Juniper JUNOSE, Руководство по настройке

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Use to enable MD5 authentication on a TCP connection between two BGP peers.
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If you configure a password for a neighbor, an existing session is torn down and
a new one established.
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If you specify a BGP peer group by using the peerGroupName argument, all the
members of the peer group inherit the characteristic configured with this
command unless it is overridden for a specific peer.
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If a router has a password configured for a neighbor, but the neighbor router
does not, a message indicating this condition appears on the console while the
routers attempt to establish a BGP session between them.
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Similarly, if the two routers have different passwords configured, a message
appears on the console indicating that this condition exists.
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Use the 8 keyword to indicate that the password is encrypted (entered in
ciphertext). Use the 0 keyword to indicate that the password is unencrypted
(entered in plaintext).
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This command takes effect immediately and automatically bounces the BGP
session.
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Use the no version to disable MD5 authentication.
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See neighbor password
Setting the Maximum Size of Update Messages
You can use the neighbor maximum-update-size command to set the maximum
size of update messages transmitted to a BGP peer.
For example, to set the maximum update size to 2,000 octets:
host1(config)# router bgp 100
host1(config-router)# neighbor 10.12.2.5 maximum-update-size 2000
neighbor maximum-update-size
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Use to set the maximum size for transmitted BGP update messages.
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Set the maximum-update-size to a range: 256–4096.
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The default is 1024 octets.
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If you specify a BGP peer group by using the peerGroupName argument, all the
members of the peer group inherit the characteristic configured with this
command unless it is overridden for a specific peer.
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BGP always accepts updates of up to 4096 octets, regardless of the setting for
transmitted updated messages.
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Applies to all update messages sent after you issue the command.
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Use the no version to restore the default value.
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See neighbor maximum-update-size.
Configuring BGP Peer Groups
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Chapter 1: Configuring BGP Routing