Radwin 2000+ SERIES - Chapter 11: Hub Site Synchronization over Ethernet

RADWIN2000+SeriesUserManual Release4.2.40 11‐1
Chapter11:HubSite 
SynchronizationoverEthernet
11.1ScopeofthisChapter
ThischapterdescribesEthernethubsitesynchronization(EHSS),andhowtoimplementit.
11.2RADWINEthernetHSS
11.2.1EthernetHSSRequirements
TheRADWINEthernetHubSiteSynchronization(HSSoE)methodprovidesintra‐site
synchronizationwithouttheneedforexternalcablesoranHSSunit.Syncsignalsare
exchangedbetweencollocatedradiosovertheregularEthernetconnection.
TheEthernetHSS(HSSoE)methodrequiresLayer2Ethernetconnectivitybetweencollocated
ODUs.Ithastworequirements:
• CollocatedODU
sproviding Ethernetservicesonly,shouldbeconnecte dtoanIDU‐H/
HPinsteadofregularPoEdevices.Othersimpleswitchesmayworkwithdegraded
performance.Theyarenotrecommendedandproblemsarisingfromtheirusewill
notbeeligibleforanykindofsupport.
• CollocatedRADWIN2000+SeriesclassODUsprovidingE1/T1servicesshouldusean
IDU‐CorIDU‐EandthenbeconnectedtoanIDU‐H/HPfunctioningasaswitch.One
oftheLANportsontheIDU‐CorIDU‐EisconnectedtoanyofthesixIDU‐H/HPPoE
portsorthetwoLANport
s.(ThisispossiblebecausetheIDU‐CorIDU‐ELANcable
onlyusesfourpinsfordata;thepowerpinsarenotusedsothereisnoriskofdam‐
agetothem.)Inthisway,uptoeightsuchODUsmaybecollocated.
IfyouareusinganIDU‐C0(GbE)itmustbeconnectedtotheIDU‐H/HP
LANportonly.ConnectingittotheP0Eportswilldamagetheunitandin
anyevent,itwillnotwork.