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Trunking on 2924XL

a_harkati
Level 1
Level 1

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

6 Replies 6

stomasko
Level 4
Level 4

Trunk option is only available on enterprise software. See this link for more details:

http://www.cisco.com/en/US/products/hw/switches/ps607/products_command_reference_chapter09186a008007eb8b.html#xtocid1053056

Hope this helps.

Steve

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.

a_harkati
Level 1
Level 1

Thanx for the reply,

I forgot to mention that the Switch is running the Enterprise version of the Software.

Thanx.

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.

a_harkati
Level 1
Level 1

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.

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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