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When sniffing a network using sniffer pro (laptop edition) you will always lose your connection to the network unless you have 2 network cards in the laptop. Using Sniffer distributed allows you to remain connected to the network. This is because it has 2 network cards, 1 setup as a dedicated...

Thanks John, It turned out to be a dodgy switch trying to become the base switch. Unfortunately release 4 of the firmware took down the whole stack when this happened. After back-revving to 3.1 the redundant feature worked and only the affected switch failed. We replaced the switch with a new...

Installed a five switch stack using 450s on the weekend. All appeared ok. This morning the stack has dropped out twice with the base lights flashing on the switches. It has the latest firmware on. Any ideas ? Its a live environment with 80 servers in the stack !!!

I have a 2 Stacks of 4 450 24p switches numbered 1-4 with the base unit being 1. They are cascaded using MDA modules to produce a redundant cascade. The base unit has a 1000LR fibre port with both a live fibre link to another computer room and a diverse fibre in the failover port. My problem...

If the switches are in the same cabinet use an MDA cable. Daisy chaining switches using UTP should be avoided if possible. The difference in speed should be enough to swing it. 2.6gbps compared to 100mbps.

Hi, Does anyone know what program uses the TCPIP network blackjack protocol on port 1025 ? I have a fair amount of this traffic running over my WAN at the moment. Thanks

Select tools, options and click the protocols tab. Scroll down and you can add protocol name and ports numbers from there. You will need to close sniffer and reopen for them to take effect. A comprehensive list of IP port numbers found at the following site...

Thanks, I'll ignore them for now. Dave

I had a similar problem with version 4.5 on NT4. It happens when I filtered the capture and then tried to close the capture when in the decode screen. Its a known fault with sniffer thanks to Spence. To kill of the process use "kill -f PIDno" from the NT resource kit. It usually but...

Hi, When running a capture i seem to get an inordinate amount of "WINS No Response" reported in the expert. I know the WINS servers are functioning correctly. Also in the object field it always appears as 11.21.13.125 11.21.255.255. Im guessing that its broadcast traffic that can be...