[e-nsp] STP

[Luiz Júnior]

Hi guys,


I am having a hard time configuring STP on Extreme Switches properly, and I
really appreciate some help.

I have already 26 switches in my Network, at my Core layer a BD8810, and at
the access layer I have some Summit 450, 460 and 200. The thing is the
switches are not configured properly, the VLANs are configured only on
BD8810, and at the access layer, all switches are in VLAN Default, it works
but I am trying to optimize the network and made things work properly.

Moreover, I am adding to my network a new Core Switch BD8810, but to get
started I am only connecting a few switches from the access layer to the
this new one, and connect it with the core - in other words, I am only
creating a redundant path to the Old BD8810.

Anyway, I have tried to follow extreme networks guides and white papers,
however, I am still not getting things right. I couldn't understand how
STPD works, I've tried to create and add some vlans to it, but many errors
have appeared, as such: Error: Please configure a stpd dot1q tag first, or
you can't add this VLAN or port to SPTD and so on. And as a matter of fact,
once I have configured a new SPTD on my BD8810 and on my Summit 200, the
problem is that each one has itself as the root bridge, although the trunk
port was working and the Summit has full connection to the network. At this
stage, I want to my Old BD8810 be the root bridge for all VLANs.

So, how could I configure on a switch a new STPD (With a new one, I am
expecting not to made a mess on my network), with a new Carrier VLAN
(I think this is a sort of Native vlan, right?)  and add new vlans to it,
and also old vlans that it belongs to a other STPD (e.g. s0), inside a
trunk port.

Well, the physical topology looks like this:

                                         -------------------------   Old
STPD      --------------------
                                         -   OLD BD8810   -
-------------------  SUMMIT 460

-------------------------                         --------------------
                                      \                                   /
(trunk - New STPD)     \                                         /
(trunk - New STPD)

\                                               /
               ----------------------
----------------------------
               -  SUMMIT 200 -  ---------------------------- -     NEW
BD8810    -
               ----------------------    (trunk - New STPD)
----------------------------


thank you,

Luiz Jr.
CCNA, CCNP R&S
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