ALC+2 Training Slide

(1)

ALCplus2 1

ALCplus2

ACM radio link

(2)

Training items

1. ALCplus2

2. SCT or WEBLCT console

3. WEB LCT commands

(3)

ALCplus2 3

IDU

(4)

(5)

ALplus2/ALCplus2 5

ODU

AL plus and ALC plus Copyright Siae Microelettronica S.p. a.

8

ODU

AS 03 edition

ASN

Unprotected ODU 1+1 ODU

(6)

ALCplus2 Connectors

16 E1 75/120 STM1 (1+0/1+1) LAN 2, 4 LAN 1, 3 RJ45 management LAN 3, 4 (optical) Nodal bus ODU cable -48Vdc (in parallel)

Power supply Fuse USB

Alarm LEDs:

URG, NURG, SW, TEST, power ON

(7)

ALCplus2 7

Connection to equipment

• LAN –

using an internet browser with the MNGT port address

• USB/RS232 –

using a serial connection using the

WebLCT Console (on SIAE site: http://siaemic.com and, after the login, Download area, Software, WEB LCT). The connection address is assigned by the equipment itself) with LCT port or RS232 port.

(8)

(9)

ALCplus2 9

(10)

Management ports

1/2

Traffic ethernet ports can be used for management (in a separated VLAN)

(11)

ALCplus2 11

Management ports

2/2

EOC can arrive to IDU also through a Trib A or Trib B

using a timeslot (…slow)

In case of both equipments (loc. and rem.) in the same LAN

(12)

WEB LCT

SCT: Equipment menu WEB LCT main menu is similar to SCT Equipment menu.

(13)

ALCplus2 13

Remote element list

In order to have the whole link in one page only, local equipment is declared “managed by SCT”, remote one is declared “remote link”. Opposite configuration on remote side.

172.18.81.20 WEBLCT

172.18.81.22 WEBLCT

172.18.81.20 172.18.81.22

Local Local

(14)

ALCplus2 status display

local alarms activity name and hardware Rx active branch Tx and Rx ACM profiles TDM capacity ethernet capacity RF channel and frequencies Tx and Rx power Tx active branch connection IDU C°

(15)

ALCplus2 15

WEB LCT: equipment configuration

Configuration ACM setting Alarms thresholds, Tx and Rx switches RF channel Tributaries

(16)

(17)

ALCplus2 17

ALCplus2 Node connections

IDU 1 NB1 NB2 IDU 2 NB1 NB2 IDU 3 NB1 NB2 IDU 8 NB1 NB2 Max 8 LAN 1 LAN2 LAN 1 LAN2 LAN 1 LAN2 LAN 1 LAN2 . . .

From LAN 1 of IDU8 From NB1 of IDU8

To LAN 2 of IDU1 To NB2 of IDU1

Node Traffic transport: TDM (E1)  Nbus cable LAN  LAN cable Max 8

LAN1 and LAN2 are used for cabling

(18)

ALCplus2 node manager (SCT only)

Example: 4 idu node

IDUs IDUs connected through NBus Commands IDUs connected through LAN

(19)

ALCplus2 19

Nodal matrix

It’s a logical matrix relevant a logical IDU made up by the

physical IDUs

The cross connections between IDU_x and the Nbus and Nbus and IDU_x+1 are automatically performed

(20)

(21)

ALCplus2 21

(22)

Nodal Port based VLAN

Connections are bidirectional automatically

(23)

ALCplus2 23

Node VLAN table

(24)

(25)

ALCplus2 25

Ethernet ports of the IDUs of the node

LAN1 and LAN2 are used for cabling IDU1

(26)

Ethernet ports of the IDUs of the node

IDU1 VLAN

(27)

ALCplus2 27

Ethernet ports of the IDUs of the node

IDU1 priority

(28)

Ethernet ports of the IDUs of the node

IDU1 LAN3

loop

(29)

ALCplus2 29

Ethernet ports of the IDUs of the node

IDU1 LAN3

STP

(30)

(31)

ALCplus2 31

(32)

(33)

ALCplus2 33

(34)

Synchro status

Source with the higher priority is present, with good quality and selected

All the sync. sources are degraded (out > 9.9 ppm) or missing. The IDU

keeps the estimation of the last good source used

(35)

ALCplus2 35

ACM setting

Downshift (from 256QAM to 4QAM): the modulation complexity and the radio

capacity decrease.

Upshift (from 4QAM to 256QAM): the modulation complexity and the radio

capacity increase.

For each modulation profile the number of extra TDM (and then the Ethernet bitrate) can be set.

