Xshell - Highlight Sets Cisco Best 'link'

Security/ACL/NAT

Xshell uses Perl-compatible regex (PCRE). The "best" set is not a dump of 200 keywords—it is a curated arsenal. Here are the non-negotiable patterns:

Download the template rules from this article, import them into Xshell, and run show log on your nearest Catalyst switch. You’ll see the difference immediately.

| Pattern | Color | Example | |---------|-------|---------| | % (at line start) | | %LINK-3-UPDOWN | | Error | Red | Error: Invalid input | | failed / denied | Dark Red | Permission denied | | Down | Red Bold | Gig0/1 is down |