Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 203
Next Hop, Multiprotocol BGP, Implementing BGP with FTOS, Additional Path (Add-Path) support
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0x7128114 0 0x536a914 0 0x2ffe884 0 10 18508 209 3356 13845 i 3 18508 209 701 6347 7781 i 1 18508 701 3561 9116 21350 i Next Hop The Next Hop is the IP address used to reach the advertising router. For EBGP neighbors, the Next-Hop address is the IP address of the connection between the neighbors. For IBGP, the EBGP Next-Hop address is carried into the local AS. A Next Hop attribute is set when a BGP speaker advertises itself to another BGP speaker outside its local AS. It can also be set when advertising routes within an AS. The Next Hop attribute also serves as a way to direct traffic to another BGP speaker, rather than waiting for a speaker to advertise. FTOS allows you to set the Next Hop attribute in the CLI. Setting the Next Hop attribute lets you determine a router as the next hop for a BGP neighbor. Multiprotocol BGP e c MBGP for IPv6 unicast is supported on platforms c e s MBGP for IPv4 Multicast is supported on platform Multiprotocol Extensions for BGP (MBGP) is defined in IETF RFC 2858. MBGP allows different types of address families to be distributed in parallel. This allows information about the topology of IP Multicast-capable routers to be exchanged separately from the topology of normal IPv4 and IPv6 unicast routers. It allows a multicast routing topology different from the unicast routing topology. Note: It is possible to configure BGP peers that exchange both unicast and multicast network layer reachability information (NLRI), but you cannot connect Multiprotocol BGP with BGP. Therefor, You cannot redistribute Multiprotocol BGP routes into BGP. Implementing BGP with FTOS Additional Path (Add-Path) support The Add-path feature reduces convergence times by advertising multiple paths to its peers for the same address prefix without replacing existing paths with new ones. By default, a BGP speaker advertises only the best path to its peers for a given address prefix. If the best path becomes unavailable, the BGP speaker withdraws its path from its local RIB and recalculates a new best path. This requires both IGP and BGP convergence and can therefore be a lengthy process. Border Gateway Protocol IPv4 (BGPv4) | 203
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