On (2015-03-12 01:12 +0000), Mack McBride wrote: Hey,
> The junos expression in question DOES NOT involve backtracking. > After a match there is no need to backtrack. > > The expression in question goes character by character excluding the 64500. > Note the last part matches 6 digit ASNs that start with 64500. I think we miscommunicated. Originally I explained IOS does not work, because it does backtracking, not talking about JunOS at all. Then you mentioned that particular JunOS example does not do backtracking, which I understood you claiming JunOS does not support backtracking at all So to summarize, both IOS and JunOS do backtracking, and it cannot be turned off. But indeed, ^64500+ [^64500] does not require backtracking, 64500+ never needs to be unconsumed to satisfy the [^64500] -- ++ytti _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
