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rob
New Member

2600 processor revisions and memory allocations

I have 4 cisco 2610(MPC860) all running the same IOS of c2600-j1s3-mz.123-1.bin and they all have the same interface modules installed.

My question is whats the difference between the processor IDs and why has each router allocated my 64MB of memory into two allocations that all differ?

Example

Router 1 = cisco 2610 (MPC860) processor (revision 0x300) with 61440K/4096K bytes of memory

Router 2 = cisco 2610 (MPC860) processor (revision 0x203) with 61440K/4096K bytes of memory

Router 3 = cisco 2610 (MPC860) processor (revision 0x203) with 53248K/12288K bytes of memory.

Router 4 = cisco 2610 (MPC860) processor (revision 0x202) with 59392K/6144K bytes of memory

Any answers or pointers in the right direction would be much appreciated

Thanks

1 REPLY
Silver

Re: 2600 processor revisions and memory allocations

2600 Series DRAM is logically divided in Main Processor Memory and Shared Input/Output (I/O) Memory. Shared I/O Memory is shared among interfaces for temporary storage of packets. The 2600 can reallocate the split between processor and I/O memory (as can the 3600 series) with the memory-size iomem command.

I'm not sure, but in

"cisco 2610 (MPC860) processor (revision 0x203) with A/B bytes of memory."

i think B is the I/O memory

So i think there's two possible causes of these differences between routers:

1. There are different "memory-size iomem " commands configured at each router.

2. Different processor revisions have different default memory splits configurations.

HTH

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