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T1 > PATH Network > Flashcards

PATH Network Flashcards

1
Q

SONET Cabinets:

Typical Field Layout

A
  • 15454
  • 15327
  • Netbotz
  • Fiber Optic Patch Panel
  • Power Supply
  • 2924 (Removed)
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2
Q

DWDM Topology:

DWDM A-Core PTCC

A

Loop 1 (5 Remote Sites) PTCC, Backus, WTC, EXCH, Grove

Loop 2 (11 Remote Sites) JSQ, NWPT, Hob, Cais 1, Mort, Chrst, 9th, 14th, 23rd, 33rd, 19th, Wash, PTCC

Loop 3 (6 Remote Sites) JSQ, NWK, Harr, Sub 14, Sub 8, Sub 7, Sub 6

*2nd Chassis for Loop 2 another cabinet.

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3
Q

DWDM CARDS:

A
  • Common Control Card
  • Optical - SMR40
  • Client Cards
  • Blank
  • Filter
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4
Q

Common Control Card:

2 TNC/1 LCD

A
  • Used for provisioning, maintenance, diagnostics.
  • Always 2 cards (FOR REDUNDANCY) and 1 LCD PER CHASSIS.
  • Stores node config on each card and LCD (3 places).
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5
Q

OPTICAL

( SMR40) ROADM

A
  • 40 Channel single module ROADM (Reconcigurable, Optical, Add, Drop Multiplexer) with integrated optical pre-amp.
  • Fiber connections to adjacent nodes
  • Always 2 per chassis for eastbound and westbound Fiber.
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6
Q

CLIENT CARDS:

Any rate and 10x10 muxponders

A

• For 10Mbps and 10Gbps Ethernet service.

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7
Q

BLANK CARDS:

Prevents Dust

A

Must be used at all times.

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8
Q

FILTER:

440

A
  • 4 Channels in the field.

* 40 Channels in the core.

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9
Q

DWDM - TNC CARD

OAMP

A
  • Timing, Communication and Control Card
  • Redundant Processing Card•
  • Management of MSTP Shelf
  • CTC Access
  • Node Database Config
  • Software
  • OAMP• (Operation, Administration, Maintenence and Provisioning of node.
  • Multi-Shelf Communication
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10
Q

ANYRATE MUXPONDER CARD:

4 x 2.5 Gbps

A
  • Transport 4 OC-48/STM16 payloads over one OC-192/STM64 100-GHz spaced wavelength.
  • At PATH we mux 4 (1 Gbps) client signals onto 2 (2.5 Gbps) wavelengths that drop into PTCC/HOBAN Network cores.o
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11
Q

10x10 CARD:

Cisco 10 Port, 10 Gbps line Card

A

10 Enhanced small form factor pluggable (SFP+)

• One 100Gbps Channel Express (CxP) port

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12
Q

DWDM - ONS 15216 MD-40 Filter (odd/even)

A
  • 40 Channel multiplexer/demultiplexer
  • Even/Odd channel option
  • Combine/Separate odd-even wavelengths
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13
Q

👍🏽 DWDM - Remote Site Filter:

4 chann. fixed wavelength filter

A
  • 4 Channel Fixed wavelength Filter.
  • 2 of each Filter in the field
  • 1 for Fiber to PATH PTCC
  • 1 for Fiber to PATH HOBAN
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14
Q

PATH CORE NETWORK:

Infrastructure

A
  • HOBAN (JSQ)

* PTCC (C-YARD)

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15
Q

LEGACY CORE TECHNOLOGY:

Old System

A

In process to be replaced

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16
Q

NEXUS CORE TECHNOLOGY

New System

A

In production, replacing LEGACY

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17
Q

✔️ PATH NETWORK PROVIDES:
(Critical Services)
S.S.F.

A
  • Signal Code
  • SCADA
  • Fare Collection

Connects to PA Network - PAWNET
Remote access and support for venders (Bus. Partners)

Complex mix of Remote Sites, up technologies, Transport technologies, Redundancy schemes.

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18
Q

PATH NETWORK COMPRISED OF:

A
  • 22 Remote Sites (Pass/Substations)
  • 2 Core Data Centers (PTCC/HOBAN)
  • PATH Facilities (Waldo Coin Room, McMillian)
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19
Q

PATH NETWORK “2 MAIN FUNCTIONS”:

A
  • Critical Infrastructure for (Signal Code, SCADA, Fair Collections, LENEL)
  • BackHauls (Non-Path Services) to our Core Data Centers.. Data handed to other network such as PAWNET.
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20
Q

PATH NETWORK LAYERS:

A.T.C.

A
  • Access Layers - Switches connected to end devices.
  • Transport Layers - SONET, DWDM Backhaul service from field to core Sites (PTCC to HOBAN).
  • Core Layers - Head End switches at PTCC / HOBAN (CISCO NEXUS 9504, 9372) A-B Sides redundant.
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21
Q

15327:

SIGNAL CODE

A

NORMAL NETWORK

22
Q

15454:

Signal Code

A

REVERSE Network

23
Q

OPAL/CUBIC FARE COLLECTIONS:

A

• Originates in field communicates across (15454 SONET) up to core at HOBAN

24
Q

PATH NETWORK COMMUNICATION or TRANSPORT:

A
  • Signal Code
  • SCADA
  • Fare Collections (OPAL/CUBIC)
  • LENEL
  • CCTV
  • PAWNET - Handreaders, workstations, VOIP, Phone / Voice Gateways.
  • Radio
  • Public Address
  • PAX
  • INTER-COMM
25
Q

PATH NETWORK MGMT:

CISCO Solar winds, NMS to monitor outages, traffic/patterns

A

Manage/Monitor PATH Network around clock from several locations.
• Con-Shop, NOC @ JSQ, Supervisors Office

26
Q

SONET:

A

(Synchronous Optical Network)

SONET is data converter, converts data into light to transmit over Fiber.

