From: ALL From_NJ (all.from.nj@gmail.com)
Date: Thu Feb 26 2009 - 20:48:38 ARST
Hey Net and Naveen,
I have tried this and I also can not get it to work with ISL on the edge
switches ... only dot1q. I labbed it this afternoon.
Here is a relevant excerpt from the 3560 guide:
"
When configuring IEEE 802.1Q tunneling on an edge switch, you must use IEEE
802.1Q trunk ports for sending packets into the service-provider network.
However, packets going through the core of the service-provider network can
be carried through IEEE 802.1Q trunks, ISL trunks, or nontrunking links.
"
Looks like the connection into the SP (in this case SW4) must be dot1q. In
the SP's network, they can run ISL. I tested this in my lab and it works
this way. Here is a link to the 3560 guide (watch the word wrap):
HTH,
Andrew
On Thu, Feb 26, 2009 at 5:37 PM, NET HE <he_net@hotmail.com> wrote:
> Are you sure the question? I don't think dot1qtunnel supports isl-in-q. To
> my
> understanding, dot1qtunnel only support q-in-q.
>
> Best Regards,
> Net (Xin) He
>
>
>
>
> > Date: Wed, 25 Feb 2009 21:56:43 -0800
> > Subject: LACP over dot1q-tunnels
> > From: navin.ms@gmail.com
> > To: ccielab@groupstudy.com
> >
> > Guys,
> >
> > In IEWB Lab-20, the task it to do LACP port-channel b/n SW1 and SW3,
> where
> > SW4 is in the middle.
> >
> > SW1==(19,21)==============(13,15)==SW4==(19,21)==============(19,21)==SW3
> >
> > *Task:*
> > Configure interfaces 19 & 21 on SW1 and SW3 as ISL Trunks.
> > These links should be bound togather by LACP negotiation.
> > Do not use DTP to accomplish this.
> > SW1 and SW3 are in VTP domain 789. SW4 is in domain 10.
> >
> > *Problem:*
> > I could get following config working for dot1q encapsulation, but *not
> for
> > ISL*. Can someone plz try on their rack ?
> >
> > *SW4:*
> > interface GigabitEthernet1/0/13
> > switchport access vlan 100
> > switchport trunk encapsulation dot1q
> > switchport mode dot1q-tunnel
> > switchport nonegotiate
> > l2protocol-tunnel point-to-point lacp
> > !
> > interface GigabitEthernet1/0/15
> > switchport access vlan 200
> > switchport trunk encapsulation dot1q
> > switchport mode dot1q-tunnel
> > switchport nonegotiate
> > l2protocol-tunnel point-to-point lacp
> > !
> > interface GigabitEthernet1/0/19
> > switchport access vlan 100
> > switchport trunk encapsulation dot1q
> > switchport mode dot1q-tunnel
> > switchport nonegotiate
> > l2protocol-tunnel point-to-point lacp
> > !
> > interface GigabitEthernet1/0/21
> > switchport access vlan 200
> > switchport trunk encapsulation dot1q
> > switchport mode dot1q-tunnel
> > switchport nonegotiate
> > l2protocol-tunnel point-to-point lacp
> > !
> >
> > *SW1 and SW3:*
> > interface GigabitEthernet1/0/19
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > switchport nonegotiate
> > channel-group 1 mode active
> > !
> > interface GigabitEthernet1/0/21
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > switchport nonegotiate
> > channel-group 1 mode active
> > !
> > interface Port-channel1
> > switchport trunk encapsulation dot1q
> > switchport mode trunk
> > switchport nonegotiate
> >
> > TIA,
> > Naveen.
> >
> >
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