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

153
Ste
p
Command Remarks
2. Enter IS-IS view or IS-IS
IPv4 unicast address family
view.
• Enter IS-IS view:
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
• 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 ]
d. topology topo-name tid tid
Use either method.
3. Configure the SPF
calculation interval.
timer spf maximum-interval
[ minimum-interval [ incremental-interval ] ]
By default:
• The maximum interval is 5
seconds.
• The minimum interval is 50
milliseconds.
• The incremental interval is
200 milliseconds.
Configuring convergence priorities for specific routes
A topology change causes IS-IS routing convergence. To improve convergence speed, you can assign
convergence priorities to IS-IS routes. Convergence priority levels are critical, high, medium, and low. The
higher the convergence priority, the faster the convergence speed.
By default, IS-IS host routes have medium convergence priority, and other IS-IS routes have low
convergence priority.
To assign convergence priorities to specific IS-IS routes:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. 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.
3. Assign convergence priorities
to specific IS-IS routes.
prefix-priority { critical | high | medium }
{ prefix-list prefix-list-name | tag tag-value }
prefix-priority route-policy route-policy-name
By default, IS-IS routes,
except IS-IS host routes,
have the low
convergence priority.