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Author Topic: SDH or SONET  (Read 4609 times)

MikeBou

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SDH or SONET
« on: April 20, 2011, 10:37:15 AM »
Anyone out there willing to discuss SDH/Sonet and integrating tributaries?

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jeffbb

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Re: SDH or SONET
« Reply #1 on: April 22, 2011, 11:09:04 AM »
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MikeBou

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Re: SDH or SONET
« Reply #2 on: April 22, 2011, 02:47:59 PM »
Hey Jeffbb,
Thanks for that mate. Have read them before, but nice of you to point them out.
At the minute I'm looking to see how and if you can integrate a DSL connection into an SDH ring. Cant see why a business would have to fork out a lot of money to get a SDH ring between it's main business sites and then pay extra for a separate and very fast connection to handle multiple VPN connections over DSL from home based employees.
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xreyuk

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Re: SDH or SONET
« Reply #3 on: June 17, 2011, 02:43:09 PM »
Can you integrate DSL into SDH?
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AdrianH

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Re: SDH or SONET
« Reply #4 on: June 21, 2011, 06:38:23 PM »
Quote from: purvin on June 21, 2011, 05:45:26 PM
Packet over SONET/SDH, abbreviated POS, is a communications protocol for transmitting packets in the form of the Point to Point Protocol (PPP) over SDH or SONET, which are both standard protocols for communicating digital information using lasers or light emitting diodes (LEDs) over optical fibre at high line rates. POS is defined by RFC 2615 as PPP over SONET/SDH. PPP is the Point to Point Protocol that was designed as a standard method of communicating over point-to-point links. Since SONET/SDH utilises point-to-point circuits, PPP is well suited for use over these links. Scrambling is performed during insertion of the PPP packets into the SONET/SDH frame to solve various security attacks including denial-of-service attacks and the imitation of SONET/SDH alarms. This modification was justified as cost-effective because the scrambling algorithm was already used by the standard used to transport ATM cells over SONET/SDH. However, srambling can optionally be disabled to allow a node to be compatible with another node that uses the now obsoleted RFC 1619 version of Packet over SONET/SDH which lacks the scrambler.




Copied/pasted from Wikipedia and no acknowledgement given  >:(
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roseway

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Re: SDH or SONET
« Reply #5 on: June 21, 2011, 06:41:53 PM »
Thank you Adrian, that confirms something I suspected.
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  Eric

AdrianH

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Re: SDH or SONET
« Reply #6 on: June 21, 2011, 06:45:54 PM »
No problem , spammers are all the same ......... stupid.
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