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C-1
Appendix C: Specifications
Physical Characteristics
Ports
SMC8926EM:20 10/100/1000BASE-T, with auto-negotiation
4 10/100/1000BASE-T shared with 4 SFP transceiver slots
2 10GBASE extender module slots for XFP transceivers
Two slots for stacking transceivers
SMC8950EM:44 10/100/1000BASE-T, with auto-negotiation
4 10/100/1000BASE-T shared with 4 SFP transceiver slots
2 10GBASE extender module slots for XFP transceivers
Two slots for stacking transceivers
Network Interface
Ports 1-24/48: RJ-45 connector, auto MDI/X
10BASE-T: RJ-45 (100-ohm, UTP cable; Category 3 or better)
100BASE-TX: RJ-45 (100-ohm, UTP cable; Category 5 or better)
1000BASE-T: RJ-45 (100-ohm, UTP or STP cable; Category 5, 5e, or 6)
*Maximum Cable Length - 100 m (328 ft)
Buffer Architecture
SMC8926EM: 2 Mbytes
SMC8950EM: 4 Mbytes
Aggregate Bandwidth
SMC8926EM: 138 Gbps
SMC8950EM: 186 Gbps
Switching Database
16K MAC address entries, 1024 static MAC addresses;
2K IPv4 and 1K IPv6 entries in host table, 4K ARP entries,
256 IPv4 or 256 IPv6 entries in the IP routing table,
64 static IP routes, 32 IP interfaces; 255 multicast groups
LEDs
System:
Stack Master, Stack Link, Module, Power, D
i
ag, RPS
Port: Status (link, speed, activity)