Daily Network Device Inspection Command Reference for Cisco & H3C Hardware
Cisco Catalyst & Integrated Services Router Checks
Core System & Inventory Overview
transport preferred ssh
terminal no length
display running-config! Displays full active device configuration
show inventory! Displays system diagnostic details
show module status
show env temp
show env fan
show env power
show processes cpu sorted 1min
sh ...
Posted on Fri, 18 Sep 2026 16:39:49 +0000 by jkohns
Port Mirroring Technology: A Comprehensive Guide
Understanding Port Mirroring
Port mirroring, also known as SPAN (Switched Port Analyzer), is a network monitoring technique that allows network administrators to copy traffic from one or more source ports to a destination port for analysis. This feature is essential for network troubleshooting, security monitoring, and performance analysis.
The ...
Posted on Fri, 21 Aug 2026 16:52:57 +0000 by harty83
Implementing Port Aggregation in Cisco Packet Tracer
Port aggregation, also known as Ethernet Channel, is a technique that combines multiple physical switch ports into a single logical connection. This method provides several advantages when connecting switches:
Key Benefits
Increased Bandwidth: The total bandwidth equals the sum of all aggregated ports
Enhanced Redundancy: The connection remain ...
Posted on Mon, 06 Jul 2026 17:31:53 +0000 by nogginj
Configuring Cisco Discovery Protocol on Network Devices
1. Learning Objectives
This configuration exercise covers:
Understanding CDP protocol characteristics
CDP configuration and troubleshooting techniques
Viewing directly connected neighbor information via CDP
2. Network Topology
The laboratory topology for CDP configuration is illustrated below.
3. Configuration Steps
(1) Configure RouterA
Rout ...
Posted on Thu, 14 May 2026 07:18:37 +0000 by bweekly
Using ACLs for Traffic Filtering on Cisco, Huawei, and H3C Devices
An Access Control List (ACL) consists of multiple entries, each called a Access Control Entry (ACE). ACEs are evaluated in ascending order based on their sequence numbers (default starting at 5, stepping by 5). The first match is applied immediately, and no further evaluation occurs.
Cisco ACLs implicitly deny all traffic at the end. In contras ...
Posted on Fri, 08 May 2026 20:14:12 +0000 by Buttero