Creating VLAN services in TJ1400 OLT

Shine B Joseph, SSE(Tele)TVC Division, Southern Railway

Optical Line Transmission Equipment (OLTE ofmake: TEJAS TJ1400-1) was installed by TATAEducation and Development Trust (TEDT) jointlywith RailTel Corporation of India Limited(RCIL)for WiFi based Internet Access Service at 4791 ClassB, C, D & E Railway stations across PAN Indiausing one spare Fiber of Railways in the year 2019.

TEJAS TJ1400-1 OLTE is equipped with 8 numberof GPON ports and 6 number of Optical EthernetService ports. Amongst the 8 number of GPONports, one port is connected to the Optical NetworkTerminal (ONT of make: TEJAS 2100N) GPONEquipment for APs (Access Points) installed atPlatforms. The 6 number of Optical Ethernet portscan be either configured to 2 X 10G ports + 4 X 1Gports or 2 X 1G ports + 4 X 10G ports, Of which bydefault, two number of 10G ports are used to con-nect both end fibers and remaining ports are left idle.

Among the remaining four 1G ports each port canbe connected between two stations and can be pro-grammed as E-Line for transporting the any Ether-net based circuits between stations via OLTE.

Figure 1:

Possibilities of TJ1400 OLT

� 1400-1 OLT is having 6 SFP network uplinkports

� Configured as 2x10G + 4x1GE ports

� Port P2 & P4 configured as 10GE port

� Port P1, P3, P5 & P6 configured as 1GE portby default

� Port P2 and P4 used for Network Uplink

� Ports P1, P3, P5 & P6 can be utilized for Pointto Point/Multipoint services within TJ1400-1network to a maximum of 1GE capacity withadditional SFP’s and media converters

� Media level protection can be planned for exist-ing Ethernet circuits

Testing and implementation

� In Trivandrum Division of Southern Railway,Ambalappuzha (AMPA) and Cheppad(CHPD)was identified and assigned for program-ming/testing/configuration of TJ1400-1 OLT

� An ELAN point to point service was cre-ated between AMPA and CHPD carryingDTES(Division Train Enquiry System) Ether-net circuit

� DTES circuit was tested from CHPD station upto TVC Division HQ office server via TJ1400-1OLT

� Port P3 was used at both stations for the pro-gramming of ELAN

� Dual fiber SFP and media converters were usedat AMPA and CHPD for achieving the connec-tivity.

� Port P2 at AMPA and CHPD was configuredas Uplink for network connectivity with 10GEBandwidth

Programming of TJ1400-1 OLT

Programming of TJ1400-1 OLT at AMPA sta-tion

� After logging into TJ1400-1 OLT select L2 ser-vice¿ Service Switch-1¿ Port Configuration

� Configure Port P3 (ETH 1-1-3) as local connec-tivity to media converter

� Edit physical parameter of P3 to

– Admin Status “Up”

Figure 2:

– Manual Speed Settings (Mbps) to “100”(same as media converter speed)

– LAN Circuit Identifier “AMPA-CHPDDTES Test”

Figure 3:

� Edit Switching parameter of P3 to

– Port Type “802.1q port dot1q port”

– Port Mode “Regular mode”

– Port VLAN ID “200”

– Acceptable Frame Policy “Accept All”

Figure 4:

� Go to L2 service¿ Service Switch-1¿ Service pro-visioning to set Flow Point Template and ELANservice

� Create new Flow Point Template with

– Flow Point Template Description “ AMPA-CHPD DTES”

– FP Template Type “CVLAN”

– CVLAN Range “200”

Figure 5:

� Create new ELAN services with

– Service name “ AMPA-CHPD DTES”

– Forwarding Type “CVLAN Forwarding”

– CVLAN Range “200”

Figure 6:

� Select “AMPA-CHPD DTES” ELAN services

� Add new Flow point

– FlowPoint Type “dot1q Interface”

– Type of Traffic flowing through this Flow-Point “Data Traffic”

– Interface “ETH 1-1-3” (port P3 withVLAN ID 200 added to FP Template)

– FlowPoint Template “AMPA-CHPDDTES”

� Select “AMPA-CHPD DTES” ELAN services

� Add new Flow point

– FlowPoint Type “dot1q Interface”

– Type of Traffic flowing through this Flow-Point “Data Traffic”

– Interface “ETH 1-1-2” (port P2 with net-work Uplink towards CHPD side is addedto FP Template)

Figure 7:

Figure 8:

– FlowPoint Template “AMPA-CHPDDTES”

� Select “AMPA-CHPD DTES” ELAN services

� ETH 1-1-3 (Port P3) and ETH 1-1-2 (Port P2)are added to “AMPA-CHPD DTES” ELAN ser-vices

Figure 9:

� The same programming has to be configured atCHPD station with Port P2 as network Uplinkto AMPA side and Port P3 as local connectivityto media converter

� @ AMPA:

– DTES circuit was extended to TJ1400-1OLT port P3 from STM16 Tejas equipment

CEF card and connected to CHPD via PortP2.

� @ CHPD:

– CHPD network Uplink is connected viaPort P2 of TJ1400-1 OLT towards AMPAside. DTES network was dropped at PortP3 in TJ1400-1 OLT and connected to Lap-top

� DTES server (IP address: 172.31.0.18) installedat Trivandrum Divisional Office was pingedsuccessfully from CHPD Laptop (IP address:172.31.6.51)

Shri Shine B Joseph ,Senior Section Engineer,Ernakulam, , TVC Di-vision Southern Railway.Presently working as Se-nior Section Engineer atErnakulam, TrivadrumDivision, Southern Railwaywith qualification of B-Techin Electronics and Commu-nication from Cochin University. I worked as JuniorEngineer at Chennai Division from 2006-2012 as incharge at Arakkonam-Renigunta section, worked asJE at Ernakulam section for 4 years and as SSEIncharge at Alleppey section of TVC Division for 4years.

I have done the testing, Programming & Configu-ration for the transport of Ethernet circuits upto10Gbps bandwidth in ALLP section via OLTEs pro-vided for WiFi purpose at stations, the same can bedone between any two locations in Indian Railwaywhere the 4000+ OLT equipment’s are installed forWiFi-based Internet Access Service using one spareFibre of Railways in 2019. Efficient 10Gbps band-width utilization can be accomplished for own cir-cuits of Railways without any additional hardwareand financial consequences, as many as 4000+ (Te-jas TJ1400) OLTEs are installed through the IndianRailways as part of the CSR scheme of TATA Edu-cation and Development Trust (TEDT) jointly withRailTel Corporation of India Limited (RCIL).