Users Guide

1360 BGP
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 EMC Networking BGP
distributes routes learned from interior sources only to exterior peers and
distributes routes learned from exterior sources to all peers.
Dell EMC Networking BGP supports filtering of learned routes using route-
maps for both the in and out directions.
Dell EMC 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 EMC Networking BGP rejects the
OPEN and will not form an adjacency.
Dell EMC 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).
RTO 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.
TCP Transmission Control Protocol
Table 38-1. BGP-Related Terms
Term Definition