ZXR10 ZSR V2 Configuration Guide (IPv6)
Configuration on PE2:
PE2(config)#router bgp 100
PE2(config-bgp)#neighbor 1.1.1.1 remote-as 100
PE2(config-bgp)#neighbor 1.1.1.1 activate
PE2(config-bgp)#neighbor 1.1.1.1 update-source loopback1
PE2(config-bgp)#address-family vpnv6
PE2(config-bgp-af-vpnv6)#neighbor 1.1.1.1 activate
PE2(config-bgp-af-vpnv6)#exit
8.
Configure AS overriding.
When BGP runs between PEs and CEs, sometimes different nodes need to reuse the
AS number. To ensure the connectivity between CE1 and CE2, AS overriding can be
performed. When AS overriding is configured on a PE, before the PE sends a route
update to CEs, the PE replaces the AS number of the CEs connected directly along
the AS_PATH with the AS number of it own. The length of AS_PATH does not change.
Step
Command
Function
1
ZXR10(config)#
router bgp
<
as-number
>
Enters BGP route
configuration mode.
2
ZXR10(config-bgp)#
address-family ipv6 vrf
<
vrf-name
>
Enters IPv6 VRF address
family configuration mode.
3
ZXR10(config-bgp-af-ipv6-vrf)#
neighbor
<
neighbor-address
>
as-override
Replaces the AS number of
the CEs connected directly
along the AS_PATH with the
AS number of it own.
9.
Configure export map and import map.
The export map and import map are described below.
l
Import Map: Users can filter the routes imported to the VRF according to the
import map. The VRF can store the route prefixes that it cares.
l
Export Map: Users can configure different Route Targets (
s) for route prefixes
by using the export map.
Different VRFs can select to accept prefixes with
different RTs.
Step
Command
Function
1
ZXR10(config)#
ip vrf
<
vrf-name
>
Configures a VPN instance
and enters VPN instance
configuration mode.
2
ZXR10(config-vrf-vrf-name)#
address-family ipv6
Activates IPv6 address family.
19-10
SJ-20140504150128-018|2014-05-10 (R1.0)
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