2.4.5 (Optional) Configuring Timers for a Remote LDP Session
A remote LDP session uses the following timers: target Hello send timer, target Hello hold timer,
Keepalive send timer, Keepalive hold timer, and Exponential backoff timer.
Context
Table 2-2 lists timers that a remote LDP session uses.
Table 2-2 Timers that a remote LDP session uses
Timer Description Usage
Target Hello
send timer
Sends Hello messages
periodically to notify a peer LSR
of the local LSR's presence and
establish a Hello adjacency.
Similar to a remote LDP session,
a local LDP session uses a link
Hello send timer.
On an unstable network, decrease the
value of a target Hello send timer,
speeding up network fault detection.
Target Hello
hold timer
Exchanges Hello messages
periodically between two LDP
peers to maintain a Hello
adjacency. If no Hello message is
received after the target Hello
hold timer expires, the Hello
adjacency is torn down. Similar
to a remote LDP session, a local
LDP session uses a link Hello
hold timer.
On a network with unstable links or a
large number of packets, increase the
value of a target Hello hold timer,
preventing frequent disconnection and
setup of a remote LDP session.
Keepalive send
timer
Sends Keepalive messages
periodically, maintaining the
remote LDP session.
On an unstable network, set a smaller
value for a Keepalive send timer,
speeding up network fault detection.
Keepalive hold
timer
Sends LDP PDUs over an LDP
session to maintain the remote
LDP session. If no LDP PDU is
received after the Keepalive hold
timer expires, the TCP
connection is closed and the
remote LDP session is
terminated.
On a network with unstable links,
increase the value of a Keepalive hold
timer, preventing a remote LDP
session from flapping.
Huawei AR1200 Series Enterprise Routers
Configuration Guide - MPLS 2 MPLS LDP Configuration
Issue 01 (2011-12-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
33
To Next Page
Loading...
