3Com S7906E - Switch, Configuration Manual

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Advertising a Default Route
A router running IS-IS cannot redistribute any default route and thus cannot advertise a default route to
other neighbors. You can use the following commands to advertise a default route of 0.0.0.0/0 to the
same level neighbors.
Follow these steps to advertise a default route:
To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
—
Advertise a default
route
default-route-advertise [ route-policy
route-policy-name | [ level-1 | level-1-2 |
level-2 ] ] *
Required
The function is disabled by
default.
The default route is only advertised to routers at the same level. You can use a routing policy to
generate the default route only when a local routing entry is matched by the policy.
Configuring IS-IS Route Redistribution
Redistribution of large numbers of routes on a device may affect the performance of other devices in the
network. In that case, you can configure a limit on the number of redistributed routes to limit the number
of routes to be advertised.
Follow these steps to configure IS-IS route redistribution from other routing protocols:
To do… Use the command… Remarks
Enter system view system-view ––
Enter IS-IS view
isis [ process-id ] [ vpn-instance
vpn-instance-name ]
––
Redistribute routes
from another routing
protocol
import-route protocol [ process-id |
all-processes | allow-ibgp ] [ cost cost |
cost-type { external | internal } |
[ level-1 | level-1-2 | level-2 ] |
route-policy route-policy-name | tag
tag ] *
Required
No route is redistributed by
default.
If no level is specified, routes
are redistributed into the
Level-2 routing table by default.
Configure the
maximum number of
redistributed Level
1/Level 2 IPv4 routes
import-route limit number
Optional
The default value depends on
the SRPU models, LPU
models, and their working
modes.