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I am not able to find information on BHH; I got this link to draft-bhh-04 but was not able to understand the operation/function of BHH.

If you guys have any info on above topics please let me know.

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    Please be clearer with your question. If you just want links to more information, use a search engine. If you want to ask a question about BHH operation, then please make it clearer in your question.
    – Baldrick
    Jul 30, 2013 at 12:30
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    ...voting to leave open; 30 seconds on google and I couldn't find anything about BHH apropos of networking. Jul 30, 2013 at 18:01
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    While this isn't a common topic, there really isn't a question here. Please re-edit to give more detail about what you are trying to do and to ask specific questions. I will vote to close for now, but will vote to re-open if the question is edited in this way.
    – YLearn
    Jul 30, 2013 at 18:07
  • @YLearn, AFAICT the OP is asking how BHH is supposed to work Jul 30, 2013 at 18:09
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    @MikePennington, I did get that was the general idea (and you have provided a nice answer, btw), but it isn't clear if he is looking for theory, practical application, configuration assistance, etcetera? "If you guys have any info on above topics please let me know" is not a very clear question on what he is looking to get from this post.
    – YLearn
    Jul 30, 2013 at 18:18

1 Answer 1

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I am not able to find information on BHH; I got this link to draft-bhh-04 but was not able to understand the operation/function of BHH.

We are stepping into territory that is very divisive and opinionated. My intent is just to provide information about the question. A very good overview of all the issues (from a US carrier's perspective) can be found in Andrew Malis' MPLS-TP presentation.

BHH:

draft-bhh refers to an MPLS-TP fault-signalling approach that uses ITU-T Y.1731 OAM signalling that the ITU added to the original Ethernet OAM (IEEE 802.1ag) standard. draft-bhh is endorsed by China Mobile, China Telecomm and Telecomm Italia as their preferred solution to a very long and involved battle over industry standards; ZTE / Huawei / Alcatel already support implementations of draft-bhh (and the aforementioned carriers already have their equipment). It is supposed to comply with RFC 5860 - MPLS-TP OAM Requirements and it falls under ITU-T G.8113.1.

Bonus material: BFD

The competing proposal to draft-bhh is ITU-T G.8113.2, which is based on BFD + other fault isolation / management protocols. This approach is favored by many US carriers, but vendor implementations are still baking. There have been some demonstrations of the technology by Cisco / Ixia.

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