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IBM Ethernet Switch B24X 7
Link aggregation
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Up to eight links per group, 28 link groups per switch
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Static trunks compatible with Cisco EtherChannel
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802.3ad Link Aggregation Control Protocol (LACP) for dynamic trunk groups
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Quality of service (QoS) and rate shaping
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Eight queues per port with strict priority (SP), weighted round robin (WRR), and combined
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SP/WRR schedulers
802.1p Class of Service (CoS)
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IP DSCP/DiffServ (Type of Service) to priority mapping
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ACL, port, and static MAC address to priority mapping
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Layer 2 CoS and Layer 3 DSCP re-marking
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Outbound rate shaping
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Layer 2
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Up to 32,000 MAC addresses.
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Per-VLAN Rapid Spanning Tree Protocol Plus (PVST/PVST+/PVRST+) compatibility in
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default configuration supports smooth implementation into Cisco Layer 2 environments.
802.1d Spanning tree Protocol (STP).
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802.1w Rapid Spanning Tree Protocol (RSTP).
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802.1s Multiple Spanning Tree Protocol (MSTP) enables multiple STP instances and
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forwarding paths for more efficient traffic distribution.
Virtual Switch Redundancy Protocol (VSRP) alternative to STP and includes sub-second
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convergence and Layer 2 redundancy based on the VRRPE protocol.
Metro Ring Protocol (MRP) v1/v2 enables fast, sub-second convergence in ring topologies.
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IGMPv1/v2/v3 Snooping and PIM-SM Snooping reduce multicast flooding in a Layer 2
network.
Root Guard prevents rogue devices from hijacking STP root.
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BPDU Guard prevents rogue devices from participating in STP.
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DHCP Assist helps DHCP servers respond correctly to devices in a different subnet than the
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DHCP server.
Layer 3
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Up to 12,000 IPv4 routes
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Routing Information Protocol (RIP) v1/v2
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Open Shortest Path First (OSPF) v2
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Internet Group Management Protocol (IGMP) v1/v2/v3
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Protocol Independent Multicast Dense Mode (PIM-DM) v1/v2 and Sparse Mode (PIM-SM) v2
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Equal Cost Multi Path (ECMP) for load balancing across up to eight paths
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Virtual Router Redundancy Protocol (VRRP) and VRRP-E (Enhanced)
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