Cannot telnet the virtual server address, but can ping it
CSM card on Cat6500 switch
VLAN 310 has the server connected directly. VLAN 253 is the client side. Only one real server in the server farm(for testing).
My problem is the clients can ping the virtual address 126.96.36.199, but they cannot telnet or ftp innto the server. The telnet, ftp services are running in the server and are verified. Checking with analyzer it was found that the client send TCP_SYN to the virtual server, but the virtual server donot reply with a SYN_ACK.
I have the command virtual 188.8.131.52 tcp 0, which means that all tcp ports are allowed. I also tried with specific port like 23 for telnet, but same issue.
Re: Cannot telnet the virtual server address, but can ping it
It looks like you need an "alias IP address" on the server vlan. The CSM needs the address you already have there to route packets internally on the backplane. It also needs another one that the servers can use for a default gateway.
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