????????????????????????????????????????????????????????????????????????????????????????????

??????? Allied Telesis ???? AT-x900-24XT ??? AT-x900-24XS ??????????? High End Core/Aggregate Switch ?????????????????????????????????????????????????????????????????????????????????????????????????????? ????????????????? Multimedia Application (Data, Voice and Video: Triple Play)

??????????????????????????????????????????? OSI Layer 3 ??? IPv4 ??????????? Wire Speed ?????????????????????????????????? IPv6 ??????????? Wire Speed ????????????  ????????????????????? Performance ????????? ????????????????????????????????????? Reliability ????????????????????? ?????? Feature ????? ??????????????????????????????

???????????????????? AT-x900-24XT ??? AT-x900-24XS ????????? Aggregation Switch ???? ?????????????????????????????? Core Switch ?????????? ????????? AT-x900-24XT ??? AT-x900-24XS ????????????????? Redundant Power Supply ??? ??????????????????????? Stack ??? ??????? Redundant ??????????????????? Switch ??????????????? Stack ??????????????????? ??????????????????????? ??????? AT-x900-24XT ??? AT-x900-24XS ?????????????????????????? Ring Network (Ring Topology) ?????? 10 Gigabit Ethernet Module ??????  EPSR (Ethernet Protected Switch Ring) Feature ????????????????? ????????????????????????????????? Fail Over ???????????????? 50 ms

??????????????????????????????????????????? ?????????????????????????????? ?????????????????? Feature ????? ??????????????? IPv6 ?????????????????????????? ???? Application ????? ?????????????????????????????? ???????????????????????????????????????????????????????? (Existing Network) ???????????????????????????????????????????? Migration ??????????? (IPv4 Network) ????????????? (IPv6 Network) ??????????????  ?????????????????????????????????? VLAN Double Tagging (Q-in-Q) ??????????????? VLAN ??????????????? ????????????????????????????????? Metro Ethernet ?????? Service Provider ????????????????????????????????????????

Features:

         Ports Capacity :: 24 x 10/100/1000Base-T (RJ-45) and 2 x 30 Gigabit Expansion Bays; 1 x 10GbE (XFP), 12 x 1000Base-X SFP ports and 12 x 10/100/1000Base-T

         Performance :: ?????? L2&3 IPv4 & IPv3 Routing at Wire Speed; 150 Gbps Switch Fabric, Forwarding Rate at 71.4 Mpps, ???????????? L3 address Table ????????? 256K Entries 16,000 MAC Addresses ????????????????????????? Jumbo Frame ?????? 9 KBytes

         VLAN :: ???????????? VLAN ?????? 4096 VLANs ???????????????????? VLAN Double Tagging

         Reliability :: ???????????? Redundant Power Supply ?????????? Load Sharing, ??????????????????????????????????????? 50 Celcius ???????????????????? Stacking ???

         QoS :: ??????????????? 8 Egress Queue ???????????, 3 Drop Precedence (Green, Yellow & Red) ??????????? Priority Queue ??? Egress, ??????????? Per Flow Bandwidth Limiting ????????? Limit ?????? 1 Kbps

         Routing Protocol :: ???????????? RIP, RIPv2, OSPF, BGP4, DVMRP, PIM-SM and PIM-DM ??? Routing Protocol ?????? IPv6 ???? RIPng