Our Dell Powerconnect 62xx switches have a very high packetloss on the management interface. I presume this is caused by a new appliance which uses multicast for communication but I am not sure.
Our network setup is following:
servers a -> Dell PC6248 |
servers b -> Dell PC6248 |-> juniper core router
servers c -> Dell PC6248 |
What we see is that the multicast traffic arrives at all servers (but only the servers b use the multicast) and I fear that this multicast traffic floods the switch management interface.
The switches' management interfaces are reachable via vlan101, all other traffic is sent over other vlans. When I tcpdump on one of the 2 servers with a vlan 101 ip address, I only get a few arp requests but almost nothing. When I try to ping between these 2 servers, it works like a charm.
I would like to know what a good way is to troubleshoot this problem and maybe help me understand what is going wrong on that subnet.