Dell N3200-ON Networking N-Series Switches User Guide version 6.8.0 - Page 1356

Table 38-1. BGP-Related Terms Term RTO TCP Definition Routing Table Object. The common routing table, or "RIB," which collects routes from all sources (local, static, dynamic) and determines the most preferred route to each destination. Transmission Control Protocol Overview BGP operates by establishing adjacencies (connections) with other BGP peers (routers). BGP peers are configured manually. A BGP speaker (peer) sends a keep-alive message every 30 seconds to the BGP peer to maintain the connections. BGP uses TCP as its transport protocol. BGP speakers distribute routing information via Network Layer Reachability Information (NLRI) Updates. Normally, Dell Networking BGP distributes routes learned from interior sources only to exterior peers and distributes routes learned from exterior sources to all peers. Dell Networking BGP supports filtering of learned routes using route-maps for both the in and out directions. Dell Networking BGP supports IPv4 and IPv6 unicast routes only. Both IPv4 and IPv6 peering are supported. IPv4 routes may be carried over IPv4 peering sessions. IPv6 routes may be carried over IPv4 or IPv6 peering sessions. The only optional parameters recognized in an OPEN message are the Capabilities option (RFC 5492) and the multiprotocol capabilities option (RFC 4760). The RFC 4271 deprecated Authentication Information option is not supported. If a neighbor includes the deprecated authentication parameter in its OPEN message, Dell Networking BGP rejects the OPEN and will not form an adjacency. Dell Networking BGP allows the network operator to configure a maximum number of prefixes accepted from a peer. The limit defaults to the maximum number of routes that can be installed in the routing table. When the limit is reached, by default, BGP shuts down the peer. BGP may be configured to instead discard new address prefixes but not terminate the peer (RFC 4271 section 6.7). 1356 BGP