From: CCIE To Be (ccie.tobe81@gmail.com)
Date: Sat Jan 10 2009 - 08:16:56 ARST
Got it
Thanks for the responses.
On Fri, Jan 9, 2009 at 6:57 PM, Scott Morris <smorris@internetworkexpert.com
> wrote:
> There's nothing preventing you from changing the MTU on all switches. In
> a real-life scenario, I would likely do that for consistency. But in your
> lab, you either do that (if allowed/desired) or you follow the traffic!
>
>
>
> Scott
>
>
>
> *From:* CCIE To Be [mailto:ccie.tobe81@gmail.com]
> *Sent:* Friday, January 09, 2009 8:00 AM
> *To:* smorris@internetworkexpert.com
> *Cc:* Cisco certification
> *Subject:* Re: MTU for dot1q-tunnel
>
>
>
>
>
> Would it not be an extra configuration to set MTU 1504 on all switches even
> if the traffic flow is not through above 2 switches ( SW1 & SW2 ) ?
>
>
>
> As discussed before we need to check the path of traffic as well. So this
> means we should consider the 'root' switch for the VLAN which is being use
> to double tag the customer's traffic ??
>
>
>
> If the root switch for those VLANs is different from SW3 & SW4 then we
> should change MTU on all switches OR can we say that it would be a best
> practice to change MTU on all switches despite of traffic flow ??
>
>
>
>
>
> Thanks
>
> On Fri, Jan 9, 2009 at 4:07 PM, Scott Morris <
> smorris@internetworkexpert.com> wrote:
>
> Well, let's look at it a different way.... As you follow the path through
> your network, IF you were to send out a packet with 1504 bytes, would it
> cause a problem on any of the "middle" switches?
>
> If the answer is yes (which it likely is) then yes, everyone should be
> aware
> of that.
>
> ;) Follow the frame/packet.
>
>
>
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> CCIE
> To Be
> Sent: Friday, January 09, 2009 6:37 AM
> To: Cisco certification
> Subject: MTU for dot1q-tunnel
>
> Dear Group,
>
> Below is the topology,
>
> SW1-------------------SW2
> | |
> | |
> R1-----SW3------------------SW4--------R2
>
> Trunks are configured among all switches and R1 & R2 are customer's
> routers.
> We need to configure dot1q-tunnel on SW3 and SW4 to transparently pass the
> traffic bewteen R1 & R2. My question is that should we need to increase mtu
> only on SW3 & SW4 or we should change mtu to 1504 on all switches ??
>
>
> HTH
>
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>
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