Specifications

IP Switching Commands
show interfaces switching
ISW-148
Cisco IOS IP Switching Command Reference
May 2008
Related Commands
Ta b l e 20 show interfaces switching Field Descriptions
Field Description
Throttle count Number of times input packet processing was throttled on this interface.
Drops RP—Number of packets dropped for input congestion.
SP—Number of packets flushed by external throttling.
SPD Flushes Fast—Number of packets flushed by selective packet discard on RP.
SSE—Number of packets flushed by external selective packet discard.
SPD Aggress Fast—Input packets dropped by aggressive selective packet discard.
SPD Priority Inputs—Number of priority packets received.
Drops—Number of priority packets dropped.
Protocol Name of the protocol for which packet switching information is displayed.
Switching Path Indicates the traffic switching path.
Pkts In Number of incoming packets.
Chars In Number of incoming bytes.
Pkts Out Number of outgoing packets.
Chars Out Number of outgoing bytes.
Process Process switching. With this type of switching, an incoming packet is associated
with a destination network or subnet entry in the routing table located in main
memory. Process switching is performed by the system processor.
Cache misses Packets that were forwarded through the process level (for which there was no
entry in fast switching cache).
Fast Fast switching. With this type of switching, an incoming packet matches an entry
in the fast-switching cache located in main memory. Fast switching is done via
asynchronous interrupts, which are handled in real time. Fast switching allows
higher throughput by switching a packet using a cache created by previous
packets.
Auton Autonomous switching. With this type of switching, an incoming packet matches
an entry in the autonomous-switching cache located on the interface processor.
Autonomous switching provides faster packet switching by allowing the ciscoBus
controller to switch packets independently without having to interrupt the system
processor. It is available only on Cisco 7000 series routers and in AGS+ systems
with high-speed network controller cards.
SSE Silicon switching engine switching. With this type of switching, an incoming
packet matches an entry in the silicon-switching cache located in the silicon
switching engine (SSE) of the Silicon Switch Processor (SSP) module. This
module is available only on Cisco 7000 series routers. Silicon switching provides
very fast, dedicated packet switching by allowing the SSE to switch packets
independently without having to interrupt the system processor.
Command Description
show interface stats Displays numbers of packets that were process switched, fast switched, and
distributed switched.