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Knowledge Base

FAQ-What is Fill Rule of Forwarding Address of OSPF LSA

Publication Date:  2012-07-27  |   Views:  476  |   Downloads:  0  |   Author:  sherwin  |   Document ID:  EKB0000242093

Contents

Issue Description

Q:
What is fill rule of forwarding address of OSPF LSA?

Alarm Information

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Handling Process

A:
Forwarding Address is written when VRP meet the following situation.
1. OSPF is enabled on nect-hop interface of ASBR.
2. Next-hop interface of ASBR is not set as passive interface.
3. Next-hop interface of ASBR is not OSPF P2P or P2MP.
4. Next-hop interface address of ASBR is within network range of OSPF protocol.
5. Besides, FA is 0.0.0.0. 
For learnt ase lsa, the next-hop points to adv rtr when forwarding address is 0. When forwarding address is not 0, the next-hop points to forwarding address.

Root Cause

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Suggestions

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