Brocade Virtual ADX Switch and Router Guide (Supporting ADX v03.1.00) - Manual (Page 136)

122 Brocade Virtual ADX Switch and Router Guide
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Configuring OSPF
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• The bandwidth for tunnel interfaces is 9 Kbps and is not affected by the auto-cost feature.
Changing the reference bandwidth
To change reference bandwidth, use the following CLI method.
To change the reference bandwidth, enter a command such as the following at the OSPF
configuration level of the CLI.
Virtual ADX(config-ospf-router)# auto-cost reference-bandwidth 500
The reference bandwidth specified in this example results in the following costs:
• 10 Mbps port’s cost = 500/10 = 50
• 100 Mbps port’s cost = 500/100 = 5
• 1000 Mbps port’s cost = 500/1000 = 0.5, which is rounded up to 1
• 155 Mbps port’s cost = 500/155 = 3.23, which is rounded up to 4
• 622 Mbps port’s cost = 500/622 = 0.80, which is rounded up to 1
• 2488 Mbps port’s cost = 500/2488 = 0.20, which is rounded up to 1
The costs for 10 Mbps, 100 Mbps, and 155 Mbps ports change as a result of the changed
reference bandwidth. Costs for higher-speed interfaces remain the same.
Syntax: [no] auto-cost reference-bandwidth num
The num parameter specifies the reference bandwidth and can be a value from 1 – 4294967. The
default is 100, which results in the same costs as previous software releases.
To restore the reference bandwidth to its default value and thus restore the default costs of
interfaces to their default values, enter the following command.
Virtual ADX(config-ospf-router)# no auto-cost reference-bandwidth
Define redistribution filters
Route redistribution imports and translates different protocol routes into a specified protocol type.
On Brocade routers, redistribution is supported for static routes and OSPF. Likewise, OSPF
redistribution supports the import of static, routes into OSPF routes.
To configure for redistribution, define the redistribution tables with deny and permit redistribution
filters.
• If you are using the CLI, use the deny and permit redistribute commands for OSPF at the OSPF
router level.
• If you are using the Web management interface, click on the plus sign next to Configure in the
tree view, click on the plus sign next to OSPF, then select the Redistribution Filter link from the
OSPF configuration sheet.
NOTE
Do not enable redistribution until you have configured the redistribution filters. If you enable
redistribution before you configure the redistribution filters, the filters will not take affect and all
routes will be distributed.