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- Description
- Specifications
The SM-D-ES3G-48-P is a Cisco EtherSwitch service module with 48 10/100/1000 Ethernet ports on RJ-45 connectors. It is double-wide, works at Layer 2 and Layer 3, and has PoE support. One double-wide module goes into a Cisco 2921, 2951, 3925 or 3945 router.
Each port can be set to 10, 100 or 1000 Mbps in full duplex, or left on autonegotiation, which is the default under IEEE 802.3ab. Ports are numbered right to left and top to bottom, the slot number is always 0, and Gigabit Ethernet port 3 is interface gi 0/3. A port LED is green for a link, flashes green for activity and turns amber when Spanning-Tree blocks the port.
Only the 48-port EtherSwitch modules take SFP optics, and a 10/100/1000 port or an SFP port can act as an uplink or a trunk to another module or switch. PoE is available with the router AC-PoE power supply at -48 V, configurable per port. The 24-port module in the same family is the SM-ES3G-24-P 24-port gigabit EtherSwitch service module, and wider switch choices are in Cisco switches.
| Part number | SM-D-ES3G-48-P |
| Type | Double-wide Layer 2 and Layer 3 EtherSwitch service module |
| Ports | 48 x 10/100/1000 Ethernet (RJ-45) |
| Port speed | 10, 100 or 1000 Mbps, full duplex |
| PoE | Supported, -48 V from the router AC-PoE power supply |
| Port numbering | Right to left, top to bottom, slot always 0 |
| SFP | Supported (48-port modules only) |
| Uplinks | 10/100/1000 or SFP port |
| Console | No physical console, session through the host router |
| Router limit | 1 double-wide module |
| Compatible with | Cisco 2921, 2951, 3925, 3945 routers |