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![]() HP OpenVMS Systemsask the wizard |
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The Question is: I want to estimate the amount of network trafic that will be generated through the implementation of DNS on out WAN's and LAN's. At this moment the mainly used network protocol is DECnet phase IV and in the next two years we will migrate to TCP/IP. I thought that I should gather (for each node): the number of created connections and/or the number of times that the NCP database hase been asked for a DECnet adres, in a particular periode. Can you tell if these counters exist and how to do that? Thanks in advance, Jos Hollaar The Answer is : The data on the requests that you seek are generally not tracked in the DECnet counters (connection counters are available), and -- given the more common use of IP DNS on more recent DECnet and on IP networks, and particularly given the caching and even the use of local IP and DECnet host databases -- not particularly useful in determining the expected network load for name serving operations. Further, the Wizard would also be more far concerned with the latency of DNS requests, rather than the bandwidth consumed -- you can also use local DNS servers to reduce the general latency, and this also has the benefit of keeping more of this traffic on the local network segments. More detailed research will likely involve a far more detailed look at your network, with considerations around the particular scale of your network, the current and expected network communications links, the current and expected growth patterns, at security and monitoring requirements, and at a variety of other considerations.
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