Enabling Ipv6 Is-Is Auto Frr - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing

7.19.2 Enabling IPv6 IS-IS Auto FRR

If IPv6 IS-IS Auto FRR is enabled and the traffic protection inequality is satisfied, a backup
route can be generated.
Context
Perform the following steps on the router where traffic to be forwarded needs to be protected:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
isis [ process-id ]
The IS-IS process is enabled and the IS-IS view is displayed.
Step 3 Run:
ipv6 frr
The IPv6 IS-IS FRR view is displayed.
Step 4 Run:
loop-free-alternate [ level-1 | level-2 | level-1-2 ]
IPv6 IS-IS Auto FRR is enabled to generate a loop-free backup link.
If no level is specified, IPv6 IS-IS Auto FRR is enabled in Level-1 and Level-2 areas to generate
backup routes.
For details of IS-IS Auto FRR, see the HUAWEI NetEngine80E/40E Router Feature Description
- IP Routing.
----End
7.19.3 (Optional) Disabling an Interface from Participating in IPv6
LFA Calculation
To facilitate network management and fault location, you can prevent certain interfaces from
participating in the LFA calculation and specify the interfaces that can function as backup
outbound interfaces.
Context
To disable an interface that is enabled with IPv6 IS-IS from participating in the Loop-Free
Alternate (LFA) calculation, you need to perform the following steps on this interface:
Issue 02 (2014-09-30)
NOTE
IS-IS can generate loop-free backup routes only when the traffic protection inequality of IS-IS Auto FRR
is satisfied.
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