| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
Hi,
We have a customer which is trying to set up primary/backup links
between two segments using Lan Bridge 200 and DECswitch 900EE.
We are not 100% sure if IEEE802.1 Spanningtree is used in every other
bridge/Switch in the customers network, but we are going to check it.
If we think about the mentioned network configuration it seems to me
problem free. Ay comments or good ideas to troubleshoot this kind of
problem?
Thanks, Risto
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 2371.1 | Try HUBwatch, and IRIS !! | MSDOA::REED | John Reed @CBO = Network Services | Thu Jun 15 1995 00:33 | 10 |
Use HUBwatch, and look at the Spanning Tree Mode of the DECswitch 900,
and see if it keeps toggling, DEC to IEEE, or changing roots.
Also, install IRIS on a PC, and look for Bridge Spanning Tree packets.
You should only have ONE (1) spanning Tree running. I have seen up to
FOUR different spannning trees running at a customer site. (That
network was on it's knees...)
JR
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| 2371.2 | NETCAD::ANIL | Wed Jun 21 1995 13:30 | 10 | ||
The LB200 is in the "STP Auto-select" mode by default, while the
DECswitch products are in IEEE 802.1 mode by default. This has
an effect only on the situation where there is one or more LB100,
or non-Digital products trying to emulate LB100 (aka "dec spanning
tree"). The auto-select mode automatically switches to the LB100
STP, while the 802.1 mode treats LB100 hellos like any other
multicast. In your situation, this is not a consideration since
you don't seem to have LB100's in the network.
Anil
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