3Com 7757 Configuration Manual page 364

364 C 36: BGP C
HAPTER ONFIGURATION
Adjusting and
Optimizing a BGP
Network
c
Value of BGP timer
■
Interval for sending the update packets
■
MD5 authentication password
■
Table 300 Adjust and optimize a BGP network
Operation
Enter system view
Enable BGP, and enter BGP view
Configure BGP Configure the
timer Keepalive time
and Holdtime of
BGP.
Configure the
Keepalive time
and holdtime of
a specified
peer/peer
group.
Configure the interval at which a
peer group sends the same route
update packet
Configure the number of route
prefixes to be received from the
BGP peer/peer group
Perform soft refreshment of BGP
connection manually
Configure BGP to perform MD5
authentication when establishing
TCP connection
Configure the number of routes
used for BGP load balance
CAUTION:
The reasonable maximum interval for sending Keepalive message is one third
■
of the Holdtime, and the interval cannot be less than 1 second, therefore, if the
Holdtime is not 0, it must be 3 seconds at least.
Command
system-view
bgp as-number
timer keepalive
keepalive-interval hold
holdtime-interval
peer { group-name |
ip-address } timer
keepalive
keepalive-interval hold
holdtime-interval
peer group-name
route-update-interval
seconds
peer { group-name |
ip-address } route-limit
prefix-number
[ [ alert-only |
reconnect
reconnect-time ] |
percentage-value ] *
return
refresh bgp { all |
ip-address | group
group-name } { export |
import }
system-view
bgp as-number
peer { group-name |
ip-address }
password { cipher |
simple } password
balance num
Description
-
Required
By default, BGP is disabled.
Optional
By default, the keepalive time
is 60 seconds, and holdtime is
180 seconds. The priority of
the timer configured by the
timer command is lower than
that of the timer configured by
the peer time command.
Optional
By default, the interval at
which a peer group sends the
same route update packet to
IBGP peers is 15 seconds, and
to EBGP peers is 30 seconds.
Optional
By default, there is no limit on
the number of route prefixes
to be received from the BGP
peer/peer group.
-
Optional
Enter BGP view again
Optional
By default, BGP dose not
perform MD5 authentication
when establishing TCP
connection.
Optional
By default, the system does
not adopt BGP load balance.