Can ACE 4710 send ICMP-dest-unreachable?

Answered Question
Jul 28th, 2010

Dear Community!


We have previously configured an ACE context for implementing redundant corporate DNS service and now testing a transparent ACE context and HA configuration.One virtual-IP is configured for UDP/53, listening for DNS requests. Behind the VIP, there are 3 DNS server. The next step of our testing process, we have shut down all real-server instance behind the virtual-IP while inspecting DNS clients behaviour. Besides the DNS clients requesting the virtual-IP DNS service need ICMP-destination-unreachable packet to switchover the secondary DNS server.


Can ACE 4710 send ICMP-dest-unreachable?


Thanks in advance!


Regards,


Belabacsi

from Hungary

Correct Answer by Gilles Dufour about 6 years 7 months ago

Unfortunately the 4710 does not send icmp unreachable when a vserver is down.

If you have backup dns service, you can configure it on ace itself.


Gilles.

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Correct Answer
Gilles Dufour Wed, 07/28/2010 - 07:49

Unfortunately the 4710 does not send icmp unreachable when a vserver is down.

If you have backup dns service, you can configure it on ace itself.


Gilles.

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