swoop
New User
Oct 30, 2009, 6:31 AM
Post #1 of 1
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Telnet.pm and Cisco.pm not populating array with full contents
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I wrote a script that logs into a Cisco router then issues the 'show log' command. The log is very large. So I tried to set the max_buffer_length which Cisco.pm and Telnet.pm was not taking. So I then modified Telnet.pm maxbufsize with 8mb. Still the entire 'show log' contents are not extracted completely. The @output array only extracts about halft the log. Enabling the Dump_log and Input_log does not show details what the problem is. I believe it is a problem with either Telnet.pm or Cisco.pm and some sort of buffering issue. Can someone lend a tip? Below is a snippet of the script:
#!/usr/bin/perl
use Net::Telnet::Cisco;
$username = "cisco";
$password = "cisco";
$enable_password = "cisco";
$zero_screen = "term len 0";
sub scan_log {
my $cmd = "show log";
my @output;
my $previous;
@output = $session->cmd("$cmd"); <<<<<<<<<<<<<<<<<<
foreach my $line (@output) {
chomp($line);
if ($line =~ /Trace/) {
print "TRACEBACK MSG: $previous\n";
print "TRACEBACK: $line\n";
} else {
$previous = $line;
}
}
}
sub node_login {
my ($node_log) = @_;
my $buffer_mb = 1024 * 1024;
print "Logging into node: $node ...\n";
# Login to node
$session = Net::Telnet::Cisco->new(Host => $node,
Timeout => $node_timeout,
Prompt => $prompt);
#Dump_Log => "dump.log",
#Output_Log => "commands_run.log",
#Input_log => $node_log);
$session->send_wakeup;
$session->login("$username", "$password");
$session->enable($enable_password);
$session->max_buffer_length(5 * $buffer_mb);
$session->cmd($zero_screen);
}
$node = "router1";
node_login($node_log);
scan_log();
exit;
(This post was edited by swoop on Oct 30, 2009, 6:52 AM)
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