Checking The Configuration; Configuring To Adjust The Bgp Network Convergence Speed; Establishing The Configuration Task - Huawei S6700 Series Configuration Manual

S6700 Series Ethernet Switches
Configuration Guide - IP Routing

7.11.4 Checking the Configuration

After configuring BGP community attributes, you can view the configured BGP community
attributes.
Prerequisites
The BGP community attribute configurations are complete.
Procedure
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7.12 Configuring to Adjust the BGP Network Convergence
Speed
You can adjust the BGP network convergence speed by adjusting BGP peer connection
parameters to adapt to changes on large-scale networks.

7.12.1 Establishing the Configuration Task

Before adjusting the BGP network convergence speed, familiarize yourself with the applicable
environment, complete the pre-configuration tasks, and obtain the data required for the
configuration. This will help you complete the configuration task quickly and efficiently.
Applicable Environment
BGP is used to transmit routing information on large-scale networks. Frequent network changes
affect the establishment and maintenance of BGP peer relationships, affecting the BGP network
convergence speed.
The route dampening and triggered update functions of BGP suppress frequent route changes
to a certain extent, but cannot minimize the impact of network flapping on BGP connections.
You can configure BGP timers, disabling rapid EBGP connection reset, and enable BGP tracking
to suppress BGP network flapping and speed up BGP network convergence.
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Issue 01 (2012-03-15)
Run the display bgp routing-table network [ mask | mask-length ] command to check the
detailed information about BGP routes.
Run the display bgp routing-table community [ community-number | aa:nn ] &<1-29>
[ internet | no-advertise | no-export | no-export-subconfed ]
to check information about the routes carrying specified BGP community attributes.
ConnectRetry timer
A ConnectRetry timer is used to set an interval between BGP attempts to initiate TCP
connections. After BGP initiates a TCP connection, the ConnectRetry timer will be stopped
if the TCP connection is established successfully. If the first attempt to establish a TCP
connection fails, BGP tries again to establish the TCP connection after the ConnectRetry
timer expires.
You can accelerate or slow down the establishment of BGP peer relationships by changing
the BGP ConnectRetry interval. For example, if the ConnectRetry interval is reduced, BGP
will wait less time before retrying to establish a TCP connection when the previous attempt
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7 BGP Configuration
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[ whole-match ] command
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