DXS-3600 Series 10GbE Layer 2/3 Switch CLI Reference Guide
160
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
Usage Guideline
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.
Example
This example shows how to enable synchronization in AS 65121.
DXS-3600-32S#configure terminal
DXS-3600-32S(config)#router bgp 65121
DXS-3600-32S(config-router)#synchronization
DXS-3600-32S(config-router)#
KEEP-ALIVE
Specifies the frequency, in seconds, with which the software sends KEEPALIVE
messages to its BGP peer. The range is from 0 to 65535.
HOLD-TIME
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.
Default
KEEP-ALIVE
: 60 seconds
HOLD-TIME
: 180 seconds
Command Mode
Router Configuration Mode.
Command Default Level
Level: 8. (
EI Mode Only Command
)
Usage Guideline
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.
Example
This example shows how to change the KEEPALIVE timer to 50 seconds and the
HOLD-TIME timer to 150 seconds.
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)#
Содержание DXS-3600-16S
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