Foundry Networks Switch and Router, Installation And Configuration Manual, Page: 724 / 1070

Foundry Switch and Router Installation and Configuration Guide
19 - 42 December 2000
USING THE CLI
To configure four Layer 3 Switches to be a member of confederation 10, consisting of two sub-ASs (64512 and
64513), enter commands such as the following.
Commands for Router A
BigIronA(config)# router bgp
BigIronA(config-bgp-router)# local-as 64512
BigIronA(config-bgp-router)# confederation identifier 10
BigIronA(config-bgp-router)# confederation peers 64512 64513
BigIronA(config-bgp-router)# write memory
Syntax: local-as <num>
The <num> parameter with the local-as command indicates the AS number for the BGP routers within the sub-
AS. You can specify a number from 1 – 65535. Foundry recommends that you use a number within the range of
well-known private ASs, 64512 – 65535.
Syntax: confederation identifier <num>
The <num> parameter with the confederation identifier command indicates the confederation number. The
confederation ID is the AS number by which BGP routers outside the confederation know the confederation.
Thus, a BGP router outside the confederation is not aware and does not care that your BGP routers are in multiple
sub-ASs. BGP routers use the confederation ID when communicating with routers outside the confederation. The
confederation ID must be different from the sub-AS numbers. You can specify a number from 1 – 65535.
Syntax: confederation peers <num> [<num> …]
The <num> parameter with the confederation peers command indicates the sub-AS numbers for the sub-ASs in
the confederation. You must specify all the sub-ASs contained in the confederation. All the routers within the
same sub-AS use IBGP to exchange router information. Routers in different sub-ASs within the confederation use
EBGP to exchange router information. You can specify a number from 1 – 65535.
Commands for Router B
BigIronB(config)# router bgp
BigIronB(config-bgp-router)# local-as 64512
BigIronB(config-bgp-router)# confederation identifier 10
BigIronB(config-bgp-router)# confederation peers 64512 64513
BigIronB(config-bgp-router)# write memory
Commands for Router C
BigIronC(config)# router bgp
BigIronC(config-bgp-router)# local-as 64513
BigIronC(config-bgp-router)# confederation identifier 10
BigIronC(config-bgp-router)# confederation peers 64512 64513
BigIronC(config-bgp-router)# write memory
Commands for Router D
BigIronD(config)# router bgp
BigIronD(config-bgp-router)# local-as 64513
BigIronD(config-bgp-router)# confederation identifier 10
BigIronD(config-bgp-router)# confederation peers 64512 64513
BigIronD(config-bgp-router)# write memory
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 General link to display the BGP configuration panel, shown in Figure 19.2 on page 19-8.
5. Enter the confederation ID in the Confederation ID field. The confederation ID must be different from the sub-
AS numbers. You can specify a number from 1 – 65535.