01-03-2010 01:47 AM - last edited on 03-25-2019 03:28 PM by ciscomoderator
Hello all,
I am somewhat new to configuring Cisco products, in fact I am still preparing to take the CCNA exam, so forgive me for my ignorance in this question, but I am unable to find and answer. I recently purchased a 1760 and 1760-v router running IOS ver 12.4(15)T with image c1700.adventerprisek9.mx.124-15T, and I have been experimenting with various Cisco phones. I have been able to get most of them working but in the process of configuring the 7960 I ran into the problem of being unable to issue the mkdir command to create a directory in flash. Turns out that I am running a Class B flash file system. My question is how do i convert it to a Class C flash file system. I am under the impression it can be done because the 7970 admin guide says that some commands like mkdir may not be available in certain IOS's in which case convert to a Class C file system. The format flash: command currently does not work for me. Any suggestions would be appreciated, and once again I am sorry for my ignorance in this matter.
Thanks
-Jeff
Solved! Go to Solution.
01-04-2010 01:51 AM
Hello Jeff,
if this is a home lab you can think of using a PC based TFTP server: on the C1760 DCHP pool you can use option 150 to indicate a TFTP server this quite common in CUCM deployments.
See this example we used for a branch
ip dhcp pool VOICE
network 10.110.224.144 255.255.255.248
default-router 10.110.224.145
dns-server 10.98.112.32 10.55.0.32
netbios-name-server 10.52.64.37 10.24.128.151
option 150 ip 10.98.67.5 10.55.61.4
lease 0 1
option 150 points to the TFTP servers that in our case are part of a CCM cluster.
To know if this is compatible with CME on your router you can put a question in the IP telephony forum.
Hope to help
Giuseppe
01-03-2010 01:56 AM
Hello Jeff,
see this procedure listed for C3600:
on the PCMCIA filesystem compatibility matrix
http://www.cisco.com/en/US/products/hw/routers/ps341/products_tech_note09186a00800a7515.shtml
the key point should be to use the erase command followed by squeeze on the empty flash.
Hope to help
Giuseppe
01-03-2010 01:22 PM
Giuseppe,
Thank you very much for the fast response. I followed your instructions and read throught the pdf link. After erasing flash: and squeezing flash: I restarted the router and using tftpdnld I reloaded the IOS image, however I am still unable to issue an mkdir command to create a directory in flash: I'm not sure what I am doing wrong or is it just not possible to create a directory on the 1760?
Many Thanks
-Jeff
01-03-2010 01:27 PM
Hello Jeffrey,
I may be wrong but I'm afraid that the procedure is valid only for the 3600 platform: generally as explained in the link a router or switch platform has a specific filesystem and stays with it all the time.
The c3600 is mentioned there as a special case of a device capable to migrate to another filesystem.
Hope to help
Giuseppe
01-03-2010 11:43 PM
Giuseppe,
Thank you very much for your help, I think my suspicions have been confirmed that the class C filesystem commands that have been activated in the 1760 are too limited for my needs (not being able to make directories in the flash:). At this point I think I will have to upgrade to a 2801 router with the native class C flash filesystem. Thank you again for your help.
Many Thanks
-Jeff
01-04-2010 01:51 AM
Hello Jeff,
if this is a home lab you can think of using a PC based TFTP server: on the C1760 DCHP pool you can use option 150 to indicate a TFTP server this quite common in CUCM deployments.
See this example we used for a branch
ip dhcp pool VOICE
network 10.110.224.144 255.255.255.248
default-router 10.110.224.145
dns-server 10.98.112.32 10.55.0.32
netbios-name-server 10.52.64.37 10.24.128.151
option 150 ip 10.98.67.5 10.55.61.4
lease 0 1
option 150 points to the TFTP servers that in our case are part of a CCM cluster.
To know if this is compatible with CME on your router you can put a question in the IP telephony forum.
Hope to help
Giuseppe
01-12-2010 12:35 AM
Giuseppe,
Thank you very much for the help. This was a home lab so I took your advice and set up a computer just for TFTP access and the backgrounds are working great.
Thank you very much
-Jeff
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