D-Link DGS-3630 Emulator 1 - Page 221
neighbor as-override, MI and EI Mode Only
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DGS-3630 Layer 3 Stackable Managed Switch CLI Reference Guide Example This example shows how to set the AS origination interval of 15.1.1.52 to 100. Switch# configure terminal Switch(config)# router bgp 65100 Switch(config-router)# neighbor 15.1.1.52 as-origination-interval 100 Switch(config-router)# 13-47 neighbor as-override (MI and EI Mode Only) This command is used to enable to override the AS number of a site with the provider's AS number on a PE router. Use the no form of this command to disable this function. neighbor {IP-ADDRESS | PEER-GROUP-NAME} as-override no neighbor {IP-ADDRESS | PEER-GROUP-NAME} as-override Parameters IP-ADDRESS PEER-GROUP-NAME Specifies the IP address of the neighboring peer. Specifies the name of the BGP peer group. Default By default, this option is disabled. Command Mode Address Family Configuration Mode (VRF). Command Default Level Level: 12. Usage Guideline The command is used to prevent routing loops between routers within a VPN. In the VPN, the most typical application lies in that the two CE ends have the same AS number. Normally, these two CE routers can't receive the other from the other party, because the BGP protocol will not receive the route information with the same AS number in AS path attribute as the AS of BGP instance itself. After the above command is configured on the PE router, you can let the PE replace the AS number of the CE to AS number of PE self, so that the CE from the other end can receive the route information. Only set this function for the EBGP peer. Example This example shows how to enable the AS override flag of BGP peer 3.3.3.3 in VRF "vpn1". Switch# configure terminal Switch(config)# router bgp 10 Switch(config-router)# address-family ipv4 vrf vpn1 Switch(config-router-af)# neighbor 3.3.3.3 remote-as 20 Switch(config-router-af)# neighbor 3.3.3.3 as-override Switch(config-router-af)# 216
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