From: John (jgarrison1@austin.rr.com)
Date: Sun Mar 09 2008 - 23:22:55 ARST
First what is the specific task? Is it for SW1 to see SW4 as a CDP
neighbor? There should be a reason for the L2 tunnel. I really don't like
your etherchannel numbering. I know that etherchannel #'s don't have to
match at both ends, but I try to keep my configs that way for ease of
administration ie no to SW1 po4 to SW4 po1, yes to SW1 po14 to SW4 po14
----- 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-channel1
> 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
>
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