Re: several master ip's for a slave zone

2011-11-07 Thread Barry Margolin
In article mailman.5.1320639019.68562.bind-us...@lists.isc.org, Mark Andrews ma...@isc.org wrote: Transfer graph loops prevent expire working as a safeguard against loss of connectivity to the master source. Some people may consider that a feature. Of course, they could also just set the

Re: several master ip's for a slave zone

2011-11-06 Thread Phil Mayers
On 11/05/2011 01:32 PM, Felix New wrote: if i have several master servers, whether i must ensure that all the master server's serial are the same? i think this is a little complex, in particular zone is updated by dynamic update(In such a scenario, the serial number is controled by every single

Re: several master ip's for a slave zone

2011-11-06 Thread Chris Thompson
On Nov 5 2011, Alan Clegg wrote: On 11/5/2011 4:21 AM, kalpesh varyani wrote: How does this feature address the risk that data provided by one master might get overwritten by another? The use of the word masters in the configuration of a slave zone is a bit misleading. Under most

Re: several master ip's for a slave zone

2011-11-05 Thread kalpesh varyani
How does this feature address the risk that data provided by one master might get overwritten by another? Regards, Kalpesh On Fri, Nov 4, 2011 at 4:08 AM, Anand Buddhdev ana...@ripe.net wrote: On 03/11/2011 23:14, hugo hugoo wrote: Hi Hugo, I have seen that for a slave zone, it is

Re: several master ip's for a slave zone

2011-11-05 Thread Anand Buddhdev
On 05/11/2011 09:21, kalpesh varyani wrote: How does this feature address the risk that data provided by one master might get overwritten by another? Why would anyone run multiple masters with differing zone contents? Anand ___ Please visit

Re: several master ip's for a slave zone

2011-11-05 Thread Phil Mayers
On 11/05/2011 08:21 AM, kalpesh varyani wrote: How does this feature address the risk that data provided by one master might get overwritten by another? The zone serial number is checked, and a transfer is only done if the serial is higher than the local one. It is assumed the zone admin

Re: several master ip's for a slave zone

2011-11-05 Thread Alan Clegg
On 11/5/2011 4:21 AM, kalpesh varyani wrote: How does this feature address the risk that data provided by one master might get overwritten by another? The use of the word masters in the configuration of a slave zone is a bit misleading. Under most circumstances, you list the authoritative

Re: several master ip's for a slave zone

2011-11-05 Thread Lyle Giese
On 11/05/11 03:21, kalpesh varyani wrote: How does this feature address the risk that data provided by one master might get overwritten by another? Regards, Kalpesh On Fri, Nov 4, 2011 at 4:08 AM, Anand Buddhdev ana...@ripe.net mailto:ana...@ripe.net wrote: On 03/11/2011 23:14, hugo hugoo

Re: several master ip's for a slave zone

2011-11-05 Thread Felix New
if i have several master servers, whether i must ensure that all the master server's serial are the same? i think this is a little complex, in particular zone is updated by dynamic update(In such a scenario, the serial number is controled by every single bind). is it correct? 2011/11/5 Alan

Re: several master ip's for a slave zone

2011-11-05 Thread Alan Clegg
On 11/5/2011 9:32 AM, Felix New wrote: if i have several master servers, whether i must ensure that all the master server's serial are the same? i think this is a little complex, in particular zone is updated by dynamic update(In such a scenario, the serial number is controled by every single

several master ip's for a slave zone

2011-11-03 Thread hugo hugoo
Hello, I have seen that for a slave zone, it is possible to configure several master IP's. Why this possibility? How does it works if several master zone can be used for the zone transfer? Thanks for any feedback, Hugo,

Re: several master ip's for a slave zone

2011-11-03 Thread Anand Buddhdev
On 03/11/2011 23:14, hugo hugoo wrote: Hi Hugo, I have seen that for a slave zone, it is possible to configure several master IP's. Why this possibility? How does it works if several master zone can be used for the zone transfer? This allows for resiliency. In case one of the master