Users Guide

Usage Information The time interval between the hello packets must be the same for routers in a network.
Related Commands ip ospf dead-interval — sets the time interval before a router is declared dead.
ip ospf message-digest-key
Enable OSPF MD5 authentication and send an OSPF message digest key on the interface.
S4820T
Syntax
ip ospf message-digest-key keyid md5 key
To delete a key, use the no ip ospf message-digest-key keyid command.
Parameters
keyid Enter a number as the key ID. The range is from 1 to 255.
key Enter a continuous character string as the password.
Defaults No MD5 authentication is congured.
Command Modes INTERFACE
Command History
This guide is platform-specic. For command information about other platforms, refer to the relevant Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
9.1(0.0) Included usage information on maximum number of digest keys per interface.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre- 6.1.1.1 Introduced on the E-Series.
Usage Information
You can congure a maximum of six digest keys on an interface. Of the available six digest keys, the
switches select the MD5 key that is common. The remaining MD5 keys are unused.
To change to a dierent key on the interface, enable the new key while the old key is still enabled. Dell
Networking OS sends two packets: the rst packet authenticated with the old key and the second packet
authenticated with the new key. This process ensures that the neighbors learn the new key and
communication is not disrupted by keeping the old key enabled.
After the reply is received and the new key is authenticated, delete the old key. Dell recommends keeping
only one key per interface.
1074
Open Shortest Path First (OSPFv2 and OSPFv3)