Information Technology Reference
In-Depth Information
The
show bgp ipv6
output shows the BGP path information in the IPv6 RIB. The prefix
2001:500::/29 is a locally generated path, which is indicated by the unspecified address ::
being used as the next hop.
Example 12-7 shows BGP path information about a specific prefix.
Example 12-7
IPv6 BGP Path Information on a Specific Prefix
R5#show bgp ipv6 2001:600::/29
BGP routing table entry for 2001:600::/29, version 3
Paths: (2 available, best #1, table Global-IPv6-Table)
Not advertised to any peer
Local
2001:400:0:1234::6 (metric 30) from 2001:400:0:1234::2 (10.1.1.2)
Origin IGP, metric 0, localpref 100, valid, internal, best
Originator: 10.1.1.6, Cluster list: 10.1.1.2, 10.1.1.1
Local
2001:400:0:1234::6 (metric 30) from 2001:400:0:1234::3 (10.1.1.3)
Origin IGP, metric 0, localpref 100, valid, internal
Originator: 10.1.1.6, Cluster list: 10.1.1.3, 10.1.1.1
The detailed path information for 2001:600::/29 shows the influence of MP-BGP's 32-bit
dependencies. The cluster ID and originator ID (derived from the router ID) are shown as
IPv4 addresses.
Final Configurations
The final BGP configurations are shown in the following examples. The final configurations
have IPv4 and IPv6 running in a dual-stack configuration.
Example 12-8 shows the final BGP configuration for R1.
Example 12-8
R1 Final BGP Configuration
router bgp 65000
no bgp default ipv4-unicast
no synchronization
bgp log-neighbor-changes
neighbor IPv4_RR peer-group
neighbor IPv4_RR remote-as 65000
neighbor IPv4_RR update-source Loopback0
neighbor IPv4_RR activate
neighbor IPv4_RRC peer-group
neighbor IPv4_RRC remote-as 65000
neighbor IPv4_RRC update-source Loopback0
neighbor IPv4_RRC route-reflector-client
neighbor IPv4_RRC activate
neighbor IPv6_RR peer-group
neighbor IPv6_RR remote-as 65000
neighbor IPv6_RR update-source Loopback0
