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标签：cisco

Cisco EEM Applets: Automate with event syslog Triggers

Cisco EEM Applets: Automate with event syslog Triggers

Automate Cisco IOS responses with Embedded Event Manager applets: syslog, SNMP and timer triggers, CLI actions, alerting, testing and production-safe

admin admin 2026-09-04
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Cisco IP Helper-Address: DHCP Relay Configuration

Cisco IP Helper-Address: DHCP Relay Configuration

Cisco IOS DHCP relay with ip helper-address: forward client broadcasts to a central DHCP server across VLANs, add multiple servers and verify the rela

admin admin 2026-09-04
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Cisco DHCP Snooping: Trusted and Untrusted Ports

Cisco DHCP Snooping: Trusted and Untrusted Ports

Cisco DHCP snooping: enable it per VLAN, trust server ports, rate-limit starvation floods, persist the binding database and verify with show commands.

admin admin 2026-09-04
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Cisco Voice VLAN Setup for IP Phones (Auxiliary VLAN)

Cisco Voice VLAN Setup for IP Phones (Auxiliary VLAN)

Configure the Cisco voice VLAN on Catalyst access ports: switchport voice vlan modes, QoS trust, LLDP-MED, uplink trunks and phone registration troubl

admin admin 2026-09-04
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Cisco HSRP Configuration: Priority, Preempt and Track

Cisco HSRP Configuration: Priority, Preempt and Track

Configure Cisco HSRP with standby priority, preempt and object tracking: a full two-router example, failover behaviour and the show standby output to

admin admin 2026-09-04
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Cisco IOS XR BGP Configuration: iBGP and eBGP Step by Step

Cisco IOS XR BGP Configuration: iBGP and eBGP Step by Step

Configure BGP on Cisco IOS XR step by step: the mandatory address-family requirement, iBGP and eBGP examples, route policies, neighbor groups and veri

admin admin 2026-09-04
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Cisco ASR 9000 Show Commands: version, platform and install

Cisco ASR 9000 Show Commands: version, platform and install

Cisco ASR 9000 IOS XR show-command run book: show version, show platform, show install active vs committed, FPD checks, redundancy and admin scope.

admin admin 2026-09-03
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Cisco PortFast, BPDU Guard and Root Guard Explained

Cisco PortFast, BPDU Guard and Root Guard Explained

Configure and verify Cisco PortFast, BPDU Guard, Root Guard and Loop Guard on Catalyst switches: IOS CLI examples, err-disable recovery, log checks.

admin admin 2026-09-03
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Cisco vs Arista Switches: Architecture and CLI Compared

Cisco vs Arista Switches: Architecture and CLI Compared

Cisco vs Arista architecture: EOS SysDB agents against the monolithic IOS-XE and NX-OS control plane, plus CLI, VLAN, STP and automation.

admin admin 2026-09-03
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Catalyst 9300 StackWise: 320, 480 and 1T Bandwidth Explained

Catalyst 9300 StackWise: 320, 480 and 1T Bandwidth Explained

Catalyst 9300 StackWise decoded: StackWise-320 vs 480 vs 1T, ring maths, SRP doubling, uplink sizing and how to verify the stack.

admin admin 2026-09-03
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