Radio capacity:

Ethernet

Permanent TDM (high priority E1) Extra TDM (low priority E1)

ACM enable: bandwidth and reference modulation (its mask can not be exceeded by any ACM profile)

ACM disable: bandwidth and used modulation

(36)

Permanent and

extra E1

Permanent: E1 present with all ACM profile

Extra In ALCplus2 the first 2 extra are A

(37)

ALCplus2 37

Extra TDM priority and order

A, B and after 1-16

As you need

1-16 and after A, B Keep attention to set the same config. in order to mantain the traffic

(38)

Adaptive Code Modulation 1 / 2

ACM profiles

In ALplus2/ALCplus2 radio family uses Adaptive Code and Modulation (ACM) in order to employ the correct modulation profile depending on the Rx signal quality.

Available ACM profiles are the following:

  4QAM strong   4QAM   8 PSK   16 QAM   32 QAM   64QAM   128QAM   256 QAM ACM switching

The usage of the previous modulation profiles in a fixed channel bandwidth results in a variable capacity. The criteria defining the necessity of an ACM switching, upshift or downshift, is the Rx S/N ratio.

  Upshift – When there is an increase of received S/N, within the same Channel Spacing, the modulation complexity is increased in the direction from 4QAM strong to 256QAM increasing the spectral efficiency

  Downshift – When there is a decrease of received S/N, within the same Channel Spacing, the modulation is reduced in the direction from 256QAM to 4QAM strong reducing the spectral efficiency,

These profiles operate in an RF channel with the following bandwidth:

 7 MHz

 14 MHz

 28 MHz

 56 MHz

(39)

ALCplus2 39

Adaptive Code Modulation 2 / 2

ACM setting

The ACM can vary modulation profiles between two extremes defined by the operator through software configuration: Upper Modulation and Lower Modulation.

  Upper Modulation – When propagation into the given radio channel is in the better condition (high Rx • S/N), the radio link is working at the maximum throughput defined at Upper Modulation: the highest • modulation profile that ACM can employ

  Lower modulation – When propagation into the given radio channel is in the worst condition (low Rx • S/N), the radio link is working at the minimum throughput, defined at Lower Modulation: the lowest • modulation profile that ACM can employ

Tx Power mode

Tx power mode can be set as Constant Peak or Constant Average (constant bolometer measurement).

  Constant Peak – Tx power is at maximum at 4QAM and at 256QAM is reduced (typical 4.5 dB) so the • RF Tx amplifier can operate in better linear conditions

  Constant Average – Tx power is the same at any modulation (…is the Upper Mod Tx power)

The Tx Power mode is set depending on the modulation license of the user

With Constant Average Tx power (Tx Power Constant Peak Mode = Disable), the Tx power at 4QAM and any other modulation is the same, so if Upper Modulation is 256QAM the output power at any modulation is the same of 256QAM which is 4.5 dB less than 4QAM.

(40)

Power profile

dBm 4 8 16 ₃₂ ₆₄ ₁₂₈ +23 +28 +23.5 +24 +25 AVERAGE PEAK AS13 13GHz

(41)

ALCplus2 41

Average

In Average the Max P_outis the Max P_out of the upper mod (23dBm @ 256 QAM) and is the same at any profile

(42)

Peak and 4QAM as ref. mod.

With Peak mode enabled and 4 QAM as

reference modulation, the max Pout is the max Pout of the radio at any modulation

(43)

ALCplus2 43

Peak request and 256QAM as ref. mod.

With Peak mode enabled and 256 QAM as reference modulation, the max Pout is the Pout that makes the transmitted spectrum not going out from the mask relevant to reference

modulation. If reference modulation is not

the one that allows the max Pout of the radio, the Tx power mode comes back to Average.

Every time the reference modulation is higher than the lower modulation…the power mode becomes Average

(44)

Max Capacity

(45)

ALCplus2 45

Radio Throughput (max E1 number)

Radio Throughput E1 4 8 17 34 5 10 20 40 7 14 30 60 10 20 40 80 12 25 50 80 15 30 60 80 17 35 70 80 20 40 80 80 0 10 20 30 40 50 60 70 80 90 7 MHz 14 MHz 28 MHz 56 MHz Channel Bandwith M a x E 1 4QAMst 4QAM 8PSK 16QAM 32QAM 64QAM 128QAM 256QAM

(46)

General Preset

Rx Power Low alarm threshold

Local Tx switch in case both

Remote Rx are alarmed: if remote Rx are alarmed for more than 10 sec in one minute, on local side Tx switch is performed and a Tx Fail alarm is active (to reset manually)

(47)

ALCplus2 47

Tributary traffic

• E1

- Permanent (high priority)

- Extra (low priority)

 In ALCplus2, trib A and B are here!

