cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
1764
Views
0
Helpful
2
Replies

Help configuring 3750 TenGig ports

ianhayter
Level 1
Level 1

Hi,

I'm trying to setup a trunk link between 2 3750G-16TD's using the TenGig interface.

The interfaces are configured as per any other trunk, however as soon as we cable to 2 devices up the interface immediately goes into err-disable;

Aug 14 18:54:58.501: %PM-4-ERR_DISABLE: link-flap error detected on Te1/0/1, putting Te1/0/1 in err-disable state

We have tried several different cables and configs.

Question is - is there any special config required to enable trunking using the TenGig interfaces???

Thanks in advance,

Iaqn

2 Replies 2

Nagaraja Thanthry
Cisco Employee
Cisco Employee

Hello,

The error disable is due to link issue. If the interface flaps beyond

threshold, the switch will errdisable the port. This seems purely a Physical

Layer issue. Can you please check the fiber and make sure that it is good?

Also, if you have any patch panels along the path, I would suggest bypassing

them to see if they are causing the issue.

Regards,

NT

glen.grant
VIP Alumni
VIP Alumni

  Sometimes you have to use mode conditioning patch cables for ten gig installs .Read thru doc and see if this pertains to your installations .  Normal fiber patches may not be enough.

http://www.cisco.com/en/US/prod/collateral/modules/ps5455/product_bulletin_c25-530836.html

Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: