08-09-2006 11:55 AM - edited 03-03-2019 04:26 AM
I'm trying to configure a port as trunk (dot1q), but for some reason I only have the choise between two options (access or multi)
Switch (config-if)# switchport mode ?
access
multi
So I'm missing the trunk option.
IOS Image running : c2900xl-hs-mz-112.8.6-sa6.bin
any help regarding this issue will be appreciated.
Thanx in advance
08-09-2006 12:35 PM
Trunk option is only available on enterprise software. See this link for more details:
Hope this helps.
Steve
08-09-2006 05:34 PM
Try to download the updated IOS for 2900xl from below :
http://tools.cisco.com/support/downloads/pub/MDFTree.x?butype=switches
There is no standard or enterprise feature set in the updated release, this ver. should support trunking. Please refer to the release note for the download IOS process.
Hope this helps.
08-09-2006 07:09 PM
Thanx for the reply,
I forgot to mention that the Switch is running the Enterprise version of the Software.
Thanx.
08-09-2006 07:32 PM
According to the release not below, the dot1q is supported from 11.2(8)SA5. Can you confirm you are running this or later release ?
http://www.cisco.com/en/US/tech/tk389/tk390/technologies_configuration_example09186a008009441a.shtml
Below is the capture from the link :
The Catalyst 2900XL/3500XL switches do not support Dynamic Trunking Protocol (DTP). Use the nonegotiate option for the switchport trunk command on the other side of the trunk link. Use of the nonegotiate option prevents the receipt of DTP frames from the peer that the XL switch cannot process.
And use "show port capabilities" to enable the port supports 802.1q.
Hope this helps.
08-10-2006 06:32 AM
Thanx to you all for the help.
I upgraded the IOS to the lateset version that can go on a 4MB 2900xl switch, The trunk option is still not available in the switchport mode command. My conclusion is the switch don't have the minimum hardware requirement to support VLAN trunking. Acording to Cisco the 4MB 2900XL does not support trunking. That is confirmed by this release note : http://www.cisco.com/en/US/tech/tk389/tk390/technologies_tech_note09186a008017f86a.shtml#subtopic2h
Thanx to you all again.
08-10-2006 08:34 AM
Thanks for your update and it is great that you find the reason yourself. It is too bad that you need to upgrade the switch to enable the trunking...
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