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AR160 Customer Edge does not receive external routes from the Provider Edge

Publication Date:  2018-02-11 Views:  134 Downloads:  0
Issue Description

1- AR 160 have the ASE in its LSDB but does not install them in the routing table



Alarm Information

===============display ospf brief===============

======================================================

 

OSPF Process 1 with Router ID 10.100.100.74

          OSPF Protocol Information

 

RouterID: 10.100.100.74    Border Router:  AREA  AS

 ECA-route-type: 0x0306

Route Tag: 0

 PE Router, Multi-VPN-Instance is enabled

Global DS-TE Mode: Non-Standard IETF Mode

Graceful-restart capability: disabled

Helper support capability  : not configured

Spf-schedule-interval: max 10000ms, start 500ms, hold 1000ms

Default ASE parameters: Metric: 1 Tag: 1 Type: 2

Route Preference: 10

 ASE Route Preference: 150

 SPF Computation Count: 4

Handling Process

thru remote session 

 collecting the diag of both the PE and CE

Root Cause

1.      Check ospf peer on CE, the  tag for the peer is 1.  Checking on the PE, the tag for this ospf peer should be 1 too. If OSPF VPN multi-instance is deployed on a Multi-VPN-Instance CE (MCE), routes cannot be calculated based on Type3, Type5, or Type7 LSAs with the DN bit. Therefore, OSPF detects routing loops when calculating routes.

======================================================

  ===============display ospf brief===============

======================================================

 

OSPF Process 1 with Router ID 10.100.100.74

          OSPF Protocol Information

 

RouterID: 10.100.100.74    Border Router:  AREA  AS

 ECA-route-type: 0x0306

Route Tag: 0

 PE Router, Multi-VPN-Instance is enabled

Global DS-TE Mode: Non-Standard IETF Mode

Graceful-restart capability: disabled

Helper support capability  : not configured

Spf-schedule-interval: max 10000ms, start 500ms, hold 1000ms

Default ASE parameters: Metric: 1 Tag: 1 Type: 2

Route Preference: 10

 ASE Route Preference: 150

 SPF Computation Count: 4

 

2.      Solution for the issue is that add command vpn-instance-capability simple  on CE router.

#

ospf 1 router-id 10.100.100.74 vpn-instance astrapak

import-route direct

vpn-instance-capability simple

area 0.0.0.1

  network 10.100.100.28 0.0.0.3

  network 10.100.100.72 0.0.0.3

#

 


Solution
[Huawei-ospf-xx] vpn-instance-capability simple run it on the CE

END