Bgp Route; Routing Information Base; Table 4: Cease Notification Message Subcodes - Juniper JUNOSE SOFTWARE FOR E SERIES 11.0.X - BGP AND MPLS CONFIGURATION GUIDE 2009-12-30 Configuration Manual

JUNOSe 11.0.x BGP and MPLS Configuration Guide

Table 4: Cease Notification Message Subcodes

BGP Route

A BGP route consists of two parts, a prefix and a set of path attributes. It is not
uncommon to use the term path to refer to a BGP route, although that term technically
refers to one of the path attributes of that route.

Routing Information Base

BGP routes are stored in a BGP speaker's routing information base (RIB), also known
as its routing table, which conceptually consists of the following three parts:
8
Overview
If the session is being terminated for a nonfatal error, the notification messages
includes the error code cease. Subcodes sent in the notification message can
inform network operators about peering problems and help them better
understand network events. Table 4 on page 8 lists the subcodes defined for
BGP notification messages bearing the cease code.
Subcode Reason
1 The number of address prefixes received
from the peer has exceeded the upper
bound configured with the neighbor
maximum-prefix command. The
notification message can include address
family and upper bound information in
the data field.
2 The BGP speaker is administratively
shutting down the session.
3 The BGP speaker is removing the peer
configuration.
4 The BGP speaker is administratively
resetting the session.
5 The BGP speaker is rejecting the
connection (for example, because the
peer is not configured locally on the
speaker) after accepting a transport
protocol connection.
6 The BGP speaker is administratively
resetting the session for some other
configuration.
Route-refresh messages BGP speakers can send route-refresh messages to peers
that advertise the route-refresh capability. The messages contain a request for
the peer to resend its routes to the router. This feature enables the BGP speaker
to apply modified or new policies to the routes when it receives them again.
Symbolic Name
Maximum Number of Prefixes Reached
Administratively Shutdown
Peer Unconfigured
Administratively Reset
Connection Rejected
Other Configuration Change