Hello,
I'm having some really bad network latency issues on my LAN. Pings to my gateway (sonicwall 4500) and to my switches (NetGear GSM7352Sv2) are pinging >1ms then jump every few to hundreds and timeout every so often.
I've been checking my port statistics and no ports look overly active. I have RSTP enabled on my switches (we have 7 switches in a single stack, plus 3 few linksys switches patched into the stack). We have a pretty complex network as well. I'll find my network diagram and upload it momentarily.
Also, it seems like this began to get really bad when I installed the SonicWall last week (we had a Pro3060 that bit the dust on me). I'm doing a packet capture also to look for any machines that may be acting up.
here's my ping return, pinging the stack:
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=6ms TTL=64
Reply from 192.168.14.10: bytes=32 time=5ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=4ms TTL=64
Reply from 192.168.14.10: bytes=32 time=4ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=16ms TTL=64
Reply from 192.168.14.10: bytes=32 time=9ms TTL=64
Reply from 192.168.14.10: bytes=32 time=3ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=17ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=31ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=188ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=24ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=10ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=14ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=3ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=3ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=8ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=2ms TTL=64
Reply from 192.168.14.10: bytes=32 time=1ms TTL=64
Reply from 192.168.14.10: bytes=32 time=163ms TTL=64
Reply from 192.168.14.10: bytes=32 time=30ms TTL=64
Any suggestions
traceroute or tracert to this 192.168.0.6 ( i assume this is your sonicwall - is it right?)
also you can try using http://www.wireshark.org/download.html and do tracert to 192.168.0.6 from windows cmd on computer before 7 switch stack and after - should give you some ideas
also try pinging different ip ports those stacked switches - can you check bridge priority on different switches - your 7 stacked one should have lowest and any other should have much higher.
you can also try ping -t 192.168.0.6 and switch off all other switches and try connecting them gradually to see when you get rstp flapping.