The ipv6 frr command enables IPv6 FRR for public routes.
The undo ipv6 frr command disables IPv6 FRR for public routes.
By default, IPv6 FRR is disabled for public routes.
Product |
Support |
|---|---|
S5720-EI, S5720-HI, S5720I-SI, S5720S-SI, S5720-SI, S5735-S, S5735S-S, S5735-S-I, S5730-HI, S5730S-EI, S5730-SI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-EI, S6720-HI, S6720S-EI, S6720S-SI, S6720-SI, S6730-H, S6730S-H, S6730-S, and S6730S-S |
Supported |
S2720-EI, S5720-LI, S5735-L, S5735S-L, S5735S-L-M, S5720S-LI, S6720-LI, and S6720S-LI |
Not supported |
| Parameter | Description | Value |
|---|---|---|
route-policy route-policy-name |
Enables IPv6 FRR for public routes matching the specified route-policy. |
The value must be an existing route-policy. |
all |
Disables IPv6 FRR for all public and private routes. If this parameter is not specified, IPv6 FRR is disabled for all public routes. |
- |
Usage Scenario
With the development of the network, services such as audio, online video, and finance have more requirements for real time. Generally, active/standby links are deployed on the network to ensure service stability.
However, under traditional forwarding modes, when multiple routes to the same destination exist, switch selects the optimal route, which is delivered to FIB table to direct data forwarding. When the optimal link is faulty, switch waits for the completion of route convergence, then selects another optimal route, and then deliver the route to the FIB table. Then the service is recovered. This process leads to a long-time service interruption and cannot meet service requirements.
Using the ipv6 frr command, you can enable IPv6 FRR of the public network. IPv6 FRR can specify a backup next hop and a backup interface and set backup forwarding information for IPv6 routes. When the active link is faulty, the system can switch the traffic immediately to the backup link. This process is irrelevant to route convergence and therefore services are interrupted for short time.
Pre-configuration Tasks
The ipv6 frr command should be used with the apply ipv6 backup-interface command and the apply ipv6 backup-nexthop command. It is required to use the route-policy command to create route-policy at first, in which the apply ipv6 backup-interface command and the apply ipv6 backup-nexthop command are used to set a backup outbound interface and a backup next hop for IPv6 route of the public network.
Precautions
Only one policy can be used at one time. New configuration will replace the previous one if another policy is configured. Configuration in the system view and that in the VPN instance IPv6 address family view will not interfere each other.
Using the undo ipv6 frr all command, IPv6 FRR of all the public network and the private networks is disabled. Use it with caution.
# Specify a backup outbound interface and a backup next hop in route-policy ipv6_frr_rp and enable IPv6 FRR for public routes in the system view.
<HUAWEI> system-view [HUAWEI] route-policy ipv6_frr_rp permit node 10 [HUAWEI-route-policy] apply ipv6 backup-interface vlanif 100 [HUAWEI-route-policy] apply ipv6 backup-nexthop 2000::1 [HUAWEI-route-policy] quit [HUAWEI] ipv6 frr route-policy ipv6_frr_rp