I have a layer 3 OOB Nac Profiler Deployment and i am trying to profiler some IP Phones from a remote location using the ip helper-address statement on the voice interface on the remote router. The problem is that the remote router is acting like a dhcp server for the voice vlan and does not forword the DHCP discover to NAC colector and i can't profile the ip phone. Do you know a way(a configuration command on the router ) to forword the dhcp even if the router acts like a DHCP server for that vlan?
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I have confiured a new setup with profiler 3.1.1 with DHCP vendor class using RSPAN option for profiling and could not find profiling is happening in a perfect manner. Problems experienced like long time taken for profiling (ex.4 days for almost 100 ip phones) also i am suspecting RPAN problems with few of the switches as though its spread over distant locations and peculiar uplink combinations. To avoid explained rspan problems I am gonna try DHCP vendor class with ip helper address applied on voice and data svi's. I am going to create an svi for this purpose on the core switches with hsrp ip and gonna apply one ip adress on each primary and secondary collector eth3 ( earlier configrued RSPAN destination). And these two ip adresses of eth3 of primary and secondary collectors will be listed in voice/data gateway svi. Is this a correct logic.. will be glad to receive a comment on this..!