• Author : Prashanth Rajendran

 
 

BGP Same Address Peering

Description This feature adds support for BGP peering with multiple peers using the same IP address. The router id of those peers is used in conjunction with IP address to disambiguate them. Hence it is expected that router id of the bgp instances in play should be unique. Platform compatibility This feature is available on all platforms in multi-agent mode in 4.25.2F. Configuration The option “peer-id include router-id” is added in the listen range configuration to enable same address peering. router bgp 1 bgp listen range 1.0.0.0/24 peer-id include router-id peer-group pg1 remote-as 100 router bgp 1 bgp listen range...
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BGP IPv6 Link Local Peers Discovery

Description This feature adds support for a dynamic configuration model to eliminate the need for the network administrator to assign and configure IPv6 addresses for BGP peering. We leverage the following details to automatically establish BGP adjacency: IPv6 link local addresses can be, and typically are, automatically generated by the system based on MAC addresses. IPv6 router advertisements can be used to communicate these addresses among potential BGP peers. Since this feature uses IPv6 router advertisement to discover the peer’s IPv6 link local address, devices are required to have IPv6 routing enabled, and the interface used for peering should have...
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BGP IPv6 link-local peering support

Introduction This feature adds support for BGP peering over IPv6 link-local addresses. This feature is available with the with the ribd routing protocol model since EOS-4.20.5 and multi-agent routing protocol model since EOS-4.22.1. As defined in RFC 4007, IPv6 addresses have multiple possible scopes. The prefix range fe80::/10 is reserved for uniquely identifying interfaces on a single link, or of link-local scope. Previous EOS versions supported BGP sessions with IPv4 or IPv6 peer addresses, as in: router bgp 64496 router-id 0.0.1.1 neighbor 192.0.2.1 remote-as 64497 neighbor 192.0.2.1 maximum-routes 12000 ! However, attempting to peer using the designated IPv6 link-local address...
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