My knowledge of Cisco is very basic and I´m having this error constantly. I have to reboot every time, and it does not seem right. How can I solve it at once?? What I know of this device is that it has set up a VPN account and other Internet whenever I get the error Internet connection is cut, but not the VPN.
If you are on release 12.4(15)T12 | 12.4(24)T2 then this could be related to a Cisco bug CSCtg26917 with more details on it here
Chunk manager consume almost all memory. We found the issue is related to NAT
The memory hold by chunk manager increased quickly while NAT translate increased rapidly.
If you are using NAT and are on this version of IOS, it would be adviseable for you to do an upgrade of the firmware.
The default memory of 32 MB Flash and 128 MB DRAM is sufficient to support complex configurations and help ensure operation for an extended period. Memory is expandable to support maximum of 128 MB Flash and 384 MB DRAM, offering additional investment protection.