Thanks for the comments, what they're doing is assigning a small number of
vlans 2 to 3 on the switches and linking them, so no problems with VLAN 1
but obviously this approach doesn't scale
cheers Pat
Patrick Donlon wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
I'm familiar
I'm familiar with the concept off using vlan trunks to send vlan information
to a connected switch, however I've been working on a new site and have
discovered that they use a different approach. I was surprised to find that
they just plug in the port off one switch straight into the next switch
[mailto:[EMAIL PROTECTED]]
Sent: Tuesday, September 04, 2001 9:34 AM
To: [EMAIL PROTECTED]
Subject: Vlans and trunking [7:18442]
I'm familiar with the concept off using vlan trunks to send vlan information
to a connected switch, however I've been working on a new site and have
discovered that they use
Kell is right about things being a mess later on.
The default vlan is VLAN 1, which carries the protocol control traffic for a
switched network. Things like STP BPDU's, DTP (ISL and dot1q), VTP, PAgP,
etc... In addition, if the management interfaces are set to VLAN 1 (the
default), then
Another problem with this approach is that you can't do Fast EtherChannel
between the switches if you're not using trunks. Also, this will inhibit
VLAN propagation.
It's better all around to use the correct Cisco technique for trunking
switches.
Message Posted at:
Then they're only x-mitting the traffic for one VLAN.. (which ever VLAN
the port is in on the one switch)... If they're only using VLAN 1
(default for all ports) then you can use this method because trunks are only
needed for multiple VLANs.
Mike W.
Patrick Donlon wrote in message
Why's this? I've configured FastEtherChannel without having to make the FEC
a trunk but this was between a 5500 and a 7500.. have you more
information for me to read indicating that you MUST make a FEC link a trunk
to work properly between switches?
As an aside: You don't always
You can too do etherchannel with a single VLAN though it's not as
common.
Dave
Ken Mays wrote:
Another problem with this approach is that you can't do Fast EtherChannel
between the switches if you're not using trunks. Also, this will inhibit
VLAN propagation.
It's better all around
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