HPE FlexFabric 5950 Series Configuration Manual page 226

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Method 1—Execute the pic command in BGP-VPN IPv4 unicast address family view. The
device calculates a backup next hop for each BGP route in the VPN instance if there are two or
more unequal-cost routes to reach the destination.
•
Method 2—Execute the fast-reroute route-policy command in BGP-VPN IPv4 unicast
address family view to use a routing policy. In the routing policy, specify a backup next hop by
using the apply fast-reroute backup-nexthop command. The backup next hop calculated by
the device must be the same as the specified backup next hop. Otherwise, the device does not
generate a backup next hop for the primary route. You can also configure if-match clauses in
the routing policy to identify the routes protected by FRR.
If both methods are configured, Method 2 takes precedence over Method 1.
To configure MPLS L3VPN FRR:
Step
1. Enter system view.
2. Enable MPLS BFD.
3. Configure the source IP
address for BFD echo
packets.
4. Use BFD to test the
connectivity of an LSP or
MPLS TE tunnel.
5. Create a routing policy
and enter routing policy
view.
6. Set the backup next hop
for FRR.
Command
system-view
mpls bfd enable
bfd echo-source-ip ip-address
•
Configure BFD to test the
connectivity of the LSP for the
specified FEC:
mpls bfd dest-addr
mask-length [ nexthop
nexthop-address
[ discriminator local local-id
remote remote-id ] ] [ template
template-name ]
•
Configure BFD to test the
connectivity of the MPLS TE
tunnel for the tunnel interface:
a. interface tunnel number
mode mpls-te
b. mpls bfd [ discriminator
local local-id remote
remote-id ] [ template
template-name ]
c. quit
route-policy route-policy-name
permit node node-number
apply fast-reroute
backup-nexthop ip-address
218
Remarks
N/A
The mpls bfd enable command
applies to VPNv4 route backup for
a VPNv4 route and IPv4 route
backup for a VPNv4 route. For
more information about this
command, see MPLS Command
Reference.
The bfd echo-source-ip
command is required when
echo-mode BFD is used to detect
primary route connectivity in
VPNv4 route backup for an IPv4
route. For more information about
this command, see High
Availability Command Reference.
By default, BFD is not configured to
test the connectivity of the LSP or
MPLS TE tunnel.
This step is required for VPNv4
route backup for a VPNv4 route
and IPv4 route backup for a VPNv4
route. Use either command
depending on the public tunnel
type.
For more information about the
commands in this step, see MPLS
Command Reference.
By default, no routing policies exist.
This step is required to enable
MPLS L3VPN FRR in Method 2.
For more information about this
command, see Layer 3—IP
Routing Command Reference.
By default, no backup next hop
address is set for FRR.