09-25-2007 07:35 AM
Hello,
I have to loadbalance DNS requests.
I tried to start a configuration but I didn't find anything about L3-4 load balancing or maybe I didn't understand it. I only found L7 http or ftp load balancing.
I issued this :
class-map match-any L4_DNS
description "Match traffic for DNS VIP on tcp port 53"
2 match virtual-address xx.xx.xx.xx tcp eq domain
policy-map type loadbalance first-match L7_DNS_SLBPolicy
description "Load balancing Policy"
class class-default
serverfarm DNSSrvs
policy-map multi-match L4_DNS_SLBPolicy
class L4_DNS
loadbalance vip inservice
loadbalance policy L7_DNS_SLBPolicy
loadbalance vip icmp-reply active
loadbalance vip advertise active
I am not sure this will work...
Does anybody have an idea or a valid L3-4 loadblancing configuration for ACE ?
Regards.
09-25-2007 08:41 AM
why do you think this is l7 ???
this is a standard l4 rule.
It should work.
Gilles.
09-25-2007 09:05 AM
Hi,
I was confused. i read this in the Documentation:
loadbalance first-match :
Specifies a Layer 7 policy map that defines Layer 7 HTTP server
load-balancing decisions. The ACE executes the action for the first
matching classification. For a list of classes in a policy-map, the
actions associated with the first class that matches the packet are the
actions that the ACE executes on the packet. For information about
the commands in policy map load balance configuration mode, see
the ?Policy Map Load Balancing Configuration Mode Commands?
section.
But maybe I didn't understood the concept of a Layer 7 policy map.
Regards.
09-25-2007 11:55 PM
actually the documentation and the config hint are both confusing because they call everything L7.
But the config is correct and L4.
Gilles.
09-26-2007 12:50 AM
Thank you for your reply.
Regards.
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