hi chuck,, yeah, it is abit funny ,one thing also i noticed , that sometime i had to do a "clear CDP table" before this properly kicked in ....all my 3548`s were ok ,but some of the older 2926MXL`s need that...
but i agree with you about the bug.....number 1XX in an ever increasing list of bugs Cheers steve ... ----- Original Message ----- From: "The Long and Winding Road" To: Sent: Friday, January 03, 2003 9:13 PM Subject: Re: Possible CDP bug? Check it out! [7:59929] > ""steve"" wrote in message > [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... > > hey.. > > > > > > AT Last i think i can try and properly help someone ....yippe.. > > > > on your switches type this message > > > > no cdp advertise V2 > > > > i have had this all over my network ..and you are correct it is a bug in > CDP > > > yep - changing to ver 1 eliminates the problem. interesting. > > the other part of this is the duplex issue on the 2611. CDP ver 2 claims > the port is half duplex. the router and the switch claim it is full duplex. > I know that originally the 2610/11 were 10 meg half, and that IOS > 12.something allowed one to bring this up to full. I suspect there is still > an IOS bug someplace that is involved. I do not recall this issue when I was > writing my VPN tunnel lab for Cert Zone. At the time I was using my > employer's engineering lab, and IIRC the routers in question were 2621 - > different hardware beast. > > live and learn. > > > > > .. > > > > according to cisco ,this isn`t a fix just a work around > > > > H(and i mean HOPE)TH > > > > steve skinner > > (CCxx MCxx HPxx SCxx CSxx.....you know i wish i had some proper certs and > > not just the xx ones) > > ----- Original Message ----- > > From: "The Long and Winding Road" > > To: > > Sent: Sunday, December 29, 2002 9:06 AM > > Subject: Possible CDP bug? Check it out! [7:59929] > > > > > > > I've run into this situation while doing some practicing with the 3550s > > and > > > some routers > > > > > > 2611------3550-------3550--------3640 > > > > > > all ethernet ports are set at full duplex 10 megabit speed. > > > > > > the 2611 and the 3640 are connected via a vlan tunnel. > > > > > > everything is working fine, until I turn on l2protocol-tunnel cdp on > both > > > switches, at which point I get the following error: > > > > > > 3640 > > > FrameSwitch# > > > 1w0d: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/1 > > (not > > > hal > > > f duplex), with Router_14_2611 Ethernet0/1 (half duplex). > > > > > > 2611 > > > 1w0d: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on Ethernet0/1 > > (not > > > ful > > > l duplex), with FrameSwitch Ethernet0/1 (full duplex). > > > > > > as near as I can tell, there are no errors on any of the interfaces. no > > > collisions, etc. not that I'm sending a lot of traffic during these > > studies, > > > but extended pings don't come up with anything either. > > > > > > relevant configurations for all interfaces. as you can see, everything > > > agrees all along the line. everyone is set for speed 10 and duplex full. > > if > > > I turn off l2protocol-tuinnel cdp on the interfaces, the error messages > > > disappear. I suspect a bug in CDP, but I'm wondering if I have missed > > > anything. > > > > > > 2611 > > > ------- > > > interface Ethernet0/1 > > > no ip address > > > full-duplex > > > ! > > > interface Ethernet0/1.1 > > > encapsulation dot1Q 121 > > > ip address 122.1.1.1 255.255.255.0 > > > ! > > > interface Ethernet0/1.2 > > > encapsulation dot1Q 122 > > > ip address 122.1.2.1 255.255.255.0 > > > ! > > > interface Ethernet0/1.3 > > > encapsulation dot1Q 123 > > > ip address 122.1.3.1 255.255.255.0 > > > ! > > > interface Ethernet0/1.4 > > > encapsulation dot1Q 124 > > > ip address 122.1.4.1 255.255.255.0 > > > ! > > > > > > Switch_24#sri f0/1 > > > Building configuration... > > > > > > Current configuration : 200 bytes > > > ! > > > interface FastEthernet0/1 > > > switchport access vlan 100 > > > switchport mode dot1q-tunnel > > > no ip address > > > duplex full > > > speed 10 > > > l2protocol-tunnel cdp > > > no cdp enable > > > spanning-tree bpdufilter enable > > > end > > > > > > interface FastEthernet0/26 > > > switchport access vlan 100 > > > switchport mode dot1q-tunnel > > > no ip address > > > duplex full > > > speed 10 > > > l2protocol-tunnel cdp > > > no cdp enable > > > spanning-tree bpdufilter enable > > > end > > > > > > 3640 > > > ------- > > > interface Ethernet0/1 > > > no ip address > > > no ip redirects > > > full-duplex > > > priority-group 1 > > > ! > > > interface Ethernet0/1.1 > > > encapsulation dot1Q 121 > > > ip address 122.1.1.2 255.255.255.0 > > > ! > > > interface Ethernet0/1.2 > > > encapsulation dot1Q 122 > > > ip address 122.1.2.2 255.255.255.0 > > > ! > > > interface Ethernet0/1.3 > > > encapsulation dot1Q 123 > > > ip address 122.1.3.2 255.255.255.0 > > > ! > > > interface Ethernet0/1.4 > > > encapsulation dot1Q 124 > > > ip address 122.1.4.2 255.255.255.0 > > > ! > > > > > > Chuck > > > -- > > > TANSTAAFL > > > "there ain't no such thing as a free lunch" Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=60453&t=59929 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
