Cisco

N9K-C93180YC-FX3 Transceiver Compatibility

Interfaces & Modules Updated Jul 12, 2026

Cisco Nexus 93180YC-FX3 Transceiver Compatibility Guide (N9K-C93180YC-FX3)

A socket that accepts a module is not a switch that supports it. An optic earns its line in an...

Interfaces & Modules Updated Jul 12, 2026

GLC-T vs GLC-TE vs SFP-GE-T: Which Cisco Copper SFP to Buy

GLC-T, GLC-TE, and SFP-GE-T are electrically the same module — a 1000BASE-T copper SFP running 1 Gbps over Category 5...

Routers Updated Jul 8, 2026

Cisco Catalyst 8300/8200 Expansion Modules: Which Card Adds Ports, Voice, and 5G?

On a Cisco Catalyst 8300 or 8200, every capability maps to one module family in one slot type: Catalyst 8300...

Routers Updated Jul 5, 2026

Cisco Router Throughput Explained: CEF, IPsec, and SD-WAN IPsec

Cisco router performance is a set of parameters, not one number. A datasheet reports CEF (IP forwarding) throughput for plain...

Routers Updated Jun 30, 2026

Cisco Catalyst 8500 vs ASR 1000 and 8500L: Enterprise Edge Router Selection

A practical selection guide for Cisco Catalyst 8500 Series Edge Platforms — choosing between C8500-12X4QC, C8500-12X, and C8500L-8S4X, and comparing...

Switches Updated Jun 30, 2026

Cisco Catalyst 9000 Series Switches: The Complete 2026 Guide

Everything you need to evaluate, compare, and select the right Catalyst 9000 switch — from the entry-level 9200 to the...

Switches Updated Jun 28, 2026

Cisco Catalyst IE9300 Rugged Series Guide: Models, PoE, Licensing & SFP

The Cisco Catalyst IE9300 Rugged Series is a family of eight hardened, stackable rackmount switches that bring Cisco IOS XE...

Switches Updated Jun 15, 2026

How to Read Cisco Switch Port Numbers: Interface Numbering Explained

A Cisco switch port name like GigabitEthernet1/0/1 reads as an interface type followed by three numbers — stack member / module / port....

Cisco Equipment Guide Updated Jun 13, 2026

What Is Cisco ISE? Identity Services Engine Explained for NAC and Zero Trust

Cisco ISE (Identity Services Engine) is Cisco’s network access control (NAC) and policy platform. It authenticates users and devices, checks...

Network Updated Jun 10, 2026

What Is an SFP Port on a Switch?

An SFP port is a modular slot on a network switch that accepts a small, hot-swappable transceiver module. The port...

Routers Updated Jun 9, 2026

Best Cisco Routers for Business Networks in 2026

For most businesses in 2026, the best Cisco router comes down to branch size and whether you run SD-WAN. The...

Network Updated Jul 8, 2026

Cisco Industrial Ring Redundancy: REP vs MRP vs PRP vs HSR vs DLR

Five protocols cover ring and parallel redundancy on Cisco industrial switches: REP (Cisco-proprietary ring convergence), MRP (the IEC 62439-2 ring...