Changing Administrative Distances - Foundry Networks Switch and Router Installation And Configuration Manual

BigIron(config-bgp-router)# default-information-originate
Syntax: [no] default-information-originate
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. Select Disable or Enable next to Default Information Originate.
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. Select Yes when prompted to save the configuration change
to the startup-config file on the device's flash memory.
Changing the Default MED (Metric) Used for Route Redistribution
The Foundry Layer 3 Switch can redistribute RIP and OSPF routes into BGP4. The MED (metric) is a global
parameter that specifies the cost that will be applied to all routes by default when they are redistributed into BGP4.
When routes are selected, lower metric values are preferred over higher metric values. The default BGP4 MED
value is 0 and can be assigned a value from 0 – 4294967295.
NOTE: RIP and OSPF also have default metric parameters. The parameters are set independently for each
protocol and have different ranges.
USING THE CLI
To change the default metric to 40, enter the following command:
BigIron(config-bgp-router)# default-metric 40
Syntax: default-metric <num>
The <num> indicates the metric and can be a value from 0 – 4294967295.
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. Change the number in the Default Metric field. You can enter a number from 0 – 4294967295.
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. Select Yes when prompted to save the configuration change
to the startup-config file on the device's flash memory.

Changing Administrative Distances

BGP4 routers can learn about networks from various protocols, including the EBGP portion of BGP4 and IGPs
such as OSPF and RIP. Consequently, the routes to a network may differ depending on the protocol from which
the routes were learned.
To select one route over another based on the source of the route information, the Layer 3 Switch can use the
administrative distances assigned to the sources. The administrative distance is a protocol-independent metric
that IP routers use to compare routes from different sources.
December 2000
Configuring BGP4
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