DHCP snooping database redundancy - FTP ?

[Rajagopal Sivaramakrishnan]

Hi All

We have multiple locations on DHCP snooping (proposed), and everything pointing to a single FTP server (VM)..

how do we provide redundancy for this ftp server ? i dont think we can define multiple databases on the switch side.. right ? is it going to be a load balancing solution, with multiple servers at the back ?

what is the impact if the FTP server goes down for all locations ? existing dhcp clients would work, and only the new ip renewals wouldnt happen. right ?

[Philip D'Ath]

Look at VMWare.

Everything continues to work if the FTP server is down, it just can't write new backups of the database on the switch to the FTP server.

I don't think you need to worry about HA that much in this area.  The consequences of failure of the FTP server are minimal.

[Rajagopal Sivaramakrishnan]

Thanks Philip.

So , the bindings will be local to the switch, and will never go to FTP. FTP is used only when the switch reboots, to get back the bindings without the users having to renew their IP address ? Right ?

[Philip D'Ath]

Essentially correct.

[Rajagopal Sivaramakrishnan]

Ok. Thanks all.

Ill then create one txt file for each switch and forward it to the ftp server... by doing this , we will have many txt files, one for each switch..

Thanks all.

[Philip D'Ath]

Each time a switch uploads a file it overwrites what is there - so each switch needs its own file, otherwise they will keep overwriting each other.

[Deepak Kumar]

Yes, It is correct