I am having a weird problem which I just can not seen to figure out. Basically I seem to have some kind of loop, either routing or switching, which I can not seem to locate. Part of the problem is this environment is fairly messy, but I am going to try and explain it the best I can and hopefully someone will know what is going on. Here is the basic network diagram:
T1->3Com Router->Sonicwall->3Com Switch->Proxim Wirelessx3->Proxim Wirelessx3->Various switches
These Proxim wireless are wireless point to point antennas that we are using in place of point to point T1 lines. Basically each set of antennas functions as a router. So the x3 means I have three of these, each going to another location, 4 in total.
Off of the 3Com switch in the main location, there are about 3-4 daisy chained 24 port switches. I went around and checked these for loops and I was not able to find any. Every daisy chained switch lost connectivity to the main switch when I unplugged one cable.
The main network is 192.168.1.0/24.
The three remote networks are 192.168.2.0/24, 192.168.3.0/24 and 192.168.4.0/24.
The Sonicwall, servers, a few workstations and the Proxims are all plugged into the main 3Com switch.
Basic pinging is my first problem. I am losing packets occasionally whether I am just pinging two devices on the 192.168.1.0 network or pinging across to the remote networks.
The most bizarre sympton of all is one of the servers I have plugged into the 3com switch will trigger a huge loop when I shut it off. I am not sure if any device connected to that switch will do this, but I know this one server consistently does it. I was pinging this server when I shut it down and running a packet sniffer and I suddenly got thousands of ping requests back to me and I could not communicate with anything on the network temporarily.
I can give a lot more detail on this if it is necessary but I want to know if anyone has any ideas and how to figure out what kind of loop this is? Thank you for taking a look!