Reference Guide

1010 | Open Shortest Path First (OSPFv2 and OSPFv3)
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To delete a parameter of a virtual link, use the no area area-id virtual-link router-id
[[authentication-key [encryption-type] key] | [message-digest-key keyid md5
[encryption-type] key]] [dead-interval seconds] [hello-interval seconds]
[retransmit-interval seconds] [transmit-delay seconds] command syntax.
Parameters
Defaults
dead-interval seconds = 40 seconds; hello-interval seconds = 10 seconds; retransmit-interval
seconds = 5 seconds; transmit-delay seconds = 1 second
Command Modes
ROUTER OSPF
Command
History
Usage
Information
All OSPF areas must be connected to a backbone area (usually Area 0). Virtual links connect broken or
discontiguous areas.
area-id
Specify the transit area for the virtual link in dotted decimal format
(A.B.C.D.) or enter a number from zero (0) to 65535.
router-id
Specify an ID (IP address in dotted decimal format) associated with a
virtual link neighbor.
authentication-key
[encryption-type] key |
message-digest-key keyid
md5 [encryption-type] key
(OPTIONAL) Choose between two authentication methods:
• Enter the keyword
authentication-key to enable simple
authentication followed by an alphanumeric string up to 8
characters long. Optionally, for the
encryption-type variable,
enter the number 7 before entering the
key string to indicate that an
encrypted password will follow.
• Enter the keyword
message-digest-key followed by a
number from 1 to 255 as the
keyid. After the keyid, enter the
keyword
md5 followed by the key. The key is an alphanumeric
string up to 16 characters long. Optionally, for the
encryption-type variable, enter the number 7 before entering the
key string to indicate that an encrypted password will follow.
dead-interval seconds (OPTIONAL) Enter the keyword dead-interval followed by a
number as the number of
seconds for the interval.
Range: 1 to 8192.
Default: 40 seconds.
hello-interval seconds (OPTIONAL) Enter the keyword hello-interval followed by the
number of
seconds for the interval.
Range: 1 to 8192.
Default: 10 seconds.
retransmit-interval seconds (OPTIONAL) Enter the keyword retransmit-interval followed by
the number of
seconds for the interval.
Range: 1 to 8192.
Default: 5 seconds.
transmit-delay seconds (OPTIONAL) Enter the keyword transmit-delay followed by the
number of
seconds for the interval.
Range: 1 to 8192.
Default: 1 second.
Version 7.8.1.0 Introduced support for Multi-Process OSPF.
Version 7.6.1.0 Introduced on S-Series
Version 7.5.1.0 Introduced on C-Series
pre-Version 6.1.1.1 Introduced on E-Series