# Configuring allowed networks

Use this procedure to configure BGP allowed networks to determine the network IP addresses that BGP advertises.

The allowed addresses determine the BGP networks that originate from the Ethernet Routing Switch 5000.

## Procedure

1. In the navigation tree, open the following folders: Configuration > IP.
2. Click BGP.
3. Click the Network tab.
4. Click Insert.
5. Configure the network address, mask, and metric.
6. Click Insert.

## Network field descriptions

Use the data in the following table to use the Network tab.

Name | Description
--- | ---
NetworkAfAddr | Specifies the network prefix that BGP advertises.
NetworkAfPrefixLen | Specifies the network subnet mask.
NetworkAfMetric | Specifies the metric to use when the system sends an update for the routes in the network table. The metric configures the MED for the routes advertised to peers. The range is 0–65535.