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I have an environment that is a typical hub and spoke LAN topology i.e. multiple access switches all connecting back to the collapsed backbone/core. The core is the Layer 3 gateway for the various VLANs, and all access switches are merely layer 2 ext...
I am working on a network that is majority HP Comware switches running MST instance 0 for all VLANs. I have approx 12 Cisco switches also running in MST spanning-tree instance 0 configuration for all VLANs. The Root bridge on the Cisco switches are t...
We are running a UC500 and I see that after some time the avail mem reduces. After a reload, the avail memory sits at about 22%, but after a about 2 weeks it gets to about 12% avail. We have had a few unknown system restarts, and when looking at the ...
We have a UC540 and I have been trying to get CallerID blocking on a call-by-call basis. From what I have reviewed online, the "caller-id block code *9" under "telephony-service" should provide my callers the ability to dial "*9" and then the outside...
I have an intersting scenario whereby a select few extensions require a different state area code applied when dialing that specific regions local numbers.So to explain that further, these select few extensions are virtualy located in state 02xxxx xx...
No, I have never been to that side of the globe, but it has always been on my radar. So on day when I find myself there I will certainly let you know and I will buy you a beer in appreciation for your assistance.Until then.Brian
Peter, just an update on this. I made the changes and applied it to the physical interfaces of the Cisco switches. It successfully blocked PVST packets and ultimately ensured that PVSTSIM did not activate. I moved them all into MST mode (one by one) ...
Thanks Peter, and I completely agree with you. No one should be able to simply plug a switch into the network without being correctly authorized and/or configured. Although not probable, this is however still possible. And 4 years down the track, som...
Yes, it certainly seems that this "helpful" feature on the Cisco's is causing a serious issue/vulnerability. The HP core comprises of 2x HP 7506 switches in an IRF "virtual stack" configuration running Comware OS. I am surprised that I have stumbled ...
Thanks Peter, your analysis of this problem is spot on. I would like to thank you for looking into this and providing me your thoughts as it has had me baffled for sometime. Looking at your proposed suggestions to solve this; I can almost be certain ...
