[j-nsp] juniper cisco switch interconnection

[Patrick Dickey]

Just a quick note: if you need multiple vlan STP (like what PVST+ has...),
use VSTP on the Juniper. Ensure that VLAN 1 is on any trunk line between the
Cisco and the Juniper. You don't need to have traffic there, but PVST+ uses
VLAN 1 and VSTP will listen on VLAN 1 for STP information. If it's not
configured, all kinds of strangeness occurs. 
YMMV

-Patrick

-----Original Message-----
From: juniper-nsp-bounces at puck.nether.net
[mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Benny Amorsen
Sent: Monday, December 10, 2012 2:16 PM
To: harbor235
Cc: Juniper List
Subject: Re: [j-nsp] juniper cisco switch interconnection

harbor235 <harbor235 at gmail.com> writes:

> Has anyone connected a Juniper EX series switch with a Cisco switch (I 
> have a 3550)?

Yes

> Do you use a standard crossover cable? MDIX?

I have only attempted 1Gbps, that just worked with a straight cable.

> Any Layer 2 issues with RSTP and PVST+?

It seems to work so far...

> Any specific configuration required to make it work?

Avoid VLAN 1. You can probably make VLAN 1 work if you try, but for me it
was easier to simply not use it.


/Benny

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