10G Compatible SFP+ Transceivers for Cisco Catalyst 4948E Switch.Then which SFP can I use on my 4948E? Cisco Gigabit Ethernet Transceiver Modules Compatibility Matrix gives us following table: 1G Compatible SFP Transceivers for Cisco Catalyst 4948E Switchįrom the passage above we can know that Cisco Catalyst 4948E switch has 4 SFP uplink ports.The following part will introduce the details about compatible transceivers for Cisco Catalyst 4948E switch. In addition, these ports can also support CWDM SFP transceivers and DWDM SFP transceivers. The four uplink SFP/SFP+ ports on Cisco Catalyst 4948E can support both copper and fiber optic transmission of 1G/10G by using different modules and cables. Uplink Connection for Cisco Catalyst 4948E Switch A network cable with a RJ-45 plug at both end can connect Cisco Catalyst 4948E switch to the downlink target devices. If the attached devices do not support auto-negotiation, the speed and duplex parameters can be set explicitly. The great advantage of these ports is that they can configure themselves to operate at the speed of the attached devices. The 48 ports on the front panel of Catalyst 4948E can support downlink of 10/100/1000M. The following picture shows the detailed port information of Cisco Catalyst 4948E switch.ĭownlink Connection for Cisco Catalyst 4948E Switch Port Information of Catalyst 4948E SwitchĬisco Catalyst 4948E switch is a one-rack-unit (1RU) fixed configuration network switch with 48 RJ45 ports of 10/100/1000M for downlink and 4 SFP/SFP+ ports of 1/10G for uplink on the front panel. This post will introduce the detailed compatible transceivers information for Cisco Catalyst 4948E switch. Cisco Catalyst 4900 series switches were once the most widely deployed ToR (top-of-rack) switches in this industry.
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