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Nokia Network Voyager for IPSO 4.0 Reference Guide 111
connected to the backbone area. Both Nokia Platform B and Nokia Platform C are configured
with IP addresses (10.10.10.2 and 101.10.10.1 respectively).
The interfaces that comprise the virtual link between Nokia Platform A and Nokia Platform C
are both configured as unnumbered. This link will fail because OSPF does not support a virtual
link that uses an unnumbered interface on either end of the link.
underlying encapsulation. For
more information see RFC 2328. Any virtual link that uses OSPF must have an IP address
configured on both ends. The virtual link between Nokia Platform B and Nokia Platform C
functions because each Nokia Platform is configured with an IP address.
Cisco HDLC Protocol
To change the keepalive interval for Cisco HDLC
1. Click Interfaces under Configuration > Interface Configuration in the tree view.
2. Click the physical interface link to configure in the Physical column. Example:
ser-s2p1.
3. Enter a number in the Keepalive text box of the Physical Configuration table to configure
the Cisco HDLC keepalive interval.
Nokia
Platform A
Nokia
Platform B
Nokia
Platform C
Backbone
Area 1
Area 2
Area 3
00044
Virtual Link
Virtual Link
10.10.10.1
10.10.10.2
Unnumbered
Serial Link
Host PC Host PC
Host PCHost PC