[f-nsp] Rapid Spanning Tree too slow (like ordinary -not rapid -stp)

[Jared Valentine]

Gunther:

I'd recommend 802.1w, as it's industry-standard for rapid spanning tree.  

Did you set "admin-pt2pt-mac" on switch-to-switch links?  Without that,
RSTP/802.1w will act more like regular spanning-tree.

interface ethernet 4/1
 spanning-tree 802-1w admin-pt2pt-mac

You'll need to apply that to both links on both switches.  With this in
place I see sub-second failover.  

-Jared

-----Original Message-----
From: foundry-nsp-bounces at puck.nether.net
[mailto:foundry-nsp-bounces at puck.nether.net] On Behalf Of Gunther Stammwitz
Sent: Tuesday, June 24, 2008 12:05 PM
To: foundry-nsp at puck.nether.net
Subject: [f-nsp] Rapid Spanning Tree too slow (like ordinary -not rapid
-stp)

My config is looking like this:
vlan 503 name FRA3-FCS by port
 tagged ethe 49 to 50
 untagged ethe 4
 spanning-tree rstp
 spanning-tree rstp priority 0


I've already tried to use "spanning tree 802-1w" instead of rstp which
didn't help.

this behavior can be seen on bigirons and netirons using jetcore/M4 and
irconcore/M3 as well as on the FI4802-switch on the router and the
switch-codetrees.



Is anyone else seeing the same problem? How can one fix it?


thx,
Gunther


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