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Tomhawk line cards use 6-core Intel x86 64 bit CPUs (Ivy Bridge EN 6 cores @ 2Ghz)
Tomahawk cards come as service-edge-optimised (SE) or packet-transport-optimised (TR).
Examples of Tomahawk cards include the 16x100GE card (A9K-16X100GE "Azteca").
Tomahawk line cards use the Tomahawk ASIC which runs up to 240Gbps Full Duplex (150Mpps) feeding into a 200Gbps Tigershark Fabric Interconnect ASIC, feeding into a 1.20Tbps SM15 Fabric Switching ASIC.
The 200Gbps FIA means that certain Ethernet line cards like the 24x10G (1xTomahawk NPU) and 48x10G (2xTomahawk NPU) are slightly oversubscribed.
Tomahawk cards support 4M IPv4 or 2M IPv6 prefixes (Tomahawk cards use MTRIE so there are no scaling issues like with the Trident cards which use sub-trees).
Tomahawk cards support 1M MPLS labels.
The search memory (1M labels, 2M MAC, 4M/2M v4/v6 routes) in the NPU is RLDRAM and there are seperate L2 and L3 search memories so no scale profiles as with Trident which uses a shared search memory for L2 and L3.
Each Tomahawk NPU has 12GB of packet buffers (~200ms) and 1M egress queues per NPU.