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Cisco L2/L3 Switch Unable to Communicate with L3 LACP

Posted on 2016-08-26
Last Modified: 2016-09-16
Hello Experts,

I posted a similar question yesterday, however I don't think I really got the answer I was hoping for. Therefore, I would like to post the question again.

The question is can someone let me know why I can't ping across the L3 port-channels. and

The interfaces are up and the channels are looking good:

There is also an adjacency across eigrp.

dlsw-5#show ip int brie
Interface              IP-Address      OK? Method Status                Protocol
Ethernet0/0            unassigned      YES manual up                    up      
Ethernet0/1            unassigned      YES manual up                    up      
Ethernet0/2            unassigned      YES unset  administratively down down    
Ethernet0/3            unassigned      YES unset  administratively down down    
Ethernet1/0            unassigned      YES unset  administratively down down    
Ethernet1/1            unassigned      YES unset  administratively down down    
Ethernet1/2            unassigned      YES unset  administratively down down    
Ethernet1/3            unassigned      YES unset  administratively down down    
Port-channel1      YES manual up                    up      
Vlan1                  unassigned      YES unset  administratively down down    

Group  Port-channel  Protocol    Ports
1      Po1(RU)         LACP      Et0/0(P)    Et0/1(P)    


EIGRP-IPv4 Neighbors for AS(100)
H   Address                 Interface              Hold Uptime   SRTT   RTO  Q  Seq
                                                   (sec)         (ms)       Cnt Num
0              Po1                      11 00:00:08    1  4500  1  0

Having said all of that I am getting the following error:

*Aug 26 09:04:54.371: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor (Port-channel1) is down: retry limit exceeded
*Aug 26 09:04:57.335: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor (Port-channel1) is up: new adjacency
*Aug 26 09:06:16.925: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor (Port-channel1) is down: retry limit exceeded
*Aug 26 09:06:17.610: %DUAL-5-NBRCHANGE: EIGRP-IPv4 100: Neighbor (Port-channel1) is up: new adjacency

I have attached the configs

Any help will be greatly appreciated.


Question by:Member_2_7966113
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Author Comment

ID: 41771872
I am now getting the following error message

Aug 26 09:18:12.035: EIGRP: Handle deallocation failure [0]
*Aug 26 09:18:12.035: EIGRP: Neighbor went down on Port-channel1

Author Comment

ID: 41771892
I'm using i86bi-linux-l2-adventerprisek9-15.2d
LVL 22

Accepted Solution

eeRoot earned 500 total points (awarded by participants)
ID: 41772624
Since you are using the "no switchport" command, you may need to add the "ip information-reply" command as well.

See -> http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipapp/command/iap-cr-book/iap-i1.html#wp1706748839

Author Comment

ID: 41772844

Thanks for the link. That solved the problem. Cheers
LVL 22

Expert Comment

ID: 41801196
the author indicted that the command "ip information-reply" resolved the issue

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