Radwin 2000 D+ - Page 133

RADWIN2000D+UserManual Release3.6.00 11‐1
Chapter11:HubSiteSynchronization
overEthernet
11.1RADWINEthernetHSS
11.1.1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ODUsprovidingEthernetservicesonly,shouldbeconnectedtoanIDU‐H
insteadofregularPoEdevices.Othersimpleswitchesmayworkwithdegradedper‐
formance.Theyarenotre commendedandproblemsarisingfromtheirusewill not
beeligibleforanykindofsupport.
• CollocatedRADWIN2000classODUs
providingE1/T1servicesshoulduseanIDU‐Cor
IDU‐EandthenbeconnectedtoanIDU‐H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PoEportsorthetwo
LANports.(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ther eisnoriskofdamagetothem.)Inthis
way,uptoeightsuchODUsmaybecollocated.
Note
YoumayonlyuseoneIDU‐H.Thatis,theymaynotbecascaded.
Caution
IfyouareusinganIDU‐C0(GbE)itmustbeconnectedtotheIDU‐HLANport
only.ConnectingittotheP0Eportswilldamagetheunitandinanyevent,it
willnotwork.