well do you know whether we can have internal flash memory cause my 2811 router boots the image from the internal flash . I cant get you the show version output , to show?
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DOES CISCO 2811 ROUTER HAS INTERNAL FLASH MEMORY CARD
HI ,
Does anyone know , whether there is an internal flash memory card in 2811 routers . cause the one i use in CCNP Lab does not have an external flash slot but it is loading the image from an internal flash memory? i need to know, whether is it possible to have one internal flash card reader in 2811 router?
Urgent Please reply
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Answers
It depends on what you mean by "embedded on the motherboard". There is external CF that you can add and I believe it will take up to 256MB CF cards.
The internal flash is for storing the bootstrap program (ROM monitor), the configuration register, and the startup configuration. There's no other internal. Just that external slot. See more here:
http://www.cisco.com/en/US
You need the external card to store the IOS so the router can run.
Contrary to what Cisco will tell you you don't necessarily need Cisco Branded CF cards (at an inflated price) but any decent quality CF will work. It would not however be supported by them.
so you mean , there is no way to have an internal compact flash card installed and run IOS image on it? The reason why i'm asking it because the 2811 router which i used during my CCNP labs dint have on outside but i was working with an IOS image which i thought was inside.
So, do you have any guesses how this is possible?
If it was a 2811 there is a small internal fixed flash. It is not meant to run IOS but you could potentially do that. Most IOS images these days are larger than what that small fixed internal flash is. So - the answer is I don't know how this worked for you.
Furthermore, some routers, the 3845 for example have an internal CF card slot that could run a full featured IOS but not the 2811.
actually , i'm preparing a documentaion for upgrading RAM & Flash memory on 2620 / 2800 series / 3845 routers. And as i was doing research pull out information regarding the upgrade limitations and the modules avilable for memory upgrade; i found that all the 2800 /3800 series router boot from the External compact falsh memory and the maximum internal flash memory that CISCO ships therm is 4 MB ,with which i'm sure that you cannot run IOS image on it.
However, the 2811 series router whcih i used for my CCNP Labs during my university dint have an external compact flash card; morever, they where running IOS from some flash memory that was inside the router. I cant be blind , to miss those compact flash cards if that was in those routers external slots.
I cannot complete my documentation if i don't know how it was possible and if it is possible then i would recommed my clients to have an internal compact flash cards that can be highly secured for them from technicians possible removing the card from the router.
Hi ,
Is there a way to upgrade flash memory on 2620 router without using console cable connection.
Since the router is on a LIVE network , i need to do this upgrade without loosing the IP connectivity.
Once i copy the flash to the tftp server , i have to remove the old flash SIMM & install the new one. During this time the router needs to be turned off and the module should then be replaced.
So i will be needing a console cable to gain access to the router when it boots up in the rommon mode. Instead of doing this way if there a way to do this flash memory upgrade so that the router locates the tftp server automatically when it reboots after installing the new flash SIMM.
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by: millsclPosted on 2009-11-03 at 05:09:59ID: 25728528
2811 has 2MB internal flash for Boot/NVRAM