It's the time of year when we get to give thanks, spread cheer and good wishes to all of you.
This has been a year full of exciting changes for Garland Technology - and all of us know that the reason for our success is because of you.
I hope you take a moment to enjoy our holiday video.
From us to you, Happy New Year! * Kul 'am wa antum bikhair * Urte Berri on * Sun nien fai lok * Xin nian yu kuai * Stastny Novy Rok * Godt NytÅr * Gelukkig nieuwjaar * Onnellista uutta vuotta * Bonne année * Ein glückliches neues Jahr * Eutychismenos o kainourgios chronos * Hauoli Makahiki hou * Shana Tova * Boldog uj evet * Selamat Tahun Baru * Felice Anno Nuovo or Buon anno * Akemashite Omedetou Gozaimasu * Sehe Bokmanee Bateuseyo * Nyob Zoo Xyoo Tshiab * Felix sit annus novus * Barka da sabuwar shekara * Godt Nytt År * Manigong Bagong Taon * Szczesliwego Nowego Roku * La Multi Ani si Un An Nou Fericit * Feliz año nuevo * Heri za Mwaka Mpya * Gott Nytt År * Sawatdee Pi Mai * Chuc mung nam moi * Blwyddyn Newydd Dda
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If the inline security tool goes off-line, the TAP will bypass the tool and automatically keep the link flowing. The Bypass TAP does this by sending heartbeat packets to the inline security tool. As long as the inline security tool is on-line, the heartbeat packets will be returned to the TAP, and the link traffic will continue to flow through the inline security tool.
If the heartbeat packets are not returned to the TAP (indicating that the inline security tool has gone off-line), the TAP will automatically 'bypass' the inline security tool and keep the link traffic flowing. The TAP also removes the heartbeat packets before sending the network traffic back onto the critical link.
While the TAP is in bypass mode, it continues to send heartbeat packets out to the inline security tool so that once the tool is back on-line, it will begin returning the heartbeat packets back to the TAP indicating that the tool is ready to go back to work. The TAP will then direct the network traffic back through the inline security tool along with the heartbeat packets placing the tool back inline.
Some of you may have noticed a flaw in the logic behind this solution! You say, “What if the TAP should fail because it is also in-line? Then the link will also fail!” The TAP would now be considered a point of failure. That is a good catch – but in our blog on Bypass vs. Failsafe, I explained that if a TAP were to fail or lose power, it must provide failsafe protection to the link it is attached to. So our network TAP will go into Failsafe mode keeping the link flowing.
Glossary
Single point of failure: a risk to an IT network if one part of the system brings down a larger part of the entire system.
Heartbeat packet: a soft detection technology that monitors the health of inline appliances. Read the heartbeat packet blog here.
Critical link: the connection between two or more network devices or appliances that if the connection fails then the network is disrupted.
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