D-Link DXS-3600-16S Manual page 168

Usage Guideline
Example
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#router bgp 65121
DXS-3600-32S(config-router)#synchronization
DXS-3600-32S(config-router)#
7-94 timers bgp
This command is used to adjust the BGP network timers. Use the no form of this command to restore to the default
value.
timers bgp KEEP-ALIVE HOLD-TIME
no timers bgp
Parameters
KEEP-ALIVE
HOLD-TIME
Default
Command Mode
Command Default Level
Usage Guideline
Example
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#router bgp 65100
DXS-3600-32S(config-router)#timers bgp 50 150
DXS-3600-32S(config-router)#
DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide
Usually, a BGP speaker does not advertise a route to an external neighbor unless
that route is local or exists in the IGP. By default, synchronization between BGP and
the IGP is turned off to allow the switch to advertise a network route without waiting
for route validation from the IGP. This feature allows routers and access servers
within an autonomous system to have the route before BGP makes it available to
other autonomous systems. Use the synchronization command if routers in the
autonomous system do not speak BGP.
You can verify your settings by entering the show ip bgp parameters command.
This example shows how to enable synchronization in AS 65121.
Specifies the frequency, in seconds, with which the software sends KEEPALIVE
messages to its BGP peer. The range is from 0 to 65535.
Specifies the interval, in seconds, after not receiving a KEEPALIVE message that the
software declares a BGP peer dead. The range is from 0 to 65535.
KEEP-ALIVE: 60 seconds
HOLD-TIME: 180 seconds
Router Configuration Mode.
Level: 8. (EI Mode Only Command)
The suggested default value for the KEEPALIVE is 1/3 of the HOLDTIME. The
timers configured for a specific neighbor or peer group (by the command neighbor
timers) override the timers configured for all BGP neighbors using the timers bgp
command.
When the minimum acceptable HOLD-TIME is configured on a BGP router, a remote
BGP peer session is established only if the remote peer is advertising a HOLD-TIME
that is equal to, or greater than, the minimum acceptable HOLD-TIME interval. If the
minimum acceptable HOLD-TIME interval is greater than the configured HOLD-
TIME, the next time the remote session tries to establish, it will fail and the local
router will send a notification stating "unacceptable hold time."
You can verify your settings by entering the show ip bgp parameters command.
This example shows how to change the KEEPALIVE timer to 50 seconds and the
HOLD-TIME timer to 150 seconds.
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