trunking [7:1098]
We have a 3512 switching dot1q trunking to a 5500. The 3512 has a linux server attached to the 3512 on a vlan. We have another linux server attached to the 5500 on the same vlan. The linux server on then 5500 works fine until the 3512 linux server comes up and then we lose connectivity to 5500 linux server. We cannot ping either box when they are both connected. In a quick fix we took off the trunking and put both gig port on the same vlan and now it works fine. Any thoughts why trunking causes a problem. Thanks Wm. Spencer Plantier LAN Engineer (919) 474-1300 ext 0873 Office (919) 474-1056 Fax (919)696-8848 Cell [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=1098t=1098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: trunking [7:1098]
I would look at the spannig tree state when the 2nd Linux server comes up. I am not a Linux expert, but it sounds like it may be running spanning tree instance that is causing the 3512's gig port to go into blocking mode. Does the Linux server have more than one NIC? Just a thought. __ Thomas Crowe Technical Director Research Development CTS - Atlanta Phone: 770-664-3900 ext 45 __ -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] Sent: Wednesday, April 18, 2001 11:53 AM To: [EMAIL PROTECTED] Subject: trunking [7:1098] We have a 3512 switching dot1q trunking to a 5500. The 3512 has a linux server attached to the 3512 on a vlan. We have another linux server attached to the 5500 on the same vlan. The linux server on then 5500 works fine until the 3512 linux server comes up and then we lose connectivity to 5500 linux server. We cannot ping either box when they are both connected. In a quick fix we took off the trunking and put both gig port on the same vlan and now it works fine. Any thoughts why trunking causes a problem. Thanks Wm. Spencer Plantier LAN Engineer (919) 474-1300 ext 0873 Office (919) 474-1056 Fax (919)696-8848 Cell [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] [GroupStudy.com removed an attachment of type text/x-vcard which had a name of Thomas Crowe.vcf] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=1122t=1098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Re: trunking [7:1098]
Can you see the MAC addresses on each switch? can you see ARP entries on any attached devices? What VLAN permissioning do you have on the trunks? can you post configs? Andy - Original Message - From: "Plantier, William (Spencer)" To: Sent: Wednesday, April 18, 2001 4:52 PM Subject: trunking [7:1098] We have a 3512 switching dot1q trunking to a 5500. The 3512 has a linux server attached to the 3512 on a vlan. We have another linux server attached to the 5500 on the same vlan. The linux server on then 5500 works fine until the 3512 linux server comes up and then we lose connectivity to 5500 linux server. We cannot ping either box when they are both connected. In a quick fix we took off the trunking and put both gig port on the same vlan and now it works fine. Any thoughts why trunking causes a problem. Thanks Wm. Spencer Plantier LAN Engineer (919) 474-1300 ext 0873 Office (919) 474-1056 Fax (919)696-8848 Cell [EMAIL PROTECTED] FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] Message Posted at: http://www.groupstudy.com/form/read.php?f=7i=1153t=1098 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]