From: Greg Wendel (gwendel@gmail.com)
Date: Mon Feb 04 2008 - 01:50:22 ARST
Emil,
Sounds like you may be working on IE lab 18. If so you will need to look
carefully at your dot1q tunneling config. Lookup point to point dot1q on
the doc cd for help. Also watch carefully for mac address flapping. I
agree with John that more information would be helpful.
Good luck,
On Feb 3, 2008 11:50 AM, John <jgarrison1@austin.rr.com> wrote:
> Well I don't like the fact that your Po1--po3 po1-po4 connection is
> messy,
> I'm sure it's supposed to be po1-po1 po3-po3 etc. Why configure the l2
> tunnel? Are SW3 and SW4 supposed to see each other as cdp neighbors? You
> don't tell us what the task is, but I don't think being able to ping shows
> that you've accomplished it. Maybe they have you configuring l2 tunnels
> for
> no reason, in which case I'm clueless.
>
> ----- Original Message -----
> From: "YourPal" <dearprudence28@gmail.com>
> To: <ccielab@groupstudy.com>
> Sent: Saturday, February 02, 2008 5:52 PM
> Subject: Layer 2 Tunneling for EtherChannels
>
>
> > Hi Group,
> >
> > I have the following physical LAN cabling:
> >
> > SW3 (Gi0/14) ---------- (Fa0/17) SW1 (Fa0/20) ---------- (Gi0/14) SW4
> > SW3 (Gi0/15) ---------- (Fa0/18) SW1 (Fa0/21) ---------- (Gi0/15) SW4
> >
> > The logical connectivity required is as follows:
> >
> > SW3 (Po1) ----------subnet 148.1.1.0/24---------- (Po1) SW4
> >
> > The task requires configuring L2 tunneling on SW1.
> >
> > My config as follows:
> >
> > SW3
> > ---
> > interface range Gi0/14 - 15
> > no switchport
> > channel-group 1 mode on
> > !
> > interface Port-channel1F
> > no switchport
> > ip address 148.1.1.9 255.255.255.0
> > !
> >
> > SW4
> > ---
> > interface range Gi0/14 - 15
> > no switchport
> > channel-group 1 mode on
> > !
> > interface Port-channel1
> > no switchport
> > ip address 148.1.1.10 255.255.255.0
> > !
> >
> > SW1
> > ---
> > interface range Fa0/17 - 18
> > switchport
> > channel-group 3 mode on
> > !
> > interface range Fa0/20 - 21
> > switchport
> > channel-group 4 mode on
> > !
> > interface Port-channel3
> > switchport access vlan 100
> > switchport mode dot1q-tunnel
> > l2protocol-tunnel cdp
> > spanning-tree bpdufilter enable
> > !
> > interface Port-channel4
> > switchport access vlan 100
> > switchport mode dot1q-tunnel
> > l2protocol-tunnel cdp
> > spanning-tree bpdufilter enable
> > !
> >
> >
> > It seems to work because SW3 and SW4 can ping each other. Can anyone
> > comment
> > whether this is really the correct way of configuring the task
> > requirement?
> >
> >
> > Thank you.
> >
> > BR,
> > Emil
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
>
> _______________________________________________________________________
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>
-- Gregory Wendel Springfield VA, 22153
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