NetAgent

Dns dash

Dns dash                                                        >>Japanese Page

A rugged tool for survival in the extreme-bandwidth era

Dns dash is a system to greatly increase the capacity of your DNS server. Installed in the upstream of a DNS server, it acts as a network bridge and accelerate the whole DNS traffic.

Dns dash maintains a table linking "request from clients" and "response by the DNS server" together. Upon receiving a DNS request from a client, it looks up in the table and respond to it on behalf of the back-end DNS server, and does it much quicker. Dns dash is meant to be a totally new approach to meet with the demand of ever faster data communication, namely the NGN, in the forthcoming society.

Dns dash advantages

Once you installed Dns dash, you would surely be surprised at the drastically improved performance of your DNS server. It is obviously far more cost-effective, space-effective, and environmentally friendly, all at the same time, than to add a squadron of redundant DNS servers.

Dns dash is highly efficient, easy to install, simple to operate, robust even in case of sudden blackout or software-induced malfunction.

Dns dash will help you effectively cope with the next generation of large-bandwidth network.

Benchmark: ordinary DNS server (BIND9.4) and Dns dash

  • CPU:Dual Core Intel(R) Xeon(E3110) 3GHz (45nm process)
    2nd Cache 6MB ECC (full-speed)
  • memory:1GB
  • NIC:Broadcom 5722

Dns dash specifications


Dns dash caches and relays first simple queries to the back-end DNS server, and then substitutes it the next time on. Dns dash does not bother with complicated queries or zone transfer, and just relays them to the back-end DNS server.


  • Large scale web portals
  • Domain administrators

  • EtherGazer automatically bypasses the traffic to back-end DNS server in case of blackout or software-induced malfunction of Dns dash.

Dns dash is efficient because it concentrates upon simple queries; it caches and instantly responds to simple but frequent queries, whereas it shruggs off complicated and less frequent ones.

  • No Logging
  • Interlaced Packet Logging
  • Debug Logging
  • Graph
    ※ "No Logging" setting is recommended for best performance.

【What is the DNS (Domain Name System) ?】

DNS is a kind of database system to relate the host names (names attributed to machines connected to the network) or domain names (unique names attributed to computers on the internet) to the corresponding IP addresses.
To put it another way,

Suppose you visit a website "http://www.example.jp" with your web browser. The contents of the website is actually stored in a web server connected to the internet, but it does not mean that the webserver literally has a name "http://www.example.jp" with it. Every single server on the internet is assigned a fixed unique global IP address. Then there exists a residence registry showing that Mr. "http://www.example.jp" is living under that IP address. This registry is maintained in the municipal office, which is the DNS server.

If a webmaster decided to move his contents to a larger web server, he has only to notify the municipal office to guarantee that the visitors are guided to the right alternative place.

Therefore, you would see an error message "Can't find www.example.jp: Server failed" on your browser screen, or would find your e-mail messages clogged in your Outbox, should an overloaded DNS server fail.
In such a case, the internet would end up virtually useless.

References

Software packages or pre-installed appliances

Active stand-by: 24h on-site maintenance (guaranteed arrival in 2 hours / 4 hours)

Phone: +81-3-5625-1243
E-mail:info@netagent.co.jp