What Is an Uplink Port on a Switch?
An uplink port is the switch port that connects “up” to the next device in the network hierarchy — a...
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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...
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...
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...
Cisco IE Switch PoE Not Working: Industrial Troubleshooting Guide
When a Cisco Industrial Ethernet (IE) switch powers on but delivers no PoE, the cause is usually the power input,...
Cisco IE4000 and IE4010 Replacement: EOL Dates and Migration Paths
The Cisco Industrial Ethernet 4000 and 4010 Series are both end-of-life, on different timelines and with different replacements. The IE4000’s...
CW9800 vs C9800: Key Differences, Model Mapping, and Which to Buy
The main difference is generation: the CW9800 is Cisco’s next-generation wireless controller line — the “CW” stands for Catalyst Wireless...
Cisco IE2000 Replacement: EOL Status and the IE3100 Upgrade Path
The Cisco Industrial Ethernet 2000 Series is end-of-life. Cisco’s last day to order was July 26, 2024, and the last...
Cisco IE3300 Switch Buying Guide: Models and BOM Checklist
Cisco IE3300 selection starts with the cabinet role. Use IE-3300-8T2S for non-PoE industrial access with 1G SFP uplinks, IE-3300-8P2S for PoE/PoE+ access with 1G...
C9300 Switch Reset to Factory: Keep IOS and Clear Config
For most C9300 switch reset-to-factory jobs, use write erase, delete flash:vlan.dat when VLAN database cleanup is required, and reload without saving the current...
Catalyst 9300 Password Recovery Guide: Recover Without Losing Config
Recovering a Catalyst 9300 password is usually a configuration-preserving IOS XE procedure, not a factory reset. Connect through the console,...
How to Enable PoE on Cisco Switch: CLI Commands and Checks
On most Cisco Catalyst PoE switches, PoE is already enabled by default on PoE-capable ports. To explicitly enable or re-enable...
Cisco ASA Password Recovery 2026: Firepower 1010, 2100, 3100, 4100, and 4200
Cisco Firepower and Secure Firewall platforms do not all use the same ASA password recovery process. On newer platforms, the...
Default VLAN vs Native VLAN: Cisco Differences and Examples
The default VLAN is the VLAN a switch uses for ports before you assign them to another VLAN. On Cisco...
How to Check SFP Type and Find a Port by MAC Address on a Cisco Switch
Use show inventory to identify the exact Cisco SFP PID and serial number, show interfaces transceiver or show interfaces transceiver...
Cisco IE3300 vs IE3400: Differences, Features, and Which to Buy
Cisco IE3300 and IE3400 switches are both rugged Cisco Catalyst industrial Ethernet platforms, but they are usually selected for different...
Router vs Firewall vs Switch: Who Controls Traffic, Access, and Security?
Most business networks don’t fail because a router, switch, or firewall is “bad.” They fail because the wrong device was...
Hardware Firewall vs Software Firewall: Differences, Costs, and How to Choose (2026 Buyer’s Guide)
A hardware firewall is a dedicated physical appliance that protects an entire network at the perimeter, typically delivering 1 to...
Top Cisco Competitors and Alternatives for Enterprise Networks in 2026
Quick answer: The main Cisco competitors are Arista, HPE Aruba Networking, Juniper, Fortinet, Extreme Networks, Ubiquiti, Dell Networking, and NETGEAR....
C9300-48P-A vs C9300-48U-A vs C9300-48UXM-A: PoE+, UPOE, and mGig Buying Guide
C9300-48P-A, C9300-48U-A, and C9300-48UXM-A are three 48-port Cisco Catalyst 9300 access switches with Network Advantage licensing, modular uplinks, and StackWise-480...
C9200-NM-4X vs C9200-NM-4G: Cisco Catalyst 9200 Uplink Module Guide
C9200-NM-4G is a 4-port 1G uplink module for Cisco Catalyst 9200 switches. C9200-NM-4X is a 4-port 1G/10G uplink module, making...
C9300L-48PF-4X-E vs C9300L-48P-4X-E: 890W vs 505W PoE Compared (2026)
C9300L-48PF-4X-E and C9300L-48P-4X-E are both Cisco Catalyst 9300L 48-port 1G PoE+ access switches with four fixed 10G/1G SFP+ uplinks, StackWise-320...
Cisco N9K-C93108TC vs N9K-C93180YC: FX3, FX3P, EX and FX Model Comparison
Choose N9K-C93108TC-FX3 if you need copper BASE-T downlinks without PoE. Choose N9K-C93108TC-FX3P if you need copper downlinks with PoE. Choose...
NXOS-AD-XF Perpetual License: Availability, Options, and How to Buy
Quick answer: Cisco’s current licensing guide still lists NXOS-AD-XF as the perpetual NX-OS Advantage license for supported XF-class fixed Nexus 9000 platforms. If...
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