Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
469
Views
0
Helpful
3
Replies

Trunk problem

Tshi M
Level 5
Level 5

‎11-12-2007 09:41 AM - edited ‎03-05-2019 07:22 PM

what will cause a switch to see itself in the CDP while trying to establish a trunk?

Labels:
0 Helpful
3 Replies 3

szahid
Level 3
Level 3

‎11-12-2007 11:55 AM

somehow the port is looped . One reason you will see that is when a port goes to a hub and hub has 2 connections back to the switch.

0 Helpful

Tshi M
Level 5
Level 5
In response to szahid

‎11-12-2007 03:33 PM

it is a fiber to fiber connectivity. The 4503 which sees itself in the CDP is connected to a 3560 through a fiber cable.

0 Helpful

Tshi M
Level 5
Level 5
In response to Tshi M

‎11-12-2007 04:06 PM

it looks like a bad module:

Nov 12 18:49:15.166 est: %C4K_GBICMAN-3-GBICSEEPROMREADFAILED: Failed to read gbic serial eeprom on port Gi1/1, try reinserting

0 Helpful
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:

Customers Also Viewed These Support Documents
Review Cisco Networking products for a $25 gift card