Multicast and Routing Guide K/KA/KB.15.15

Changing the retransmitting interval on a virtual link
Syntax:
area area-id virtual link ip-address retransmit-interval
1-3600
Used in the router OSPF context on both ABRs in a virtual link to change the number
of seconds between LSA retransmissions on the virtual link.
The retransmit-interval setting must be the same on both ABRs on a given virtual
link. This value is also used when retransmitting database description and link-state
request packets.
area-id Specifies the OSPF area in which both ABRs in a given virtual link
operate. In this use, the area ID is sometimes termed "transit area
ID." This value must be the same for both ABRs in the virtual link.
ip-address For an ABR in a given virtual link, this is the IP address used to
create the link on that ABR. (This IP address matches the IP address
of the interface on the opposite end of the virtual link. See the
description of ip-address in the syntax description under
“Configuring a virtual link” (page 159).)
Use show ip ospf virtual-link ip-address to view the current setting.
Default: 5 seconds; range: 1–3600 seconds
Changing the transit-delay on a virtual link
Syntax:
area area-id virtual link ip-address transit-delay [0-3600]
Used in the router OSPF context on both ABRs in a virtual link to change the
estimated number of seconds it takes to transmit a link state update packet over a
virtual link. The transit-delay setting must be the same on both ABRs on a
given virtual link.
area-id Specifies the OSPF area in which both ABRs in a given virtual link
operate. In this use, the area ID is sometimes termed "transit area
ID." This value must be the same for both ABRs in the virtual link.
ip-address For an ABR in a given virtual link, this is the IP address used to
create the link on that ABR. (This IP address matches the IP address
of the interface on the opposite end of the virtual link. See the
description of ip-address in the syntax description under
“Configuring a virtual link” (page 159).)
Use show ip ospf virtual-link ip-address to view the current setting.
Default: 1 second; range: 1–3600 seconds
Example
To change the hello-interval on the virtual link configured for the network in Figure 35
(page 160) to 60 seconds:
• On routing switch "A" (IP address 10.0.0.1) you would use the following
command to reconfigure the current hello-interval to 60 seconds:
HP Switch(ospf)# area 1 virtual-link 209.157.22.1 hello-interval
60
• On routing switch "C" (IP address 209.157.22.1) you would use the following
command to reconfigure the current hello-interval to 60 seconds
162 Open Shortest Path First Protocol (OSPF)