Zte ZXR10 5900E series Configuration Manual page 20

ZXR10 5900E Series Configuration Guide (VPN)
Caution!
Before perform the following configurations, make sure that PE1 and PE2 can be ping
each other by using their loopback addresses.
PE1 configuration,
PE1(config)#router bgp 100
PE1(config-bgp)#neighbor 1.1.1.3 remote-as 100
PE1(config-bgp)#neighbor 1.1.1.3 activate
PE1(config-bgp)#neighbor 1.1.1.3 update-source loopback1
PE1(config-bgp)#address-family vpnv4
PE1(config-bgp-af-vpnv4)#neighbor 1.1.1.3 activate
PE1(config-bgp-af-vpnv4)#exit
PE2 configuration,
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 vpnv4
PE2(config-bgp-af-vpnv4)#neighbor 1.1.1.1 activate
PE2(config-bgp-af-vpnv4)#exit
MPLS VPN Advanced Function Configuration
1. Configuring AS Override
When BGP runs between PE and CE, users want to reuse AS number in different sites.
To provide the connective between CE1 and CE2, a new method called AS override
is adopted. After AS override is configured on PE, but before PE sends route update
packets to CE, PE will replace the AS number of each directly connectd CE device in
the entity AS_PATH by its own AS number. The length of AS_PATH is still kept when
AS override is configured.
To configure AS override, perform the following steps on ZXR10 5900E.
Step
1
2
SJ-20150114102049-016|2015-03-10 (R1.0)
Command
router bgp <as-number>
ZXR10(config)#
address-family ipv4 vrf < vrf-name>
ZXR10(config-bgp)#
1-14
ZTE Proprietary and Confidential
Function
This enters BGP route
configuration mode.
This enters IPv4 VRF address
family configuration mode.