R3303-HP HSR6800 Routers Layer 3 - IP Routing Configuration Guide

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Figure 49 Network diagram for IS-IS MTR
As shown in Figure 49, the base topology is split into two topologies, topology A and topology B. You
can forward voice traffic through topology A and video traffic through topology B.
Router B does not belong to topology A. In topology B, the links between Router A and Router D and
between Router B and Router C do not exist. Route calculation and traffic forwarding are performed in
each topology independently.
Configuration prerequisites
Before you configure IS-IS MTR, complete the following tasks:
• Configure basic IS-IS functions to establish IS-IS neighbor relationships.
• Configure MTR. For more information, see "Configuring MTR."
Configuration procedure
To configure IS-IS MTR:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enter IS-IS view.
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
N/A
3. Set the IS-IS cost
style.
cost-style { narrow | wide |
wide-compatible | { compatible |
narrow-compatible } [ relax-spf-limit ] }
By default, narrow is adopted.
4. Enable an IS-IS IPv4
unicast topology in
the IS-IS process.
multiple-topology ipv4-unicast
topology-name topology-number
Not enabled default.
5. Return to system
view.
quit N/A
6. Enter interface
view.
interface interface-type interface-number N/A