Re: CDP Duplex Message [7:31284]
could you have duplex mismatches? Try locking them down to same speeds. -- RFC 1149 Compliant. FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CDP Duplex Message [7:31284]
I've seen this occur on when a Cisco switch is connected to another with a non-Cisco switch in the middle in the following manner: CISCOhalf-duplexNONCISCOfull-duplexCISCO CDP messages are not recognized by the non-Cisco switch, and are passed through unchanged. Each Cisco switch legitimately sets it's CDP duplex setting; however when they pass through the non-Cisco switch, the far-side Cisco switch is given the appearance of a duplex mismatch. Assuming there is no real duplex mismatch, you can try one of the following: -Disable CDP -Change the logging levels In both cases, check CCO for details. (CCO Logging Explained:) http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_4/config/logging.htm Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31288&t=31284 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: CDP Duplex Message [7:31284]
Fix the problem and they will go away! Dave Russ Kreigh wrote: > > How do I disable these messages in my show log? > > *Jan 8 08:00:57: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on > FastEthernet0/0 > (not full duplex), with blah.blah.com FastEthernet0/0 (full duplex). -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31291&t=31284 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CDP Duplex Message [7:31284]
Make sure that both the router and the switch are hard set to the speed/duplex setting that you require. Such as possibly 100/full. Don't use Auto Negotiate. If you have any questions on this then give me an email and we can discuss further. -Original Message- From: MADMAN [mailto:[EMAIL PROTECTED]] Sent: Tuesday, January 08, 2002 10:33 AM To: [EMAIL PROTECTED] Subject: Re: CDP Duplex Message [7:31284] Fix the problem and they will go away! Dave Russ Kreigh wrote: > > How do I disable these messages in my show log? > > *Jan 8 08:00:57: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on > FastEthernet0/0 > (not full duplex), with blah.blah.com FastEthernet0/0 (full duplex). -- David Madland Sr. Network Engineer CCIE# 2016 Qwest Communications Int. Inc. [EMAIL PROTECTED] 612-664-3367 "Emotion should reflect reason not guide it" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31293&t=31284 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: CDP Duplex Message [7:31284]
The CDP duplex error message may not mean you have a mis-match in the speed/duplex somewhere. The message occurs because CDP version 2 packets include duplex information. CDP version 1 doesn't include duplex info. If you have a older device that speaks CDP version 1 only and you're router speaks CDP version 2 then you'll get this message. Ways to fix it are to disable CDP, or change from CDP version 2 to version 1. You can do this by doing a 'no cdp advertise-v2' globally on the routers. Not sure about the switches. --- "Bolton, Travis" wrote: > Make sure that both the router and the switch are > hard set to the > speed/duplex setting that you require. Such as > possibly 100/full. Don't > use Auto Negotiate. If you have any questions on > this then give me an email > and we can discuss further. > > -Original Message- > From: MADMAN [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, January 08, 2002 10:33 AM > To: [EMAIL PROTECTED] > Subject: Re: CDP Duplex Message [7:31284] > > > Fix the problem and they will go away! > > Dave > > Russ Kreigh wrote: > > > > How do I disable these messages in my show log? > > > > *Jan 8 08:00:57: %CDP-4-DUPLEX_MISMATCH: duplex > mismatch discovered on > > FastEthernet0/0 > > (not full duplex), with blah.blah.com > FastEthernet0/0 (full duplex). > -- > David Madland > Sr. Network Engineer > CCIE# 2016 > Qwest Communications Int. Inc. > [EMAIL PROTECTED] > 612-664-3367 > > "Emotion should reflect reason not guide it" [EMAIL PROTECTED] __ Do You Yahoo!? Send FREE video emails in Yahoo! Mail! http://promo.yahoo.com/videomail/ Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=31329&t=31284 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
