help with tcpdump command please.

["Rob McWilliam" <RMcWilliam () it aberdeen net uk>]

sirs,
I am having the following problem when I submit this command on my 
IPSO 3.7 Nokia firewall.

ROB#tcpdump -i eth-s1p2c0: src host 193.122.22.247 dst host 
192.168.20.14 and icmp -w /tmp/dumpdatain <CR>
ROB#tcpdump: parse error

Any help would be gratefully received.

Rob Mcwilliam.

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