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Nokia Network Voyager for IPSO 4.0 Reference Guide 419
3. Follow the steps described in the “To configure route inbound policy on Nokia Platform D
based on an autonomous system number” example.
4. Enter the community ID or the name of one of the special attributes in the Community ID/
Special community text box, then click Apply.
5. Click on button in the Redistribute All Routes field or enter specific IP prefixes to
redistribute as described in the “To configure route inbound policy on Nokia Platform D
based on an autonomous system number” example, then click Apply.
BGP Multi Exit Discriminator Example
Multi Exit Discriminator (MED) values are used to help external neighbors decide which of the
available entry points into an AS is preferred. A lower MED value is preferred over a higher
MED value.
In the above diagram, MED values are being propagated with BGP updates. This diagram shows
four different configurations.
To configure Default MED for Nokia Platform D
To configure MED Values for all peers of AS200
To configure MED Values for each external BGP peer for Nokia Platform D
To configure MED Values and a route redistribution policy on Nokia Platform D
To configure Default MED for Nokia Platform D
1. Click BGP under Configuration > Routing Configuration in the tree view.
2. Configure EBGP peers in AS100 and AS200 according to the “BGP Neighbors Example.”
3. Click the Advanced BGP Options link on the main BGP page.
This action takes you to the Advanced Options for BGP page.
4. In the Miscellaneous settings field, enter a MED value in the Default MED edit box; then
click Apply.
5. Click Save to make your changes permanent.
This MED value is propagated with all of the BGP updates that are propagated by Nokia
Platform D to all of its EBGP peers in AS100 and AS200.
Nokia
Platform B
Nokia
Platform A
Nokia
Platform C
Nokia
Platform D
EBGP
EBGP
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AS100 AS200
AS4