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New Member

Excessive collision in the Router

Hi All in Router i am the getting error:AMDP2_FE-6-EXCESSCOLL: Ethernet0/0 TDR=1, TRC=0

Router is connected to Switch, both router and switch config is below

can some body tell me how to fix up this issue as i am planning to change Duplex setting router from half duplex to full duplex

will this solve my problem

Router config:-

interface Ethernet0/0

description ### LAN ###

ip address 10.21.1.2 255.255.0.0

ip access-group 141 in

ip route-cache flow

half-duplex

standby ip 10.21.1.1

standby preempt

end

====================

Switch config

interface GigabitEthernet0/1

description ***FREE***

no logging event link-status

no snmp trap link-status

no mdix auto

spanning-tree portfast

spanning-tree bpdufilter enable

spanning-tree guard root

==================

Erros

AMDP2_FE-6-EXCESSCOLL: Ethernet0/0 TDR=1, TRC=0

AMDP2_FE-6-EXCESSCOLL: Ethernet0/0 TDR=1, TRC=0

AMDP2_FE-6-EXCESSCOLL: Ethernet0/0 TDR=1, TRC=0

AMDP2_FE-6-EXCESSCOLL: Ethernet0/0 TDR=1, TRC=0

15 REPLIES

Re: Excessive collision in the Router

Ermmm you already know the issue - Change the duplex to full or auto on the router and switch port.

HTH>

New Member

Re: Excessive collision in the Router

Will this soultion work

Hall of Fame Super Blue

Re: Excessive collision in the Router

Yes. Either change both to auto neogotiate or change the router to full duplex.

Jon

Re: Excessive collision in the Router

Faster typing again Jon!

:o)

Hall of Fame Super Blue

Re: Excessive collision in the Router

I've been practicing :)

Re: Excessive collision in the Router

Set the router ethernet speed/duplex to 10/full

Set the switch port speed/duplex to 10/full

This will fix your issue.

HTH>

New Member

Re: Excessive collision in the Router

Hi,

Is it necessary to change on Switch side as i belive switch can do auto negotiate and also no speed settings has defined on the swtich side

Hall of Fame Super Blue

Re: Excessive collision in the Router

If you want to auto-negotiate then set the router interface to auto-negotiate ie. get rid of the "duplex half" statement.

I would do as Andrew suggested though - set both to 10full.

Jon

New Member

Re: Excessive collision in the Router

Hi

Thanks for the replies,

but this router suports only full Force full duplex operation//half Force half-duplex operation

So please let me know is it required to change at swtich end also

Hall of Fame Super Blue

Re: Excessive collision in the Router

If you are setting the router interface to full duplex then do the same on the switch port.

Jon

New Member

Re: Excessive collision in the Router

Dear All,

Thanks very much for the all for giving the replies.

lastly will be there any impact on the network interms of outage if executing this change on both router and switches

Hall of Fame Super Blue

Re: Excessive collision in the Router

Yes, traffic will be disrupted when you make the change. Probably best to do it out of hours.

Jon

New Member

Re: Excessive collision in the Router

Thanks Jon,

Willbe doing the change after business hours, could you please let me know how much will be the down time

Hall of Fame Super Blue

Re: Excessive collision in the Router

It's more of quick interruption in traffic forwarding rather than full downtime. About 1 min per change should be more than enough.

Jon

New Member

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