Juniper BGP, Руководство по настройке

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Use the no version to restore the default values on the specified neighbor or peer
group—30 seconds for the keepalive timer and 90 seconds for the hold-time
timer.
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See neighbor timers.
timers bgp
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Use to set the keepalive and hold-time timers for all neighbors.
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If you set the keepalive timer to 0, BGP does not send any keepalive messages.
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If you do not expect the peer to send any keepalives, set the hold-time timer
to 0.
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Example
host1(config-router)# timers bgp 75 300
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The new timer values are used by every session that comes up after you issue
the command; timers configured specifically for the sessions take precedence
over these values.
To force sessions that are already established to use the new timer values, you
must use the
clear ip bgp command to perform a hard clear.
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Use the no version to restore the default values on all neighbors—30 seconds
for the keepalive timer and 90 seconds for the hold-time timer.
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See timers bgp.
Automatic Summarization of Routes
By default, all routes redistributed into BGP from an IGP are automatically summarized
to their natural network masks.
auto-summary
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Use to reenable automatic summarization of routes redistributed into BGP.
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Automatic summarization is enabled by default. However, creating an address
family for a VRF automatically disables automatic summarization for that address
family.
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This command takes effect immediately.
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Use the no version to disable automatic summarization of redistributed routes.
■
See auto-summary.
Administrative Shutdown
You can administratively shut down particular BGP neighbors or peer groups without
removing their configuration from BGP by using the
neighbor shutdown command.
You can also administratively shut down BGP globally by using the bgp shutdown
command.
Configuring BGP Peer Groups
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Chapter 1: Configuring BGP Routing