Switch Cisco SLM248GT

48 port 10/100; 2 Combo mini GBIC ports.
Performance: Switching capacity 13.6 Gbps.
Layer 2: Port grouping up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation, Support for up to 256 VLANs simultaneously (out of 4096 VLAN IDs), Head of line (HOL) blocking HOL blocking prevention.
Internet Group Management Protocol(IGMP) versions 1 and 2 snooping: IGMP limits bandwidth intensive multicast traffic to only the requesters; supports 256 multicast groups.
QoS: Priority levels 4 : hardware queues, Scheduling: Priority queuing and weighted round robin (WRR), Queue assignment based on DSCP and class of service (802.1p/CoS).