Disabling Interfaces From Sending Ospf Packets; Configuring Stub Routers - 3Com MSR 50 Series Configuration Manual

n
Disabling Interfaces
from Sending OSPF
Packets
n
Configuring Stub
Routers
To do...
Configure the LSA
generation interval
With this command configured, when network changes are not frequent, LSAs
are generated at the minimum-interval. If network changes become frequent, LSA
generation interval is incremented by incremental-interval•2
generation times) each time a generation occurs, up to the maximum-interval.
Follow these steps to disable an interface from sending routing information to
other routers:
To do...
Enter system view
Enter OSPF view
Disable interfaces from
sending OSPF packets
Different OSPF processes can disable the same interface from sending OSPF
■
packets. Use of the silent-interface command disables only the interfaces
associated with the current process rather than interfaces associated with other
processes.
After an OSPF interface is set to silent, other interfaces on the router can still
■
advertise direct routes of the interface in router LSAs, but no OSPF packet can
be advertised for the interface to find a neighbor. This configuration can
enhance adaptability of OSPF networking and reduce resource consumption.
A stub router is used for traffic control. It informs other OSPF routers not to use it
to forward data, but they can have a route to the stub router.
The router LSAs from the stub router may contain different link type values. A
value of 3 means a link to the stub network, so the cost of the link remains
unchanged. A value of 1, 2 or 4 means a point-to-point link, a link to a transit
network or a virtual link, in such cases, a maximum cost value of 65535 is used.
Thus, other neighbors find the links to the stub router have such big costs, they
will not send packets to the stub router for forwarding as long as there is a route
with a smaller cost.
Follow these steps to configure a router as a stub router:
To do...
Enter system view
Configuring OSPF Network Optimization
Use the command...
lsa-generation-interval
maximum-interval [ initial-interval
incremental-interval ] ]
Use the command...
system-view
ospf [ process-id | router-id
router-id | vpn-instance
instance-name ] *
silent-interface { all |
interface-type interface-number }
Use the command...
system-view
949
Remarks
Optional
By default, the maximum
interval is 5 seconds, the
minimum interval is 0
millisecond and the
incremental interval is 5000
milliseconds.
n-2 (n is the number of
Remarks
-
-
Optional
Not disabled by default
Remarks
-