Dell PowerConnect FCS624S Release Notes - Page 22

Supported Layer 2 features Layer 2 software images include all of the management, security, and system-level features listed in the previous tables, plus the features listed in Table 7. Table 7 Supported Layer 2 features Category and description FESX FGS FSX FLS FSX 800 FSX 1600 FGS-STK FWS FCX FLS-STK 802.1D Spanning Tree Support: Yes Yes Yes Yes Yes Enhanced IronSpan support includes Fast Port Span, Fast Uplink Span, and Single-instance Span Up to 254 spanning tree instances for VLANs 802.1p Quality of Service (QoS): Strict Priority (SP) Weighted Round Robin (WRR) Combined SP and WRR 8 priority queues Yes Yes Yes Yes Yes 802.1s Multiple Spanning Tree Yes Yes Yes Yes Yes 802.1W Rapid Spanning Tree (RSTP) Yes Yes Yes Yes Yes 802.3ad link aggregation (dynamic trunk Yes Yes Yes Yes Yes groups) ACL-based rate limiting QoS Yes Yes Yes Yes Yes BPDU Guard Yes Yes Yes Yes Yes Dynamic Host Configuration Protocol Yes Yes Yes Yes Yes (DHCP) Assist IGMP v1/v2 Snooping Global Yes Yes Yes Yes Yes IGMP v3 Snooping Global IGMP v1/v2/v3 Snooping per VLAN Yes Yes Yes Yes Yes (*,G) (S,G) (S,G) (S,G) (S,G) Yes Yes Yes Yes Yes IGMP v2/v3 Fast Leave (membership Yes Yes Yes Yes Yes tracking) IronWare Software Release 07.2.00a for Brocade FastIron switches Release Notes v 1.0 Page 22 of 55