10-27-2008 05:12 PM - edited 03-06-2019 02:10 AM
The link below only mentions 802.1Q but I believe it is a typo.
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/46sg/configuration/guide/tunnel.html
"Be aware that 802.1Q requires the Cisco Catalyst 4948, the Cisco Catalyst 4948-10GE, or the Catalyst 4500 series switch supervisor engines II-Plus-10GE V, or V-10GE; Layer 2 protocol tunneling is supported on all supervisor engines."
I'm pretty sure its not supported on the SupIV and only on certain Sup engines. Can someone confirm? Thanks a lot!
10-28-2008 06:38 AM
Looks like a type to me. Here's from one of my 4500's
XXX4506-1#sh ver
Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500-ENTSERVICESK9-M), Version 12.2(46)SG, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Fri 27-Jun-08 16:24 by prod_rel_team
Image text-base: 0x10000000, data-base: 0x11E3C0D8
ROM: 12.1(20r)EW1
Dagobah Revision 95, Swamp Revision 29
XXX4506-1 uptime is 5 weeks, 2 days, 3 hours, 52 minutes
System returned to ROM by reload
System restarted at 04:44:38 CDT Sun Sep 21 2008
System image file is "bootflash:cat4500-entservicesk9-mz.122-46.SG.bin"
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
cisco WS-C4506 (MPC8245) processor (revision 7) with 524288K bytes of memory.
Processor board ID FOX090102JA
MPC8245 CPU at 333Mhz, Supervisor IV
Last reset from Reload
17 Virtual Ethernet interfaces
20 Gigabit Ethernet interfaces
403K bytes of non-volatile configuration memory.
Configuration register is 0x2102
XXX4506-1#sh int trunk
Port Mode Encapsulation Status Native vlan
Gi1/1 on 802.1q trunking X
Gi1/2 on 802.1q trunking X
Gi2/1 on 802.1q trunking X
Gi2/2 on 802.1q trunking X
Gi2/3 on 802.1q trunking X
Gi2/4 on 802.1q trunking X
Gi2/5 on 802.1q trunking X
12-03-2008 07:51 AM
I have a same IOS on Cisco4500 (cat4500-ENTSERVICESK9-M), Version 12.2(46)SG, RELEASE SOFTWARE (fc1)
MPC8245 CPU at 333Mhz, Supervisor 6 E
I am trying to configure:
switchport trunk encap
but looks lits its not supported on the device or the IOS.
Is thier a correct IOS which support the trunk encaplusation.
12-03-2008 02:05 PM
most likely the port only supports 802.1Q. This is common for Cat4000 platform. The command only works on ports that support both 802.1Q and ISL. You can check with, example, show interface G1/1 capab
So, in your case, if you want to set it to trunk mode without negotiation, use command switch mode trunk
RobertSwitch#sh int g1/1 cap
GigabitEthernet1/1
Model: WS-X4515-Gbic
Type: No Gbic
Speed: 1000
Duplex: full
Trunk encap. type: 802.1Q,ISL
Trunk mode: on,off,desirable,nonegotiate
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