Will PAT round robin?

[PATRICK ALAND]

Given the following globals

global (outside) 1 192.168.1.1 netmask 255.255.255.255

global (outside) 1 192.168.2.1 netmask 255.255.255.255

global (outside) 1 192.168.3.1 netmask 255.255.255.255

global (outside) 1 192.168.4.1 netmask 255.255.255.255

Will the PIX round robin PAT between the 4 addresses or will it only move on to the next address after the PAT range has been exhausted on the preceeding address.

The cisco docs say that the pix won't move on to PAT until a NAT space is exhausted but I don't see anything about something like this.

Any help (and documentation if possible) is appreciated.

Thanks

[nkhawaja]

I think it is not Round Robin. Hence PAT will try to use first IP address, first.

[scoclayton]

The PIX will use the first address until all of the possible translations (~64K total) have been used and then it will roll-over to the 2nd one. However, you will run out of memory on the PIX before the roll-over occurs so more than 1 PAT address is probably a waste of address space.

Scott