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

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Figure 102 Network diagram
As shown in Figure 102, the numbers refer to the link costs. Router A, Router B, and Router D support both
IPv4 and IPv6. Router C supports only IPv4 and cannot forward IPv6 packets.
Enable IPv6 IS-IS MTR on Router A, Router B, Router C, and Router D to make them perform route
calculation separately in IPv4 and IPv6 topologies. With this configuration, Router A does not forward
IPv6 packets destined to Router D through Router B, avoiding packet loss.
For more information about MTR and IS-IS MTR, see "Configuring MTR" and "Configuring IS-IS."
Configuration prerequisites
Before you configure IPv6 IS-IS MTR, configure basic IPv4 and IPv6 IS-IS functions, and establish IS-IS
neighbors.
Configuration procedure
To enable IPv6 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. Specify an IS-IS cost style.
cost-style { wide |
wide-compatible }
By default, the IS-IS cost style is
narrow.
4. Enter IPv6 address family view.
address-family ipv6 [ unicast ] N/A
5. Enable IPv6 IS-IS MTR.
multi-topology [ compatible ]
By default, IPv6 IS-IS MTR is
disabled.
Displaying and maintaining IPv6 IS-IS
Execute display commands in any view. For other display and reset commands, see "Configuring IS-IS."
Task Command
Display information about routes
redistributed by IPv6 IS-IS.
display isis redistribute ipv6 [ ipv6-address mask-length ]
[ level-1 | level-2 ] [ process-id ]
Router A Router B
Router D
Router C
IPv4
IPv4
36
5
4
3
IPv6
IPv6
IPv4
IPv4
IPv6IPv6