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Nokia Network Voyager for IPSO 4.0 Reference Guide 443
5. To prevent 192.168.22.0/24 and other more specific routes from being redistributed into
OSPF External, define a route filter to restrict only this route as follows:
a. To configure this filter, enter
192.168.22.0 in the New IP prefix to redistribute text
box, and
24 in Mask length text box. Click Apply.
b. Select Normal in the Match Type drop-down list. This specifies to prefer routes that are
equal to or more specific than 192.168.22.0/24.
c. Click Apply.
The filter is fully configured.
To redistribute routes from the Nokia OSPF network to the Corporate RIP
Network.
1. Use the Network Voyager connection to Nokia Platform A you previously created.
2. Click Route Redistribution under Configuration > Routing in the tree view.
3. Click the OSPF link in the Redistribute to RIP section.
4. To export all OSPF routes into RIP, click Accept in the All OSPF routes into RIP field; then
click Apply.
(Optional) To change the cost metric for RIP Routes into OSPF Externals, enter the new cost
metric in the Metric text box; then click Apply.
5. If you do not want to export all OSPF routes into RIP, click Restrict and define a route filter
to advertise only certain OSPF routes into RIP.
6. Assume that Nokia Platform B has another interface not shown in the diagram and that it has
two additional OSPF routes: 10.0.0.0/8 and 10.1.0.0/16
. To exclude all routes that are
strictly more specific than 10.0.0.0/8
; that is, you want to propagate 10.0.0.0/8 itself, but
you do not want to propagate the more specific route.
a. To configure this filter, enter
10.0.0.0 in New IP Prefix to Import text box, and 8 in
Mask length text box; Click Apply.
b. Select Refines in the Match Type drop-down list.
This specifies that you want routes that are strictly more specific than
10.0.0.0/8.
c. Finally, click Restrict in the Action field. This specifies that we want to discard the routes
that match this prefix.
d. Click Apply.
The filter is fully configured.
Redistributing OSPF to BGP Example
In the following example, Nokia Platform A is running OSPF and BGP and its local AS is 4.