Specifying A List Of Networks To Advertise - Foundry Networks Switch and Router Installation And Configuration Manual

Foundry Switch and Router Installation and Configuration Guide
5. Edit the number in the # of Paths field if needed. You can specify from 1 – 4 paths. The default is 1. You
cannot set the maximum number of BGP4 paths to a number higher than the IP load sharing maximum
number of paths.
6. Click the Apply button to apply the changes to the device's running-config file.
7. Select the Save link at the bottom of the dialog, then select Yes when prompted to save the configuration
change to the startup-config file on the device's flash memory.

Specifying a List of Networks to Advertise

By default, the router sends BGP4 routes only for the networks you identify using the network command or that
are redistributed into BGP4 from RIP or OSPF. You can specify up to 600 networks.
To specify a network to be advertised, use either of the following methods.
NOTE: The exact route must exist in the IP route table before the Layer 3 Switch can create a local BGP route.
USING THE CLI
To configure the Layer 3 Switch to advertise network 209.157.22.0/24, enter the following command:
BigIron(config-bgp-router)# network 209.157.22.0 255.255.255.0
Syntax: network <ip-addr> <ip-mask> [route-map <map-name>] | [weight <num>] | [backdoor]
The <ip-addr> is the network number and the <ip-mask> specifies the network mask.
The route-map <map-name> parameter specifies the name of the route map you want to use to set or change
BGP4 attributes for the network you are advertising. The route map must already be configured.
The weight <num> parameter specifies a weight to be added to routes to this network.
The backdoor parameter changes the administrative distance of the route to this network from the EBGP
administrative distance (20 by default) to the Local BGP weight (200 by default), thus tagging the route as a
backdoor route. Use this parameter when you want the router to prefer IGP routes such as RIP or OSPF routes
over the EBGP route for the network.
USING THE WEB MANAGEMENT INTERFACE
1. Log on to the device using a valid user name and password for read-write access. The System configuration
panel is displayed.
2. Click on the plus sign next to Configure in the tree view to expand the list of configuration options.
3. Click on the plus sign next to BGP in the tree view to expand the list of BGP option links.
4. Click on the Network link.
• If the device does not have any BGP networks configured, the BGP Network configuration panel is
displayed, as shown in the following example.
• If a BGP network is already configured and you are adding a new one, click on the Add Network link to
display the BGP Network configuration panel, as shown in the following example.
• If you are modifying an existing BGP network, click on the Modify button to the right of the row describing
the network to display the BGP Network configuration panel, as shown in the following example.
19 - 30 December 2000