General | Rack Unit: | 1 | 1 | 1 | 1 | 1 | 1 | 1 | | Maximum port count and options: | 48p SFP+ | 48p SFP+/12p QSFP+ | 48p SFP+/12p QSFP+ | 48p SFP+/12p QSFP+ | 48p SFP+/12p QSFP+ | 36p QSFP+ | 20p QSFP-DD | | Number of switching channels: | 48 | 48 | 48 | 48 | 48 | 144 | 160 | | Data rates supported: | 100M, 1G, 10G, 25G | 100M1, 1G, 10G, 40G2 | 100M1, 1G, 10G, 40G2 | 100M1, 1G, 10G, 40G2 | 100M1, 1G, 10G, 40G2 | 1G, 10G, 40G1 | 1G, 10G, 40G1 | | Buffer: | 1.3MB shared | 1.5MB shared | 1.5MB shared | 32GB shared | – | – | – |
|
Layer 1 | Layer 1 switching/app (min latency): | – | Yes (3ns) | Yes (3ns) | Yes (3ns) | Yes (3ns) | Yes (5ns) | Yes (5ns) |
|
Layer 2 multiplexing | Layer 2 multiplexing (min latency): | – | Yes (39ns3) | Yes (39ns3) | – | – | – | – | | Layer 2 multiplexing features: | – | Max fan-in 48:1 | Max fan-in 48:1 | – | – | – | – | | VLAN tag/trunking | – | VLAN tag/trunking | – | – | – | – | – | | IGMP snooping | – | IGMP snooping | – | – | – | – | – | | MAC learning | – | MAC learning | – | – | – | – | – | | Layer 2 demultiplexing | – | Layer 2 demultiplexing | – | – | – | – | – |
|
Layer 2 switching/app | Layer 2 switching (min latency): | Yes (96ns) | Yes (95ns) | – | – | – | – | – | | Layer 2 switching features: | MAC Learning, STP, LLDP | MAC learning | – | – | – | – | – | | VLAN tag/trunking | VLAN tag/trunking | – | – | – | – | – | – | | IGMP snooping | IGMP Snooping | – | – | – | – | – | – |
|
Layer 2 timestamping | Layer 2 timestamping (resolution): | – | Yes (2.8ns) | Yes (2.8ns) | Yes (70ps) | – | – | – | | Layer 2 timestamping features: | – | Max fan-in 48:1 | Max fan-in 48:1 | Max fan-in 40:1 | – | – | – | | Max instances 4 | – | Max instances 4 | Max instances 1 | – | – | – | – | | Max outputs per instance 1 | – | Max outputs per instance 1 | Max outputs per instance 8 | – | – | – | – |
|
Layer 3 switching/app | Layer 3 switching (min latency): | Yes (130ns) | – | – | – | – | – | – | | Layer 3 switching features: | BGP, OSPF, PIM, VRRP, ACL, NAT | – | – | – | – | – | – |
|
Notes | Notes | 1.Pending SW support: 100MbE only supported at layer 1. SFP module and functionality limitiations apply. | 1.100MbE only supported at layer 1. SFP module and functionality limitiations apply. | 1.100MbE only supported at layer 1. SFP module and functionality limitiations apply. | 1.100MbE module and functionality limitiations apply. | 1.40GbE interoperability limitations apply. | 1.40GbE interoperability limitations apply. | – | | Notes | – | 2.40GbE only supported at layer 1, interoperability limitations apply. | 2.40GbE only supported with 40G firmware and QSFP+ line card. Layer 1, interoperability limitations apply. | 2.40GbE interoperability limitations apply. | – | – | – | | Notes | – | 3.Minimum latency not available at maximum fan-in or with layer 2 features. | – | – | – | – | – |
|