27
Q

SDH:

Synchronous DATA Heirarchy.

A

• Standard Protocol to transfer multiple data bits streams over Fiber (T1/Ethernet).

28
Q

PATH SONET TOPOLOGY:
(2 seperate ONS Data Network Rings)
3 per network = 6 Rings total

A

3 Rings per network = 6 Rings total

• Each Network arranged into 3 rings for 6 SONET rings (3 per network)

29
Q

DWDM:

Dense Wave Dividion Multiplexing

A

• Combines multiple inputs Into diff. Color single output wavelength channel.

30
Q

NETWORK RING:

A
  • Each ring is called a LOOP (3 LOOPS) LOOP 1,2,3

* Core DATA Centers involved in all 3 Rings

31
Q

PATH SONET TIMING/NTP:

A
  • High Accuracy Timing for SONET Networks (from CESSIUM BIT Clock @ HOBAN)
  • NTP - Network Timing Protocol for logging and other devices from 2 NTP Servers @ PTCC
32
Q

INVERTER:

A

DC to AC

33
Q

RECTIFIER:

A

AC to DC

34
Q

SONET POWERED:

(-48v DC) Both Sonets powered

A

Always 2 sources of power
• AC/DC Main source(HOUSE)
• UPS

35
Q

CISCO 2960 Switch:

2 in the field

A

Main Access Layer Switch

36
Q

NETBOTZ:

Environmental Device

A

Measures Temp/Humidity

37
Q

Services we Transport (NOT MANAGE):

A

PAWNET-FARE COLLECTIONS

38
Q

Cisco 15454 SONET

OC-48 Network

A
  • Higher Bandwidth SONET Network (Called 454 Network or OC-48)
  • Facilitates Ethernet/T1 Services.
39
Q

CISCO 15454 Cards:

A 
• Common Control
• AIC - Alarm Interface
• Electrical (-48v DC)
• Optical (OC-48, OC-192)
Ethernet Card (100Mbps - 1Gbps)
• TCC2 Card - Alarms (4 types of alarms)
Critical, Major, Minor, Remote
40
Q

OC-48 CARD:

2.5 Gbps

A

Connects Nodes in Field.

41
Q

ML CARD:

A

For Video and High Speed Ethernet.

42
Q

15327 SONET

OC-12

A
  • Obsolete,
  • Lower Bandwidth
  • For Ethernet and T1 Services
43
Q

PATH LAN NETWORK:

A

Encompasses the Access and Core Layers

44
Q

LAN - ACCESS LAYER

A

• 327, 454, DWDM all connect to access switches in the field (Cisco 2960).
• Always 2 of them labeled 2960-1/2960-2
Located in DCE-A/DCE-B cabinets.
• For all CLIENT connections.

45
Q

LAN - CORE LAYER

A
  • 2 Data Centers: HOBAN/PTCC
  • Each Data center has A side / B side.
  • Redundant Supervisory Cards/Power Supplies
  • Key Services and Access switches are “Dual Homed” to A/B sides of Data Center.
46
Q

GENERAL NETWORK INFO:

Speeds

A
  • Bandwidth measured in (bps)
  • Speed in Network - 10Mbps, 100Mbps, 1Gbps, 2.5Gbps,10Gbps, 40Gbps.. Diff rates means Diff fiber pluggables.
  • CAT5/6 have distance limit of 100m (use Ethernet to fiber extenders to overcome this)
  • Single Mode Fiber typically used.
  • Some Multi-Mode is used for DWDM clients in Data Centers.
47
Q

GENERAL PATH NETWORKS:

Power

A
  • Remote Comm rooms use 2 discrete power sources - “House and UPS“ Power.
  • SONET, DWDM, 2960s have dual power supplies.
  • Local UPS are at some sites for critical devices such as “SONET and LANTRONIX” for Signal Code.
48
Q

GENERAL PATH NETWORK:

Netbotz/Solar Winds

A
  • Tools to Manage and Monitor Path Network
  • NETBOTZ - environmental monitor for temperature and humidity (used everywhere we have SONET).
  • SOLAR WINDS is network monitor system for up/down status, temperature info via SNMP Ping protocols.
49
Q

PATH NETWORK SERVICES:

communications or transport only

A 
• SIGNAL CODE
• SCADA
• FARE COLLECTIONS (Opal, Cubic)
• LENEL
• CCTV
PAWNET (Handreaders, Workstations, VIOP Phones and VGs)
50
Q

66 Block 25 Pair Color Code:

A
  • ACROSS - Blue, Orange, Green, Brown, Slate.

* DOWN - White, Red, Black, Yellow, Violet

51
Q

CAT5/6:

“T568B” RJ45 Color Code

A
  1. W/O
  2. O
  3. W/G
  4. BL
  5. W/BL
  6. G
  7. W/BR
  8. BR

T1 (14 decks)

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