is a powerful SSH terminal emulator widely used by network engineers to manage Cisco devices. One of its most effective features for Cisco environments is Highlight Sets xshell highlight sets cisco best

Create a New Language Profile: Within the Language settings, look for an option to create a new profile. Name it something descriptive, like "Cisco IOS". Connect to any Cisco device (router, switch, or CSR1000v)

| Category | Regex Example | Highlight Color | Why It Matters | | :--- | :--- | :--- | :--- | | Syslog Severity 0-2 | %EMERG-%SYS-%ALERT-%CRIT | Bold Red on Black | Catastrophic failure (power, crash). | | Syslog Severity 3-4 | %ERR-%SYS-%3-%4 | Red | Routing flaps, authentication fails. | | Interface State Down | (Down\|down\|DOWN).*(line protocol\|LINK)" | Red | Immediate layer-1/2 failure. | | Interface Up | (Up\|up\|UP).*(line protocol\|LINK) | Green | Service restoration. | | Interface Names | \b(?:GigabitEthernet\|FastEthernet\|TenGigabitEthernet\|Port-channel\|Loopback\|Vlan)\d+[/.]?\d* | Cyan | Scanning for impacted ports. | | IP Addresses | \b(?:\d1,3\.)3\d1,3\b | Yellow | Prevents misconfiguring a neighbor IP. | | Configuration Mode | (config)\S*# | Bold White | Know at a glance if you’re in global vs interface config. | Connect to any Cisco device (router

Adding a New Language (Cisco) Manually:

If Cisco isn't listed, you might need to manually add it:

Test Your New Highlight Set

1. Connect to any Cisco device (router, switch, or CSR1000v).
2. Run show running-config or intentionally type show ip interfe to trigger an error.
3. Watch the colors appear.

That process—not the file itself—is what makes a highlight set "best." Xshell gives you the canvas. Cisco gives you the chaos. Your regex gives you control.