Does LocalDirector detects bridge loop and corresponds it automatically ?
I have the question about LocalDirector (LD).
I understand LocalDirector had already got EOL, however my customer has plan to migrate LocalDirector to CSS and I have to explain technical thing of current (with LD) environment and future (with CSS) environment.
So I posted this question to this forum.
My question is as follows.
Catalyst ---- Catalyst
Catalyst ---- Catalyst
LD1 and LD2 are LocalDirector 430 Version 4.2.3.
STP runs on all Catalyst switches.
All ports on all Catalyst connecting LD are not configured as "portfast".
In this environment "no secure" is configured for all interfaces on LD.
I personally think "no secure" means that BPDU is passed through LD and result in getting one port to be BLOCKING port on any Catalyst switch.
However all ports on four Catalyst switches connecting LD are working as FORWARDING and not BLOCKING.
I am confusing why no exist BLOCKING port in spite of "no secure" configured on LD.
Documentation on CCO below said "LocalDirector automatically detects a bridge loop and tries to recover."
I do not understand what "LocalDirector automatically detects a bridge loop and tries to recover. " mean, but it seems LD detects bridge loop and corresponds it automatically by, for example, stopping BPDU from passing through even if "no secure" configured.
Does anyone have similar experience ?
When I migrate LD to CSS on same environment, I will disable STP on CSS to prevent bridge loop.
Re: Does LocalDirector detects bridge loop and corresponds it au
In terms of bpdu on the LD. You are correct in terms of the secure mode. Switch BPDU packets pass right through the LocalDirector unless interfaces are secured. BPDU's are only forwarded across the LD when the same VLAN exists on both sides of the Local Director. While this will work so long as either of the interfaces connecting to the switches contains the same VLAN, it is not a recommended configuration in dual LocalDirector situations. The VLANs may not reconverge in the case of LocalDirector failover, as the port identified for passing BPDU's is also changed at the time of failover.
In regards to the CSS and spanning tree. You will not disable spanning tree on the CSS but we do have many customers set the bridge priority quite high so as to not have the CSS be the root bridge. In general, the LD is a bridge and the CSS is a switch with some routing capabilities.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
==================== VIC FNIC driver does not support Virtual Volumes (
second level LUN ID ) An enhancement request has been created to track
this feature - CSCux64473 UPDATE - 12-14-2016 We made some traction on
the enhancement request - The Fix is in t...