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Community Member

Catalyst 3750G Problem

i've 2 Catalyst's 3750G in stack in core of the network.

i connected PC with Sniffer to one of the port and can see traffic from all others ports - ISA server connected to other port and i can see requests to ISA server from all clients PCs.

How to explain it and fix it?

Community Member

Re: Catalyst 3750G Problem

Sond like all the ports are in the same VLAN. If this is the case. You will see all broadcast that are sent ou on that vlan. That is why you are seeing all the traffic.

Community Member

Re: Catalyst 3750G Problem

Further investigation gave more detailed information. We have Microsoft cluster consisted of 2 servers which connected to 2 ports. They have one mac-address and that mac-address is absent in mac-address-table. I tryed to add static entries to table -

arp 02bf.0a14.0001 ARPA GigabitEthernet2/0/20

arp 02bf.0a14.0001 ARPA GigabitEthernet2/0/11

But it didn't help...

How to resolve it?

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