Specifications
IP Switching Commands
show ip cache
ISW-150
Cisco IOS IP Switching Command Reference
May 2008
10.108.11.12/32 0:05:10 Ethernet0/0 00000C01281200000C0357430800
10.108.11.57/32 0:06:29 Ethernet0/0 00000C01281200000C0357430800
Table 21 describes the significant fields shown in the display.
The following is sample output from the show ip cache command with a prefix and mask specified:
Router# show ip cache 10.108.5.0 255.255.255.0
IP routing cache version 4490, 119 entries, 17464 bytes, 0 hash overflows
Minimum invalidation interval 2 seconds, maximum interval 5 seconds,
quiet interval 3 seconds, threshold 0 requests
Invalidation rate 0 in last second, 0 in last 3 seconds
Last full cache invalidation occurred 0:11:56 ago
Prefix/Length Age Interface MAC Header
10.108.5.0/24 0:00:34 Ethernet1/2 00000C04520800000C03574D0800
Ta b l e 21 show ip cache Field Descriptions
Field Description
IP routing cache version Version number of this table. This number is incremented any time
the table is flushed.
entries Number of valid entries.
bytes Number of bytes of processor memory for valid entries.
hash overflows Number of times autonomous switching cache overflowed.
Minimum invalidation interval Minimum time delay between cache invalidation request and actual
invalidation.
maximum interval Maximum time delay between cache invalidation request and actual
invalidation.
quiet interval Length of time between cache flush requests before the cache will
be flushed.
threshold <n> requests Maximum number of requests that can occur while the cache is
considered quiet.
Invalidation rate <n> in last
<m> seconds
Number of cache invalidations during the last <m> seconds.
0 in last 3 seconds Number of cache invalidation requests during the last quiet interval.
Last full cache invalidation
occurred <hh:mm:ss> ago
Time since last full cache invalidation was performed.
Prefix/Length Network reachability information for cache entry.
Age Age of cache entry.
Interface Output interface type and number.
MAC Header Layer 2 encapsulation information for cache entry.