RE: l2 tunnel

Thanks Marc, that link seems to be more for the router platform then the
3750/4500 switch type platform. I could be mistaken.

I did find something tonight that seems to lead me to believe that
"switchport mode dot1qtunnel" is for adding a second tag onto rcv'd (or
poping xmitted) frames..and that the "l2protocol-tunnel" command is for
causing cdp/stp/vtp to be tunneled along with that or not along with pushing
a second tag right there at the interface.. So I gather that I don't have to
use l2protocol-tunnel with switchport mode dot1qtunnel..

Aaron

From: marc edwards [mailto:renorider_at_gmail.com]
Sent: Tuesday, February 21, 2012 6:26 PM
To: Aaron
Cc: ccielab_at_groupstudy.com
Subject: Re: l2 tunnel

12.3(7)T

This feature was introduced.

http://www.cisco.com/en/US/docs/ios/lanswitch/configuration/guide/lsw_ieee_8
02.1q.html

On Tue, Feb 21, 2012 at 3:09 PM, Aaron <aaron1_at_gvtc.com> wrote:

Also, I'm not seeing the "switchport mode dot1q-tunnel" command, but am
seeing the l2protocol-tunnel command. Am I supposed to use both commands to
accomplish the tunnel?...or can I accomplish the tunnel simply using the
available command "l2protocol-tunnel" ?

Switch>
Switch>en
Switch#conf t
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#int g2/3
Switch(config-if)#swi
Switch(config-if)#switchport mo
Switch(config-if)#switchport mode ?
 access Set trunking mode to ACCESS unconditionally
 dynamic Set trunking mode to dynamically negotiate access or trunk
mode
 private-vlan Set the mode to private-vlan host or promiscuous
 trunk Set trunking mode to TRUNK unconditionally

Switch(config-if)#l2
Switch(config-if)#l2protocol-tunnel ?
 cdp Cisco Discovery Protocol
 drop-threshold Set drop threshold for protocol packets
 shutdown-threshold Set shutdown threshold for protocol packets
 stp Spanning Tree Protocol
 vtp Vlan Trunking Protocol
 <cr>

Switch(config-if)#l2protocol-tunnel
Switch(config-if)#sw mo
Switch(config-if)#sw mode ?
 access Set trunking mode to ACCESS unconditionally
 dynamic Set trunking mode to dynamically negotiate access or trunk
mode
 private-vlan Set the mode to private-vlan host or promiscuous
 trunk Set trunking mode to TRUNK unconditionally

Switch(config-if)#
Switch(config-if)#do sh run in g2/3
Building configuration...

Current configuration : 153 bytes
!
interface GigabitEthernet2/3
 l2protocol-tunnel cdp
 l2protocol-tunnel stp
 l2protocol-tunnel vtp
 no cdp enable
 spanning-tree bpdufilter enable
end

Switch(config-if)#no l2protocol-tunnel
Switch(config-if)#do sh run in g2/3
Building configuration...

Current configuration : 36 bytes
!
interface GigabitEthernet2/3
end

Switch(config-if)#
Switch(config-if)#
Switch(config-if)#sw
Switch(config-if)#l2
Switch(config-if)#l2protocol-tunnel
Switch(config-if)#do sh run in g2/3
Building configuration...

Current configuration : 153 bytes
!
interface GigabitEthernet2/3
 l2protocol-tunnel cdp
 l2protocol-tunnel stp
 l2protocol-tunnel vtp
 no cdp enable
 spanning-tree bpdufilter enable
end

Switch(config-if)#swi
Switch(config-if)#switchport mo
Switch(config-if)#switchport mode ?
 access Set trunking mode to ACCESS unconditionally
 dynamic Set trunking mode to dynamically negotiate access or trunk
mode
 private-vlan Set the mode to private-vlan host or promiscuous
 trunk Set trunking mode to TRUNK unconditionally

Switch(config-if)#do sh ver | in IOS
IOS (tm) Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version
12.2(18)EW, EARLY DEPLOYMENT RELE
Switch(config-if)#do sh ver | in 450

cisco WS-C4503 (MPC8245) processor (revision 4) with 262144K bytes of
memory.
Switch(config-if)#

Aaron

-----Original Message-----
From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of
Aaron
Sent: Tuesday, February 21, 2012 4:21 PM
To: ccielab_at_groupstudy.com
Subject: l2 tunnel

Is it possible to do layer 2 tunneling of everything, including cdp/stp/vtp
on a 3750 (and 4500) interface for only a single vlan while also doing
regular vlan processing of other vlans....on that same interface?

example, on 3750 port g1/0/8, i currenly have single dot1q tags for vlan 242
and 245, but i would also like to configure vlan 113 for complete tunneling
of all traffic arriving on g1/0/8 for cdp/stp/vtp and of course regular data
that is tagged with vlan 113.

Can this be done on the gear mentioned?

Aaron

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Received on Tue Feb 21 2012 - 21:14:25 ART