Verifying Flash Memory
The ISR router shown in Table 2.6 has 64MB of RAM, and roughly half of the memory is in use.
The show flash and show version are probably two of your most important commands.
Let’s go through the outputs of each:
Router#sh flash
-#- --length-- -----date/time------ path
1 21710744 Jan 2 2007 22:41:14 +00:00 c2800nm-advsecurityk9-mz.124-12.bin
[output cut]
32989184 bytes available (31027200 bytes used)
The amount of flash is actually easier to tally using the show version command on the ISR
routers:
Router#show version
[output cut]
Cisco 2811 (revision 49.46) with 249856K/12288K bytes of memory.
Processor board ID FTX1049A1AB
2 FastEthernet interfaces
4 Serial(sync/async) interfaces
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
62720K bytes of ATA CompactFlash (Read/Write)