10
Step Command
Remarks
2.
Configure the
source address of
echo packets.
bfd echo-source-ip
ip-address
Not configured by default.
For more information about
this command, see
High
Availability Command
Reference
.
3.
Enable BFD echo
mode for static
routes.
•
Approach 1:
ip route-static
dest-address
{
mask
|
mask-length
}
interface-type
interface-number
next-hop-address
bfd
echo-packet
[
preference
preference-value
] [
tag
tag-value
] [
description
description-text
]
•
Approach 2:
ip route-static vpn-instance
s-vpn-instance-name
&<1-6>
dest-address
{
mask
|
mask-length
}
interface-type interface-number
next-hop-address
bfd
echo-packet
[
preference
preference-value
] [
tag
tag-value
] [
description
description-text
]
Use either approach.
Configuring static route FRR
NOTE:
Only the A5500 EI Switch Series supports static route FRR.
A link or router failure on a path can cause packet loss and even routing loop. Static route fast reroute
(FRR) enables fast rerouting to minimize the impact of link or node failures.
Figure 1
Network diagram
As shown in
, upon a link failure, FRR designates a backup next hop by using a routing policy for
routes matching the specified criteria. Packets are directed to the backup next hop to avoid traffic
interruption.
Configuration prerequisites
Configuring static route FRR needs to reference a routing policy. You can specify a backup next hop in
a routing policy by using the
apply fast-reroute backup-interface
command. For more information about
the command and routing policy configurations, see "
