05-15-2009 07:03 AM - edited 03-04-2019 04:46 AM
Hi I connected ME 3400 directly with Catalyst 3750 metro switch.I enabled CDP and lldp.when i given sh cdp nei its not showing neighboring device.similarly for sh lldp neighbors also the same.In these switches cdp / lldp not supporting under interface.Allowing only from global config mode.Please help to solve this issue
05-15-2009 07:48 AM
Hello K.G. Pramod,
two notes:
1)I would try with only one protocol enabled at the global level.
Both protocols do the same job so it makes sense to use only one
to disable CDP on an interface
int type x/y
no cdp enable
2)
For LLDP depending on IOS version used there are some SW defects.
For LLDP to work well you need to use recent IOS versions like 12.2(46)SE or above
Among possible workarounds the assignment of an ip address in the client vlan on the SVI has been reported.
Hope to help
Giuseppe
05-16-2009 08:13 PM
yes i disabled cdp for entire router and enabled lldp from global config mode. on interface level ME 3400 not supporting lldp even though i use the same ios you specified.can to please help.should i change my switch to client mode ? but in cisco document says we can enable on interface level as well as globally. but on my real metro switch i didnt find this option.
05-16-2009 08:14 PM
yes i disabled cdp for entire router and enabled lldp from global config mode. on interface level ME 3400 not supporting lldp even though i use the same ios you specified.can to please help.should i change my switch to client mode ? but in cisco document says we can enable on interface level as well as globally. but on my real metro switch i didnt find this option.
05-17-2009 08:35 PM
Hi Giuseppe,
After my investigation i came to know frames are dropped.
Switch#sh lldp traffic
LLDP traffic statistics:
Total frames out: 0
Total entries aged: 0
Total frames in: 93
Total frames received in error: 0
Total frames discarded: 93
Total TLVs unrecognized: 0
and lldp interface status is
Switch#sh lldp interface
FastEthernet0/1:
Tx: enabled
Rx: enabled
Tx state: INIT
Rx state: INIT
How to fix the issue?Thanks in advance
05-17-2009 10:47 PM
Hello Pramod,
if the switch would support control plane policing I would think to check it.
Edit:
But it doesn't support it.
try to configure some LLDP param:
like
Switch# configure terminal
Switch(config)# lldp holdtime 120
Switch(config)# lldp reinit 2
Switch(config)# lldp timer 30
Switch(config)# end
see
Hope to help
Giuseppe
05-22-2009 06:21 AM
hi...
I fixed the issue the problem was under the interface i need to enable transmit command....
05-22-2009 12:49 PM
Hello Pramod,
kind of you to report you have solved thid issue this can help other people facing the same problem.
If I have correctly understood you added an lldp command under the interface and this solved.
Best Regards
Giuseppe
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide