EIGRP authentication on 3550

This looks like a bug but I might be missing something so I better check with you guys :-)

When I specify authentication for a routed port on the 3550, it accepts the commands and then ignores them and removes them from the running config.

 

SW1#sh run
Building configuration...

... ... ...


key chain EIGRP
 key 1
   key-string CISCO2005
   accept-lifetime 02:00:00 Mar 1 1993 00:15:00 Jan 1 2006
   send-lifetime 02:00:00 Mar 1 1993 23:44:59 Dec 31 2005
 key 2
   key-string CISCO2006
   accept-lifetime 23:14:59 Dec 31 2005 infinite
   send-lifetime 23:44:59 Dec 31 2005 infinite
!
interface FastEthernet0/5
 no switchport
 ip address 148.1.57.7 255.255.255.0

... ... ...

end

 

SW1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
SW1(config)#int f0/5
SW1(config-if)#ip authentication mode eigrp 100 md5
SW1(config-if)#ip authentication key-chain eigrp 100 EIGRP
SW1(config-if)#exit
SW1(config)#do sh run int f0/5
Building configuration...

Current configuration : 85 bytes
!
interface FastEthernet0/5
 no switchport
 ip address 148.1.57.7 255.255.255.0
end

Comments

  • SW1#sh ver
    Cisco IOS Software, C3550 Software (C3550-IPSERVICESK9-M), Version 12.2(44)SE1, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2008 by Cisco Systems, Inc.
    Compiled Fri 07-Mar-08 00:57 by weiliu
    Image text-base: 0x00003000, data-base: 0x012A2A18

    ROM: Bootstrap program is C3550 boot loader

    SW1 uptime is 33 minutes
    System returned to ROM by power-on
    System image file is "flash:/c3550-ipservicesk9-mz.122-44.SE1.bin"

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