1 Reply Latest reply on Sep 21, 2012 6:29 AM by stephen.black

    NTA and WAN Optimization-incorrect information reported

    ge0rge

      Hi,

      recently we have installed Cisco WAN optimizers (WAE devices) at our branch offices and the head office as well.

      The WAN optimizers are connected to the WAN routers through the LAN switch on a separate VLAN (router on a stick configuration). At the branch offices, that is.

      The MPLS (WAN) routers redirect the inbound and outbound traffic to the WAN optimizers using the WCCP protocol which effectively automatically creates Tunnel0,Tunnel1 and Tunnel2 interfaces on the routers.

      Netflow version 9 (both directions Ingress/Egress) has been enabled on the WAN, and LAN inerfaces (router on a stick).

      The issue:

      NTA is not reporting correct information. The WAN link is a 10Mbps line. NTA reports traffic running at 20Mbps and more over that link. Technically it is not possible.

      I am wondering whether it has to do with this:

      http://www.plixer.com/blog/scrutinizer/netflow-version-9-egress-vs-ingress/

      and whether there is anything we can do to change it  and make NTA report correct information. Currently we cannot depend on it.

      Many thanks for your ideas,

      ge0rge

        • Re: NTA and WAN Optimization-incorrect information reported
          stephen.black

          Did you ever get any answers on this issue? We too are seeing the same incorrect info from Orion when we compare it against the actual reports from the Riverbeds. Since we want to mvoe to Orion as our be all end all for monitoring and reporting it is really important I find out how to fix this report. Any help would be most welcomed. Thanks in advance.

           

          Just to confirm, we are seeing negative numbers for the %s in the reprots when the Riverbed reports show positive values. The Riverbed is correct.