The Cisco Catalyst 2960-48TC-L is a 48-port Fast Ethernet switch with 2 dual-purpose uplinks and the LAN Base image, and it sources no Power over Ethernet at all. Each dual-purpose uplink holds one 10/100/1000 copper port and one SFP slot, but only one of the two is active at any moment, consequently the switch offers two uplink paths in total rather than the four it appears to.
Two uplinks that look like four
Cisco's description of the uplink arrangement on this generation is precise and easy to misread: two dual-purpose uplinks, each with one 10/100/1000 Ethernet port and one SFP-based Gigabit Ethernet port, with one port active. Four physical connectors are present on the chassis. Two of them can carry traffic at any given time.
The consequence is a design one rather than a performance one. A topology that assumes four uplinks from this switch, whether for bandwidth or for path diversity, will not work as drawn. Two paths is the ceiling, and the choice within each pair is between copper and fibre rather than between using both. Anyone specifying this model into a resilient design needs that fact before the rack diagram is signed off, not after.
| Specification | Catalyst 2960-48TC-L |
|---|---|
| Access ports | 48 x 10/100 Fast Ethernet |
| Power over Ethernet | None |
| Uplinks | 2 dual-purpose, one port active per pair |
| Uplink options per pair | 1 x 10/100/1000 copper or 1 x SFP |
| Simultaneous uplink paths | 2 |
| Software image | LAN Base |
| Switching layer | Layer 2 |
| Cisco end-of-life notice | EOL9449 |
What the dual-purpose design buys
The arrangement exists to give one switch two different installation options without two part numbers. A closet with fibre to the distribution layer populates the SFP side; a closet with structured copper populates the copper side; a site that moves from one to the other later swaps the transceiver rather than the switch. That flexibility was genuinely valuable when this generation was current and it remains useful on the secondary market, because a single spare chassis covers both kinds of closet.
LAN Base on a data-only chassis
The final L marks the LAN Base image, the larger of the two feature sets offered on this generation and fixed at manufacture. The T marks a data-only switch: no port on this chassis sources Power over Ethernet, so telephones, cameras and access points behind it need injectors or their own supplies. Cisco describes the Catalyst 2960-S and 2960 Series as Layer 2 edge switches, which is the correct frame for what this model does.
Forty-eight Fast Ethernet ports behind two Gigabit paths
The oversubscription arithmetic on this chassis is unusually favourable and it is one of the reasons the generation aged well. Forty-eight access ports capped at 100 Mbps produce a theoretical access-layer total of 4.8 Gbps, and the two active uplink paths run at 1 Gbps each for 2 Gbps in aggregate. That is a ratio of roughly 2.4 to 1, which is far healthier than the same two uplinks would be behind 48 Gigabit ports.
In a closet of desktops, printers and terminals that ratio means the uplink is effectively never the constraint. It is worth knowing when a site plans a replacement, because swapping this switch for a Gigabit chassis on the same two uplinks multiplies the potential access-layer load by ten while leaving the path out of the room unchanged.
Identifying the right unit before you order
Three characters separate this model from switches that behave differently in a rack, and all three are easy to lose in a purchase order. The middle segment gives the port count and speed. The TC marks data-only with dual-purpose uplinks, where PST would mark powered ports with four independent uplinks and TT would mark two fixed copper uplinks. The final letter gives the software image, L for LAN Base and S for LAN Lite.
Reading the full part number rather than the family name is the whole of the diligence required here, and it prevents the two mistakes that actually occur: buying a LAN Lite chassis for a design that needs LAN Base, and buying a dual-purpose uplink switch for a topology drawn with four paths.
Where the 48TC-L sits in the classic 2960 range
Its two closest relatives differ in exactly one property each: the software image, and the uplink type.
| Model | Uplinks | Image | PoE |
|---|---|---|---|
| 2960-48TC-L | 2 dual-purpose, one active per pair | LAN Base | None |
| 2960-48TC-S | 2 dual-purpose, one active per pair | LAN Lite | None |
| 2960-48TT-L | 2 x 1000BASE-T copper only | LAN Base | None |
Where Gigabit access ports and a 10 Gigabit uplink are the requirement, the Catalyst 2960S-48FPD-L is a later generation built for it. The current-generation counterpart at this port count is a Catalyst 9300 48-port model, and the routing tier usually paired with a closet of this size is a Cisco ISR 4331.
Lifecycle and support horizon
This model is named in Cisco end-of-life notice EOL9449 for the classic Catalyst 2960 range. End-of-Sale was 31 October 2014, the Last Ship Date was 29 January 2015, End of Software Maintenance was 31 October 2015, End of Vulnerability and Security Support was 30 October 2017 and the Last Date of Support was 31 October 2019.
The generation is fully retired by Cisco, and the honest position is that this switch is bought for continuity rather than capability. It replaces a failed unit in a working closet without a configuration migration, a change window or a redesign, and for a site running a Fast Ethernet access layer that has not been a problem, that is the cheapest possible answer to a hardware failure.
Condition, testing and what ships
Refurbished enterprise hardware bearing the original Cisco part number. Testing runs on receipt and again on despatch, with disassembly, cleaning, inventory, assembly and configuration in between. Whole systems including this switch carry the 2-year Enterasource warranty, and shipping is free FedEx Ground to the lower 48 states.
SFP transceivers and rack hardware are separate line items unless quoted with the chassis. Cisco software entitlement is not included with used hardware and does not transfer with it.
Frequently Asked Questions
Does a Catalyst 2960-48TC-L have two uplinks or four?
Two active paths, from four physical connectors. Cisco documents two dual-purpose uplinks, each containing one 10/100/1000 copper port and one SFP slot, with one port active per pair. A design that assumes four simultaneous uplinks from this chassis will not work as drawn, and the ceiling of two applies regardless of which connectors are populated.
Can I use the copper and the SFP side of the same uplink pair together?
No. Within each dual-purpose pair only one of the two ports carries traffic at a time, which is what makes it dual-purpose rather than two independent uplinks. The design exists so that one switch model suits both a fibre closet and a copper closet, and so a site can change from one to the other by swapping a transceiver instead of a chassis.
Is the Catalyst 2960-48TC-L a PoE switch?
No. The T in the designation marks a data-only chassis and no port on this switch sources Power over Ethernet. Telephones, cameras and access points behind it need midspan injectors or local power adapters. Within the same classic generation the PST model is the one that supplies power on its access ports.
What is the difference between a 2960-48TC-L and a 2960-48TC-S?
The software image, marked by the final letter. The L is LAN Base and the S is LAN Lite, which is the smaller feature set of the two offered on this generation. Access ports, uplink arrangement and chassis are otherwise identical, and the image is fixed at manufacture so it cannot be changed after purchase.
What condition are refurbished classic Catalyst 2960 switches supplied in?
Cleaned, tested and configured to the order. Every chassis is bench tested twice, once on receipt to establish that the fabric and both uplink pairs are sound and again after reassembly immediately before packing. Cosmetic wear is graded against the individual unit and any defect is written into its listing. The catalogue is on the Cisco networking hardware page.
