From: MADMAN (dave@interprise.com)
Date: Fri Jul 25 2003 - 19:03:45 GMT-3
Xy Hien Le wrote:
> Hi Mike,
> Thanks for the answer, the question now is how do I stop the vlans from
> propagating from swich 3550-1 to swich 3550-2?
> I tried to change the vtp domain name of switch 3550-2 but it still receive
> the Vlans!!!
Are you sure it's still receiving the VLANs or are they just leftover?
> I tried to config with the command: "switchport trunk allow vlan
> remove....." but the switch rejected the command due to the facts that the
> port-channel and channe-group are not switchports!
> Regards,
Do you need VTP? Diasable it, vtp mode transparent.
Dave
> Xy
> ----- Original Message -----
> From: "Mike Schlenger" <mschlenger@meridianitsolutions.com>
> To: "Xy Hien Le" <ccnp@hawaiibuyme.com>; <ccielab@groupstudy.com>
> Sent: Friday, July 25, 2003 11:09 AM
> Subject: RE: Cat 3550 port-channel
>
>
> VTP, a layer 2 protocol, if configured, transmits vlan information
> across all trunk ports. (Depending on the VTP mode your switch is in).
> When port channeling is configured, the ports participating in the
> channel become trunk ports.
>
> http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a
> 0080094c52.shtml#ustand
>
> Mike
>
> Michael Schlenger
> CCIE #7079
> Meridian IT Solutions
> mschlenger@meridianitsolutions.com
> 847.592.3912
>
>
>
> -----Original Message-----
> From: Xy Hien Le [mailto:ccnp@hawaiibuyme.com]
> Sent: Friday, July 25, 2003 3:42 PM
> To: ccielab@groupstudy.com
> Subject: Cat 3550 port-channel
>
>
> Hi everyone
>
> quick question:
>
> Why do the vlans still passing through two 3550 switches when both
> connected via a Port-Channel bundled by a Channel-group, assigned an ip
> address on both sides? I thought Channel Group with a layer 3 address
> would not permit any Vlan to pass through... am I missing something?
>
> Any idia on this?
>
> Enclosed are the configs of 2 switches:
>
>
>
> interface Port-channel1
> no switchport
> ip address 10.35.35.1 255.255.255.0
>
> interface FastEthernet0/21
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/22
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/23
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/24
> no switchport
> no ip address
> channel-group 1 mode desirable
> ........
>
>
> cat3550-2
>
> interface Port-channel1
> no switchport
> ip address 10.35.35.2 255.255.255.0
>
> interface FastEthernet0/21
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/22
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/23
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
> interface FastEthernet0/24
> no switchport
> no ip address
> channel-group 1 mode desirable
> !
>
> Thanks in advance,
>
> Xy
>
>
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-- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367"Government can do something for the people only in proportion as it can do something to the people." -- Thomas Jefferson
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