Hello community,
I am aware routers have different types of memories: RAM, NVRAM, ROM, and Flash and the following output is used to check amount of memory:
- Flash: I can see how much flash I have by issuing "show flash" or "dir flash"
- RAM: I can see how much RAM I have by issueing "show version" and looking at xxxx/xxxx
My question though are how do I check NVRAM and ROM? Also, what is the "show memory" command for? The reason I ask is because the "show version" and "show memory" commands do not give me the same information so I wonder what the "show memory" is giving me:
2811#sh version | i memory ---> DRAM installed is 256 MB, which matches output
Cisco 2811 (revision 53.51) with 247808K/14336K bytes of memory.
239K bytes of non-volatile configuration memory.
2811#sh memory ---> Some memory here is 128 MB, I don't know what though
Head Total(b) Used(b) Free(b) Lowest(b) Largest(b)
Processor 4789D3A0 127282272 87895148 39387124 114632 834228
I/O 3F200000 14680064 7548952 7131112 6776944 7119932
2811#sho flash ---> My Flash Card memory is 64 MB, which closely matches output
-#- --length-- -----date/time------ path
----File Details Omitted for Simplicity----
65327104 bytes available (62853120 bytes used)