBGP-Policy default-originate send-community exit-peer-policy no synchronization network 192.168.11.1 mask 255.255.255.255 neighbor 192.168.10.2 remote-as 20 neighbor 192.168.10.2 inherit peer-policy EBGP-Policy no auto-summary	router bgp 10 address-family ipv4 unicast network 192.168.11.1/32 template peer-policy EBGP-Policy send-community default-originate neighbor 192.168.10.2 remote-as 20 address-family ipv4 unicast inherit peer-policy EBGP-Policy 10

Configuring an Outbound Neighbor Route-Map Policy

route-map EBGP-Policy permit 10 set as-path prepend 10 10 10 router bgp 10 no synchronization network 192.168.11.1 mask 255.255.255.255 neighbor 192.168.10.2 remote-as 20 neighbor 192.168.10.2 route-map EBGP-Policy out no auto-summary	route-map EBGP-Policy permit 10 set as-path prepend 10 10 10 router bgp 10 address-family ipv4 unicast network 192.168.11.1/32 neighbor 192.168.10.2 remote-as 20 address-family ipv4 unicast route-map EBGP-Policy out

Configuring an Outbound Prefix-List

ip prefix-list EBGP-Policy seq 5 permit 192.168.11.1/32 router bgp 10 no synchronization neighbor 192.168.10.2 remote-as 20 neighbor 192.168.10.2 prefix-list EBGP-Policy out no auto-summary	ip prefix-list EBGP-Policy seq 5 permit 192.168.11.1/32 router bgp 10 neighbor 192.168.10.2 remote-as 20 address-family ipv4 unicast prefix-list EBGP-Policy out

Verification Command Comparison

The following table compares some useful show commands for verifying and troubleshooting a BGP network configuration.

Cisco NX-OS BGP	Cisco IOS Software BGP	Command Description
show bgp convergence	-	Displays global convergence information
show bgp process	-	Displays global BGP process information
show bgp sessions	-	Displays information for all neighbors
show bgp statistics	-	Displays global BGP process statistics
-	-	-
show ip bgp <option>	show ip bgp	Displays BGP Process and BGP table entries
show ip bgp x.x.x.x	show ip bgp x.x.x.x	Displays a specific network in the BGP table
show ip bgp x.x.x.x vrf	-	Displays a network in a specified VRF BGP table
show ip bgp x.x.x.x/len	show ip bgp x.x.x.x mask	Displays a specific prefix in the BGP table
show ip bgp x.x.x.x/len longer-prefix	show ip bgp x.x.x.x mask longer-prefix	Displays a prefix in the table with longer prefixes
show ip bgp all	show ip bgp all	Displays the BGP table for all protocol families
show ip bgp community <word>	show ip bgp community <#>	Displays routes with a specific regular expression
show ip bgp community <aa:nn>	-	Displays routes with a specific community value
show ip bgp community internet	-	Displays BGP routes advertised to the Internet
show ip bgp community no-advertise	show ip bgp community no-advertise	Displays BGP routes not advertised to peers
show ip bgp community no-export	show ip bgp community no-export	Displays BGP routes not exported to next AS
show ip bgp community no-export-spoofed	-	Displays BGP routes not sent to outside local AS
show ip bgp community-list <name>	show ip bgp community-list <name>	Displays a specific BGP community list
show ip bgp dampening dampened-paths	show ip bgp dampening dampened-paths	Displays all Dampened paths
show ip bgp dampening flap-statistics	show ip bgp dampening flap-statistics	Displays flap statistics for BGP routes
show ip bgp dampening history-paths	-	Displays all history paths
show ip bgp dampening parameters	show ip bgp dampening parameters	Displays all of the Dampening parameters
show ip bgp extcommunity <word>	-	Displays routes with a specific regular expression for extended communities
show ip bgp extcommunity-list <name>	-	Displays a specific BGP extended community list
show ip bgp filter-list	show ip bgp filter-list	Displays all routes matching a specified filter list
show ip bgp flap-statistics	-	Displays all BGP route flap statistics
show ip bgp ipv4 multicast <option>	show ip bgp ipv4 multicast <option>	Displays BGP IPv4 multicast address families
show ip bgp ipv4 unicast <option>	show ip bgp ipv4 unicast <option>	Displays BGP IPv4 unicast address families
show ip bgp neighbors	show ip bgp neighbors	Displays detailed neighbor information
show ip bgp neighbors x.x.x.x	show ip bgp neighbors x.x.x.x	Displays detailed information for a neighbor
show ip bgp nexthop x.x.x.x	-	Displays all routes matching a specified next-hop
show ip bgp nexthop-database	-	Displays the next-hop database
show ip bgp paths	show ip bgp paths	Displays all BGP paths
show ip bgp peer-policy	-	Displays BGP peer policy by specified name
show ip bgp peer-session	-	Displays information about a peer session
show ip bgp peer-template	show ip bgp unicast ipv4 template	Displays information about a peer template
show ip bgp prefix-list	show ip bgp prefix-list	Displays routes matching a specified prefix-list
show ip bgp regexp	show ip bgp regexp	Displays routes matching a regular-expression
show ip bgp received-paths	-	Displays the paths stored for soft reconfiguration
show ip bgp route-map	show ip bgp route-map	Displays BGP routes matching a route-map
show ip bgp summary	show ip bgp summary	Displays a summary list of neighbors and statistics
show ip bgp vrf	show ip bgp vpnv4 vrf	Displays information for a specified BGP VRF