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Configuring BGP4
December 2000
19 - 47
The
match internal | external1 | external2
parameter applies only to OSPF. This parameter specifies the types
of OSPF routes to be redistributed into BGP4.
USING THE WEB MANAGEMENT INTERFACE
Use the procedure in “Redistributing RIP Routes” on page 19-45.
Redistributing Static Routes
To configure the Layer 3 Switch to redistribute static routes, enter the following command:
BigIron(config-bgp-router)# redistribute static
Syntax:
redistribute static [metric <num>] [route-map <map-name>] [weight <num>]
The
static
parameter indicates that you are redistributing static routes into BGP4.
The
metric
<num> parameter changes the metric. You can specify a value from 0 – 4294967295. The default
is 0.
The
route-map
<map-name> parameter specifies a route map to be consulted before adding the filter to the IP
route table.
NOTE:
The route map you specify must already be configured on the router. See “Defining Route Maps” on
page 19-63 for information about defining route maps.
The
weight
<num> parameter changes the weight. You can specify a value from 0 – 65535. The default is 0.
USING THE WEB MANAGEMENT INTERFACE
Use the procedure in “Redistributing RIP Routes” on page 19-45.
Disabling or Re-Enabling Re-Advertisement of All Learned BGP4 Routes to All BGP4 Neighbors
By default, the Layer 3 Switch re-advertises all learned best BGP4 routes to BGP4 neighbors, unless the routes
are discarded or blocked by route maps or other filters.
If you want to prevent the Layer 3 Switch from re-advertising a learned best BGP4 route unless that route also is
installed in the IP route table, use the following CLI method.
USING THE CLI
To disable re-advertisement of BGP4 routes to BGP4 neighbors except for routes that the software also installs in
the route table, enter the following command:
BigIron(config-bgp-router)# no readvertise
Syntax:
[no] readvertise
To re-enable re-advertisement, enter the following command:
BigIron(config-bgp-router)# readvertise
USING THE WEB MANAGEMENT INTERFACE
You cannot configure this parameter using the Web management interface.
Redistributing IBGP Routes into RIP and OSPF
By default, the Layer 3 Switch does not redistribute IBGP routes from BGP4 into RIP or OSPF. This behavior
helps eliminate routing loops. However, if your network can benefit from redistributing the IBGP routes from BGP4
into OSPF or RIP, you can enable the Layer 3 Switch to redistribute the routes. To do so, use the following CLI
method.
USING THE CLI
To enable the Layer 3 Switch to redistribute BGP4 routes from BGP4 into OSPF and RIP, enter the following
command:
BigIron(config-bgp-router)# bgp-redistribute-internal
Summary of Contents for Switch and Router
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