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Cisco Router Flash Memory Question

superkingkongsuperkingkong Member Posts: 23 ■□□□□□□□□□
in CCNA & CCENT
Hi guys,

Lately i've learned that router can be a tftp server and router A could download from router B.

I have few questions. Hope you guys can help me out here.

Note: Assuming Router B is the "tftp-server"

1. If my flash on Router B is big enough, can i store 2 IOSes?

2. If the answer is yes, how would the router knows which one to use for booting?

3. If "yes" in Q1, can i store 2 different IOSes? one for the booting of Router B and the other IOS is for other router (storage purpose)

eg, Router B is a C2621, so in the flash, there are C2600 ios and C2500 ios (to be downloaded by other router that is connected to it).

Thanks.
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    tierstentiersten Member Posts: 4,505
    superkingkong wrote: »
    1. If my flash on Router B is big enough, can i store 2 IOSes?
    Assuming that the router you're using has a filesystem on the flash then yes. Older routers like the 2500 didn't.
    superkingkong wrote: »
    If the answer is yes, how would the router knows which one to use for booting?
    boot system entry in the configuration or it'll boot whatever it finds first.
    superkingkong wrote: »
    3. If "yes" in Q1, can i store 2 different IOSes? one for the booting of Router B and the other IOS is for other router (storage purpose)
    Yes
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    superkingkongsuperkingkong Member Posts: 23 ■□□□□□□□□□
    tiersten wrote: »
    Assuming that the router you're using has a filesystem on the flash then yes. Older routers like the 2500 didn't.

    so what about like 2621 or 2630XM or 3640?
    tiersten wrote: »
    boot system entry in the configuration or it'll boot whatever it finds first.

    Care to explain more on how to configure boot system entry? i mean the commands to be used. ( to set which to boot or to view, etc)

    thanks
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    peanutnogginpeanutnoggin Member Posts: 1,096 ■■■□□□□□□□
    superkingkong wrote: »
    so what about like 2621 or 2630XM or 3640?
    26xx, 26xxXM, & 36xx are all good to go with flash filesystems!
    superkingkong wrote: »
    Care to explain more on how to configure boot system entry? i mean the commands to be used. ( to set which to boot or to view, etc)

    thanks

    This link should point you in the right direction...
    HTH

    -Peanut
    We cannot have a superior democracy with an inferior education system!

    -Mayor Cory Booker
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