R0106-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V7)

165
Ste
p
Command Remarks
5. Enter IS-IS IPv4 unicast
address family view or
IS-IS IPv4 unicast topology
view.
• Enter IS-IS IPv4 unicast address family
view:
a. isis [ process-id ] [ vpn-instance
vpn-instance-name ]
b. cost-style { wide | wide-compatible }
c. address-family ipv4 [ unicast ]
• Enter IS-IS IPv4 unicast topology view:
d. isis [ process-id ] [ vpn-instance
vpn-instance-name ]
e. cost-style { wide | wide-compatible }
f. address-family ipv4 [ unicast ]
g. topology topo-name tid tid
Use either method.
6. Enable IS-IS FRR using a
routing policy.
fast-reroute route-policy route-policy-name
By default, this feature is not
enabled.
Configuring BFD for IS-IS FRR
By default, IS-IS FRR does not use BFD to detect primary link failures. To speed up IS-IS convergence,
enable BFD single-hop echo detection for IS-IS FRR to detect primary link failures.
To configure BFD for IS-IS FRR:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Configure the source IP address
of BFD echo packets.
bfd echo-source-ip ip-address
By default, the source IP address of
BFD echo packets is not
configured.
3. Enter interface view.
interface interface-type
interface-number
N/A
4. Enable BFD for IS-IS FRR.
isis primary-path-detect bfd echo
By default, BFD for IS-IS FRR is
disabled.
Configuring IS-IS MTR
Typically, service packets with the same destination are forwarded over the same link. To forward them
over different links, you can use one of the following methods:
• Policy-based routing (PBR). Use PBR to change the next hop.
• Traffic engineering (TE).
• Multi-Topology Routing (MTR).
MTR is based on topology and is easier to deploy than TE. MTR splits the base topology of a specific
address family (for example, IPv4) into multiple topologies, and forwards traffic on a per-topology basis.
For more information about IPv6 IS-IS MTR, see "Configuring IPv6 IS-IS."