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Foundry Configuration Guide for the FESX, FSX, and FWSX
20 - 16
© Foundry Networks, Inc.
December 2005
•
0
– Disables encryption for the password or authentication string you specify with the command. The
password or string is shown as clear text in the running-config and the startup-config file. Use this option of
you do not want display of the password or string to be encrypted.
•
1
– Assumes that the password or authentication string you enter is the encrypted form, and decrypts the
value before using it.
NOTE:
If you want the software to assume that the value you enter is the clear-text form, and to encrypt display
of that form, do not enter
0
or
1
. Instead, omit the encryption option and allow the software to use the default
behavior.
If you specify encryption option
1
, the software assumes that you are entering the encrypted form of the password
or authentication string. In this case, the software decrypts the password or string you enter before using the
value for authentication. If you accidentally enter option
1
followed by the clear-text version of the password or
string, authentication will fail because the value used by the software will not match the value you intended to use.
Change the Timer for OSPF Authentication Changes
When you make an OSPF authentication change, the software uses the authentication-change timer to gracefully
implement the change. The software implements the change in the following ways:
•
Outgoing OSPF packets – After you make the change, the software continues to use the old authentication to
send packets, during the remainder of the current authentication-change interval. After this, the software
uses the new authentication for sending packets.
•
Inbound OSPF packets – The software accepts packets containing the new authentication and continues to
accept packets containing the older authentication for two authentication-change intervals. After the second
interval ends, the software accepts packets only if they contain the new authentication key.
The default authentication-change interval is 300 seconds (5 minutes). You change the interval to a value from 0
– 14400 seconds.
OSPF provides graceful authentication change for all the following types of authentication changes in OSPF:
•
Changing authentication methods from one of the following to another of the following:
•
Simple text password
•
MD5 authentication
•
No authentication
•
Configuring a new simple text password or MD5 authentication key
•
Changing an existing simple text password or MD5 authentication key
To change the authentication-change interval, enter a command such as the following at the interface
configuration level of the CLI:
FastIron SuperX Switch(config-if-2/5)# ip ospf auth-change-wait-time 400
Syntax:
[no] ip ospf auth-change-wait-time <secs>
The <secs> parameter specifies the interval and can be from 0 – 14400 seconds. The default is 300 seconds (5
minutes).
NOTE:
For backward compatibility, the
ip ospf md5-authentication
key-activation-wait-time
<seconds>
command is still supported.
Block Flooding of Outbound LSAs on Specific OSPF Interfaces
By default, the Layer 3 Switch floods all outbound LSAs on all the OSPF interfaces within an area. You can
configure a filter to block outbound LSAs on an OSPF interface. This feature is particularly useful when you want
to block LSAs from some, but not all, of the interfaces attached to the area.
Summary of Contents for FastIron Edge Switch X424
Page 36: ...Foundry Configuration Guide for the FESX FSX and FWSX 2 12 Foundry Networks Inc December 2005...
Page 56: ...Foundry Configuration Guide for the FESX FSX and FWSX 3 20 Foundry Networks Inc December 2005...
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Page 198: ...Foundry Configuration Guide for the FESX FSX and FWSX 8 38 Foundry Networks Inc December 2005...
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