TFTP Service on which servers??

[Neily]

Hi

When we had our CCM4 servers installed I was told that the TFTP service can only be run on one CM at at time.

This seems funny to us, so we'd like to check that we can activate it on both the subsciber (which it isn't) and the publisher (which it is).

THANKS

 

[MG2005]

i have TFTP split across both the pub and subscriber...
always have...

 

[Wavesg]

Can you explain how you have the TFTP split in the pub and Sub. Thanks

Stay cool; it’s not over yet!

 

[MG2005]

To achieve both redundancy and load sharing between the TFTP servers, you can configure Option 150 to provide the two TFTP server addresses in reverse order for half of the DHCP scopes.

For example:

•In subnet 10.1.1.0/24: Option 150: TFTP1_P, TFTP1_S

•In subnet 10.1.2.0/24: Option 150: TFTP1_S, TFTP1_P

Under normal operations, a phone in subnet 10.1.1.0/24 will request TFTP services from TFTP1_P, while a phone in subnet 10.1.2.0/24 will request TFTP services from TFTP1_S. If TFTP1_P fails, then phones from both subnets will request TFTP services from TFTP1_S.

Load balancing avoids having a single TFTP server hot spot, where all phones from multiple clusters rely on the same server for service. TFTP load balancing is especially important when phone software loads are transferred, such as during a Cisco CallManager upgrade, because more files of larger size are being transferred, thus imposing a bigger load on the TFTP server.

 

[Neily]

so for option 150 in my DHCP scop I can specify two IPs??

Interesting. I was told that wasn't possible!

So 150: 192.168.10.1, 192.168.10.2 for CCM1 & CCM2

Great!!

THANKS

 

[Dieselruss]

Hello,
if you specify/check Array on the DHCP Option 150, you can specify several IP adresses.
Bye
Joachim