221 - Ceragon - IP-10G ABR - Presentation v1.2

8/18/2019 221 - Ceragon - IP-10G ABR - Presentation v1.2

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Proprietary and Confidential

FibeAir IP-10 G-Series

TDM Adaptive Band Recovery (ABR) Path Protection

®


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BW utilization with standard SNCP

A major drawbac of rin! topolo!y i" the allocation of red#ndant bandwidth in

order to en"#re networ availability$

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%or e&ample' the widelyimplemented

*CP +,+ #nidirectional protection

"cheme re-#ire" the "im#ltaneo#"

tran"mi""ion of information in bothdirection" on the rin!

Thi" ca#"e" a lo"" of #p to ./0 of the

rin!1" total bandwidth capacity2

Active Trail

Duplicated(Protective)

Trail

SNCP trails

consume double

BW, hence less is

available for ETH


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A novel approach to BW Efficiency

3 Cera!on1" %ibeAir 4P+/' i" capable of protectin! TDM "ervice" witho#tre"ervin! lar!e -#antitie" of bandwidth

3 Cera!on1" novel approach improve" the efficiency of rin!ba"ed protection'#"in! a techni-#e called Protected Adaptive Bandwidth Recovery (5ABR6)

which enable" f#ll #tili7ation of the bidirectional capabilitie" inherent in rin!technolo!ie"

3 4n the event of a fail#re' the "y"tem revert" bac to "tandard *CP and the#n#"ed capacity i" reallocated for TDM tran"mi""ion

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A novel approach to BW Efficiency

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8ith ABR' the TDMba"ed information

i" tran"mitted in one direction only'

while the #n#"ed protection capacity i"

allocated for 9thernet traffic

Active Trail

!used or "Pe!di!#$S%&P trail capacit' is

allocated or T*services


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ABR :peration


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ABR SNCP Operation

The ABR feat#re con"i"t" of the followin! component"$

+; i!nalin! i" di"trib#ted between the endpoint" of every trail point to

e&chan!e information abo#t the -#ality of the received "i!nal"


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ABR SNCP Operation: Sinalin

i!nalin! i" di"trib#ted between the endpoint" of every trail point to e&chan!e

information abo#t the -#ality of the received "i!nal"

3 9ach endpoint may "end an RD4 "i!nal alon! each path (primary and

"econdary) to the other end point

3 RD4 i" "ent whenever a valid TDM trail "i!nal i" not received

,

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ABR SNCP Operation: !oics

=o!ic determine" in which ca"e" traffic can or cannot be "ent thro#!h one of

the path"$

3 @nder normal condition"' TDM traffic i" "ent only thro#!h the primary path

3 4n order to mae proper #"e of the freed capacity' it i" nece""ary for the 9thernettraffic to #"e the "ame path in both direction"

3 %or thi" rea"on' any fail#re in the primary path will ca#"e both "ide" to revert tothe normal mode of operation ("endin! traffic thro#!h both path"); Traffic will

ret#rn to the primary path after the fail#re condition ha" been cleared (themechani"m i" revertive)

3 4n order to prevent jitterin! of the path and #nnece""ary traffic "witche" in ca"e ofintermittent primary path fail#re"' there i" a revertive timer; Thi" timer determine"

the amo#nt of time re-#ire after no fail#re i" detected in the primary path before

cea"in! traffic tran"mi""ion thro#!h the "econdary path

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ABR SNCP Operation: Auto BW Release

Auto"atically freein #andwidth whenever $%& traffic is not #ein sent:

3 8henever valid TDM traffic i" not available at the radio interface for tran"mi""ion'it" bandwidth i" a#tomatically reallocated for 9thernet traffic

3 Thi" i" relevant not only for ABR trail"' b#t for all $%& traffic' 4n other word"'bandwidth i" freed #p whenever there i" no information to tran"mit; Thi" may

occ#r in the followin! circ#m"tance"$

+; A fail#re ha" occ#rred which interr#pt" TDM traffic in a certain trail; Thi"

may tae place in a radio lin or an internal connection; A4 "i!nal i" detected at the inp#t (if A4 detection feat#re i" enabled)

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ABR SNCP Operation: Receivin Standard SNCP

Selectin the inco"in traffic nor"ally as e(plained for SNCP trails:

3 The ABR mechani"m i" relevant only for the tran"mi""ion

3 Reception i" dealt with in the "ame manner a" normal *CP trail"

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ABR Confi!#ration



ABR SNCP Confiuration

A new type of trail" (ABR trail") i" defined' in addition to protected and#nprotected trail";

ABR trail" are confi!#red e&actly in the "ame way a" normal *CP trail" and

are "#bject to the "ame validation"; Thi" i" beca#"e in the wor"tca"e (fail#re

condition) ABR trail" behave lie normal *CP trail"' occ#pyin! bandwidth in

both path";

The followin! are e&tra confi!#ration and behavior e&cl#"ive for ABR trail"$

3Revertive ti"er $ the "ame timer i" #"ed for all trail"

3)orcin ABR trails$ when forcin! reception of an ABR trail from the "econdary path the"y"tem will a#tomatically ca#"e both endpoint" to tran"mit traffic thro#!h that path'

re!ardle"" of fail#re condition"; The traffic will cea"e to be "ent when 5force none6 i"

confi!#red

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ABR SNCP *ser +ndications

The followin! indication" are added for TDM trail"$

3 RD4 indication i" !iven per trail to the #"er

3 eparate "tat#" indication" are !iven for each path$

3 %or *CP trail"' "tat#" i" alway" !iven for primary and "econdary path"

3 %or ABR trail"' "tat#" i" !iven for path" which are c#rrently tran"mittin! with nofail#re condition" thi" mean" the primary path only;

3 PM" are collected a" follow"$

+; Primary i" active *o PM co#nted on "econdary;


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Thank You !

trai!i!#/cera#o!co

221 - Ceragon - IP-10G ABR - Presentation v1.2

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Transcript of 221 - Ceragon - IP-10G ABR - Presentation v1.2