Step 1 |
enable
Example:
|
Enables
privileged EXEC mode.
|
Step 2 |
configure
terminal
Example:
Device# configure terminal
|
Enters global
configuration mode.
|
Step 3 |
router
bgp
autonomous-system-number
Example:
Device(config)# router bgp 65000
|
Enters router
configuration mode for the specified routing process.
|
Step 4 |
neighbor
{ip-address |
ipv6-address[%] |
peer-group-name}
remote-as
autonomous-system-number [alternate-as
autonomous-system-number ...]
Example:
Device(config-router)# neighbor FE80::1234:BFF:FE0E:A471% remote-as 64600
|
Adds the
link-local IPv6 address of the neighbor in the specified remote autonomous
system to the IPv6 multiprotocol BGP neighbor table of the local router.
|
Step 5 |
neighbor
{ip-address |
ipv6-address[%] |
peer-group-name}
update-source
interface-type
interface-number
Example:
Device(config-router)# neighbor FE80::1234:BFF:FE0E:A471% update-source gigabitethernet0/0/0
|
Specifies the
link-local address over which the peering is to occur.
-
The
optional
% keyword is
the IPv6 link-local address identifier. This keyword needs to be added whenever
a link-local IPv6 address is used outside the context of its interface.
-
If there
are multiple connections to the neighbor and you do not specify the neighbor
interface by using the
interface-type and
interface-numberarguments in the
neighbor
update-source command, a TCP connection cannot be
established with the neighbor using link-local addresses.
|
Step 6 |
address-family
ipv6
[vrf
vrf-name]
[unicast |
multicast |
vpnv6
Example:
Device(config-router)# address-family ipv6
|
Specifies the
IPv6 address family, and enters address family configuration mode.
-
The
unicast
keyword specifies the IPv6 unicast address family. By default, the router is
placed in configuration mode for the IPv6 unicast address family if the
unicast
keyword is not specified with the
address-family
ipv6 command.
-
The
multicast
keyword specifies IPv6 multicast address prefixes.
|
Step 7 |
neighbor
{ip-address |
peer-group-name |
ipv6-address
%}
activate
Example:
Device(config-router-af)# neighbor FE80::1234:BFF:FE0E:A471% activate
|
Enables the
neighbor to exchange prefixes for the IPv6 address family with the local router
using the specified link-local addresses.
|
Step 8 |
neighbor
{ip-address |
peer-group-name |
ipv6-address[%]}
route-map
map-name
{in |
out
Example:
Device(config-router-af)# neighbor FE80::1234:BFF:FE0E:A471% route-map nh6 out
|
Applies a
route map to incoming or outgoing routes.
|
Step 9 |
exit
Example:
Device(config-router-af)# exit
|
Exits address
family configuration mode, and returns the device to router configuration mode.
|
Step 10 | Repeat Step
9.
Example:
Device(config-router)# exit
|
Exits router
configuration mode, and returns the device to global configuration mode.
|
Step 11 |
route-map
map-tag
[permit |
deny] [sequence-number]
Example:
Device(config)# route-map nh6 permit 10
|
Defines a
route map and enters route-map configuration mode.
|
Step 12 |
match
ipv6
address
{prefix-list
prefix-list-name |
access-list-name
Example:
Device(config-route-map)# match ipv6 address prefix-list cisco
|
Distributes
any routes that have a destination IPv6 network number address permitted by a
prefix list, or performs policy routing on packets.
|
Step 13 |
set
ipv6
next-hop
ipv6-address
[link-local-address] [peer-address
Example:
Device(config-route-map)# set ipv6 next-hop 2001:DB8::1
|
Overrides the
next hop advertised to the peer for IPv6 packets that pass a match clause of a
route map for policy routing.
-
The
ipv6-address
argument specifies the IPv6 global address of the next hop. It need not be an
adjacent router.
-
The
link-local-addressargument specifies the IPv6
link-local address of the next hop. It must be an adjacent router.
Note
|
The route
map sets the IPv6 next-hop addresses (global and link-local) in BGP updates. If
the route map is not configured, the next-hop address in the BGP updates
defaults to the unspecified IPv6 address (::), which is rejected by the peer.
If you specify only the global IPv6 next-hop address (the
ipv6-address
argument) with the
set
ipv6
next-hopcommand after specifying the neighbor
interface (the
interface-type argument) with the
neighbor
update-source command in Step 5, the link-local
address of the interface specified with the
interface-type argument is included as the
next-hop in the BGP updates. Therefore, only one route map that sets the global
IPv6 next-hop address in BGP updates is required for multiple BGP peers that
use link-local addresses.
|
|