On 03/13/2015 06:25 PM, Georgios Dimitrakakis wrote:
If I do an :
arping -U -I etho x.x.x.x
where x.x.x.x is the IP address.
I can almost immediately access them outside of the subnet!
I had forgotten that, Still is that the very same set of options the
OpenStack code uses?
Do you mean that OpenStack is sending a gratuitous ARP for all
and the router is ignoring them unless it is for a specific IP address?
If this is the case is there anything I can do?
I will second the suggestion of getting a packet trace to see just what
sort of ARP traffic the compute node(s) send and then compare that with
the documentation for your router.
rick
Regards,
George
On 03/13/2015 04:55 PM, Georgios Dimitrakakis wrote:
The value is 10
Do you believe that it should be bigger?
These accesses of instances which are being delayed by 20 minutes -
are they delayed for other instances in the subnet, or just for
accesses from outside the subnet (ie through a real router)?
There may be some rather "conservative" routers out there which might
not accept gratuitous ARPs, considering it more secure to ARP for
those IPs explicitly itself.
rick jones
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