实验拓扑:
配置R1:
ipv6 unicast-routing
interface Loopback0
ip address 1.1.1.1 255.255.255.0
!
interface Ethernet0/0
ipv6 address 2001:1:1:1::1/64
!
interface Serial1/0
ipv6 address 2001:A:A:A::1/64
!
interface Serial1/1
ipv6 address 2001:B:B:B::1/64
router bgp 1
no synchronization
bgp router-id 1.1.1.1
neighbor 2001:A:A:A::2 remote-as 2
neighbor 2001:B:B:B::3 remote-as 3
no auto-summary
!
address-family ipv6
neighbor 2001:A:A:A::2 activate
neighbor 2001:B:B:B::3 activate
network 2001:1:1:1::/64
exit-address-family
配置R2:
ipv6 unicast-routing
interface Loopback0
ip address 2.2.2.2 255.255.255.0
interface Ethernet0/0
ipv6 address 2001:2:2:2::2/64
interface Serial1/0
ipv6 address 2001:A:A:A::2/64
router bgp 2
bgp router-id 2.2.2.2
no bgp default ipv4-unicast
neighbor 2001:A:A:A::1 remote-as 1
address-family ipv4
neighbor 2001:A:A:A::1 activate
no auto-summary
no synchronization
exit-address-family
address-family ipv6
neighbor 2001:A:A:A::1 activate
network 2001:2:2:2::/64
exit-address-family
配置R3:
ipv6 unicast-routing
interface Loopback0
ip address 3.3.3.3 255.255.255.0
interface Ethernet0/0
ipv6 address 2001:3:3:1::3/64
ipv6 address 2001:3:3:2::3/64
ipv6 address 2001:3:3:3::3/64
ipv6 address 2001:3:3:4::3/64
ipv6 address 2001:3:3:5::3/64
ipv6 address 2001:3:3:6::3/64
no keepalive
interface Serial1/0
ipv6 address 2001:B:B:B::3/64
router bgp 3
no synchronization
bgp router-id 3.3.3.3
neighbor 2001:B:B:B::1 remote-as 1
no auto-summary
address-family ipv6
neighbor 2001:B:B:B::1 activate
network 2001:3:3::/48
exit-address-family
ipv6 route 2001:3:3::/48 Null0 要发布2001:3:3::/48 ,2001:3:3::/48必须先存在路由表中,才可以发布
验证IPv6 BGP4+
可以使用显示IPv6 BGP表的show bgp ipv6命令显示信息ipv6 BGP邻居和统计信息,这个命令相当于IPV4中的show ip bgp 命令.
r2#show bgp ipv6 unicast ?
X:X:X:X::X/<0-128> IPv6 prefix <network>/<length>
community Display routes matching the communities
community-list Display routes matching the community-list
dampening Display detailed information about dampening
extcommunity-list Display routes matching the extcommunity-list
filter-list Display routes conforming to the filter-list
inconsistent-as Display only routes with inconsistent origin ASs
labels Display BGP labels for prefixes
neighbors Detailed information on TCP and BGP neighbor connections
paths Path information
peer-group Display information on peer-groups
prefix-list Display routes matching the prefix-list
quote-regexp Display routes matching the AS path "regular expression"
regexp Display routes matching the AS path regular expression
replication Display replication status of update-group(s)
rib-failure Display bgp routes that failed to install in the routing
table (RIB)
route-map Display routes matching the route-map
summary Summary of BGP neighbor status
update-group Display information on update-groups
| Output modifiers
<cr>
r2#show bgp ipv6 unicast
BGP table version is 4, local router ID is 2.2.2.2
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
*> 2001:1:1:1::/64 2001:A:A:A::1 0 0 1 i
*> 2001:2:2:2::/64 :: 0 32768 i
*> 2001:3:3::/48 2001:A:A:A::1 0 1 3 i
r2#show bgp ipv6 unicast neighbors
BGP neighbor is 2001:A:A:A::1, remote AS 1, external link
BGP version 4, remote router ID 1.1.1.1
BGP state = Established, up for 00:27:17
Last read 00:00:17, last write 00:00:17, hold time is 180, keepalive interval is 60 seconds
r2#show ipv6 route
IPv6 Routing Table - 8 entries
Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
U - Per-user Static route
I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
ON1 - OSPF NSSA ext 1, ON2 - OSPF NSSA ext 2
B 2001:1:1:1::/64 [20/0]
via FE80::CE00:3FF:FE68:0, Serial1/0
C 2001:2:2:2::/64 [0/0]
via ::, Ethernet0/0
L 2001:2:2:2::2/128 [0/0]
via ::, Ethernet0/0
B 2001:3:3::/48 [20/0]
via FE80::CE00:3FF:FE68:0, Serial1/0
C 2001:A:A:A::/64 [0/0]
via ::, Serial1/0
L 2001:A:A:A::2/128 [0/0]
via ::, Serial1/0
L FE80::/10 [0/0]
via ::, Null0
L FF00::/8 [0/0]
via ::, Null0
r2#