R3303-HP 6600/HSR6600 Routers Layer 3 - IP Routing Configuration Guide

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Configuring the non-IETF standard OSPF GR helper
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enable OSPF and enter its
view.
ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *
N/A
3. Enable the link-local signaling
capability.
enable link-local-signaling Disabled by default.
4. Enable the out-of-band
re-synchronization capability.
enable
out-of-band-resynchronization
Disabled by default.
5. Configure the neighbors for
which the router can serve as
a GR Helper.
graceful-restart help { acl-number
| prefix prefix-list }
Optional.
The router can serve as a GR
Helper for any OSPF neighbor by
default.
Triggering OSPF GR
The following matrix shows the feature and router compatibility:
Feature 6602 HSR6602 6604/6608/6616
Triggering OSPF GR No No
• Yes when using the RPE-X1 or RSE-X1
MPU
• No when using the MCP MPU
An active/standby switchover or the following command triggers OSPF GR.
To trigger OSPF GR, perform the following command in user view:
Task Command
Trigger OSPF GR. reset ospf [ process-id ] process graceful-restart
Configuring OSPF NSR
The following matrix shows the feature and router compatibility:
Feature 6602 HSR6602 6604/6608/6616
OSPF NSR No No
• Yes when using the RPE-X1 or RSE-X1
MPU
• No when using the MCP MPU
With OSPF NSR, the standby MPU backs up link state information from the active MPU. Upon an
active/standby switchover, the link state information can recover automatically and the routes can be
regenerated without tearing down the adjacencies or impacting other services.