Users Guide

Version Description
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 configure 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 different key on the interface, enable the new key while the old key is
still enabled. Dell Networking OS sends two packets: the first 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.
NOTE: The MD5 secret is stored as plain text in the configuration file with service
password encryption. Write down or otherwise record the key. You cannot learn
the key once it is configured. Use caution when changing the key.
ip ospf mtu-ignore
Disable OSPF MTU mismatch detection upon receipt of database description (DBD) packets.
S4048–ON
Syntax
ip ospf mtu-ignore
To return to the default, use the no ip ospf mtu-ignore command.
Defaults Enabled.
Command Modes INTERFACE
Command History
This guide is platform-specific. For command information about other platforms, see
the relevant Dell Networking OS Command Line Reference Guide.
Open Shortest Path First (OSPFv2 and OSPFv3) 1394