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Can ACE 4710 send ICMP-dest-unreachable?

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

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Cisco Employee

Re: Can ACE 4710 send ICMP-dest-unreachable?

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.

2 REPLIES
Cisco Employee

Re: Can ACE 4710 send ICMP-dest-unreachable?

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.

New Member

Re: Can ACE 4710 send ICMP-dest-unreachable?

Dear gdufour!

Thanks for Your reply!

Regards,

Belabacsi

Budapest, Hungary

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