IBM Ethernet Switch B24X | IBM specification

zLink aggregation

zUp to eight links per group, 28 link groups per switch

zStatic trunks compatible with Cisco EtherChannel

z802.3ad Link Aggregation Control Protocol (LACP) for dynamic trunk groups

zQuality of service (QoS) and rate shaping

zEight queues per port with strict priority (SP), weighted round robin (WRR), and combined SP/WRR schedulers

z802.1p Class of Service (CoS)

zIP DSCP/DiffServ (Type of Service) to priority mapping

zACL, port, and static MAC address to priority mapping

zLayer 2 CoS and Layer 3 DSCP re-marking

zOutbound rate shaping

zLayer 2

zUp to 32,000 MAC addresses.

zPer-VLAN Rapid Spanning Tree Protocol Plus (PVST/PVST+/PVRST+) compatibility in default configuration supports smooth implementation into Cisco Layer 2 environments.

z802.1d Spanning tree Protocol (STP).

z802.1w Rapid Spanning Tree Protocol (RSTP).

z802.1s Multiple Spanning Tree Protocol (MSTP) enables multiple STP instances and forwarding paths for more efficient traffic distribution.

zVirtual Switch Redundancy Protocol (VSRP) alternative to STP and includes sub-second convergence and Layer 2 redundancy based on the VRRPE protocol.

zMetro Ring Protocol (MRP) v1/v2 enables fast, sub-second convergence in ring topologies. IGMPv1/v2/v3 Snooping and PIM-SM Snooping reduce multicast flooding in a Layer 2 network.

zRoot Guard prevents rogue devices from hijacking STP root.

zBPDU Guard prevents rogue devices from participating in STP.

zDHCP Assist helps DHCP servers respond correctly to devices in a different subnet than the DHCP server.

zLayer 3

zUp to 12,000 IPv4 routes

zRouting Information Protocol (RIP) v1/v2

zOpen Shortest Path First (OSPF) v2

zInternet Group Management Protocol (IGMP) v1/v2/v3

zProtocol Independent Multicast Dense Mode (PIM-DM) v1/v2 and Sparse Mode (PIM-SM) v2

zEqual Cost Multi Path (ECMP) for load balancing across up to eight paths

zVirtual Router Redundancy Protocol (VRRP) and VRRP-E (Enhanced)