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Interoperation Configuration Guide

AR Router

This document provides cases for connecting AR enterprise routers to devices of other vendors.
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Exception Handling

Exception Handling

If the AR router and Cisco device cannot establish an OSPF neighbor relationship, perform the following operations to rectify this fault:

  1. Check whether the physical status and protocol status of interfaces on both ends are Up and stable, whether packets are lost on the interfaces, and whether the two devices can ping each other with large packets.

    If the physical status of the interfaces is not Up or unstable (interfaces flap for example), check the physical link and link layer protocol and ensure that the physical status and protocol status of the interfaces are Up and the interfaces have no error packet statistics.

  2. Check whether router IDs of OSPF processes on both ends are consistent.

    If the router IDs are consistent, run the ospf [ process-id ] router-id router-id command in the system view to change them to be different. After changing the router IDs, you must run the reset ospf [ process-id ] process command in the user view to make the configured router ID take effect.

  3. Check whether the two devices have the same OSPF area ID.

    If the two devices have different OSPF area IDs, run the area area-id command in the OSPF view to change their OSPF area IDs to be the same.

  4. Check whether OSPF interfaces on both ends have the same network type.

    If the network types of the two OSPF interfaces are different, run the ospf network-type { broadcast | nbma | p2mp | p2p } command in the OSPF interface view to change their network types to be the same.

  5. Check whether OSPF interfaces on both ends have the same IP address mask.

    If the two OSPF interfaces have different IP address masks, run the ip address ip-address { mask | mask-length } command in the OSPF interface view to change their IP address masks to be the same.

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Updated: 2019-05-17

Document ID: EDOC1100034005

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