I'm trying to acquire cache flow data from a Cisco 6509 router with the following command via a telnet session: 
@data = $tnet->cmd('show ip cache flow');

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This works fine on the inner routers within the network, since there is a manageable amount of data. On the routers that border the network, this command times out since there is too much data to process. I'm trying to find a way to run this command for a certain time period. For example: 
until (5 seconds pass) {
@data = $tnet->cmd('show ip cache flow');
}

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I've been unsucessful in implementing this with the sleep command, probably due to my inexperience with Perl. Any help or suggestions are appreciated.

In reply to How to break while reading data from a Cisco router? by Newb to Perl

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