I've written a program that tests ISDN dial backup at 1,000 locations. I've
broken up the logic into server functions within a threading class (i.e.
logon, get interfaces, get dial string, etc.). At 999 locations, the
following code extract the first of three dial strings:
def GetDialString(self):
""" This function extracts the dial string."""
self.tn.write("term len 0\n")
self.tn.expect([self.host.upper() + "#"], 7)
self.tn.write("sh dialer | i Default\n")
self.data = self.tn.read_until(self.host.upper() + "#", 7)
print self.data
match = re.search("\d\d\d\d\d\d\d\d\d\d\d+", self.data)
if match is not None:
rc = match.group()
else:
rc = "missing"
return rc
One location doesn't return it's dial string. In Idle, the output is:
print data
sh dialer | i Default
17002111000 1 0 8w2d successful Default
17002111002 0 0 never - Default
17002111001 1 0 never - Default
J07MR3640#
The "print data" statement yields:
term len 0
J07MR3640#
I've run a packet capture and I see the data coming back every time. I don't
understand why it works fine for 999 out of 1,000 locations. Any
suggestions?
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