• STM-1

- STM-1 1+0

- STM-1 1+1

(48)

E1 Tributaries

Enable/Disable

RIGHT: E1 loop Radio side

Line

side Radio side

E1 name

alarms Remember that exist

• Permanent E1 (in all ACM profiles) • Extra E1

(49)

ALCplus2 49

STM-1

Frame

• Bit rate = 155,52 Mbit/s , Frame Period = 125s (rec. G.707)

• Byte matrix: 9 lines and 270 columns  row by row transmission (first byte is on the left of the top line )

• Every Byte is 64 Kbit/s channel

•STM-1 frame has a payload big enough for 1 E4 (140 Mbit/s) or 3 E3 (3 x 34 Mbit/s) or 63 E1 (63 x 2 Mbit/s)

(50)

SOH

64Kbit/s

RSOH

First 9 bytes of all the lines represent SOH (Section Overhead), made up by RSOH and MSOH separated by 9 bytes of AUOH (AU pointer)

(51)

ALCplus2 51

(52)

(53)

ALCplus2 53

Path overhead

The Virtual Container is made up by _{path overhead and relevant container:}

VC = POH + C

VC path overhead allows BER extimations, alarm and trouble

information, multiplation indication. Depending on C, 2 different POH exist:

VC-3 / VC-4 POH (with E3 and E4) VC-11 / VC-12 POH (with A1 and E1)

(54)

Compensation of variation of payload bit rate (with respect to nominal one) is obteined using stuffing.

In AUOH there are 6 bytes for justification signal and other 6 bytes (3 in SOH and other 3 adiacent in the same line of the payload) used for

stuffing in order to adjust the position of VC first byte: Adjustment, if necessary, concerns 3 bytes more or less (154 s delay or anticipation) and the update is every 4 frames.

AUOH Administrative unit overhead

H1 H1 H1 H2 H2 H2 H3 H3 H3 AUOH

(55)

ALCplus2 55

AU pointer

First 6 bytes of AUOH contain: the pointer to position of VC first byte, the AU and the New Data Flag (it informs there are new data).

This is why AUOH is called POINTER

Byte H1

Byte H2

bit

n° AU POINTER NDF

Administrative Unit = AUOH + VC AU4 = AUOH + VC4

(56)

Start = First Byte of VC4

RSOH

MSOH

AU4 POINTER

(57)

ALCplus2 57

TU, Tributary Unit, is made up by VC and overhead TUOH placed in a fixed position relevant to POH of higher order VC (where TU is placed)

In TUOH there are

- A pointer towards VC frame start - Stuffing bytes

TU12 = 4 columns of 9 bytes 2,304 Mbit/s capacity TUG is a group of same order TU:

- TUG21= 3 x TU12

- TUG3 = 7 x TUG21 (= 21 x TU12)

(58)

STM-1

&

C4

(59)

ALCplus2 59

High order POH (POH of VC4)

• J1 Path Trace: it is the label relevant to VC4

• B3 : BIP-8 parity result of the previous VC4, in MST mode points out C4 quality

• C2 : signalling label that points out if VC4 is equipped

• G1 : RDI, Remote Defect Indication, used to transmit to remote terminal an alarm condition

•F2/H4/F3/K3/N1 : not used

•C4: 140Mbit/s container with justification, stuffing and overhead bits

•VC4 : is made up by C4 and POH (path over head). POH is the first VC4 column (9 bytes)

•AU4 : is made up by VC4 and AU pointer. •STM-1 : is made up by AU4 and SOH

(60)

STM-1

&

E1

SOH AU pointer POH POH

(61)

ALCplus2 61 E1 AU4 VC4 TUG3 TUG21 TU12 VC12 C12 x 3 x 7 x 3

STM-1

(62)

STM-1 Tributaries

Line alarms Enable/Disable

STM-1 Loops

If J0 Received is different from Expected  TIM alarm

(63)

ALCplus2 63

(64)

VC4

VC4 alarms

J1 Path trace

If J1 Received is different from Expected  TIM alarm

(65)

ALCplus2 65

VC4 B3 quality thresholds

Degraded

Excessive

VC4 label: tugStructure

(66)

VC-12

Tug-3 = 1 Tug-2 = 7 VC-12 = 3

(67)

ALCplus2 67

Ethernet traffic

• Packet frame

• Level 2 and Level 3

• VLAN

• Priority (Qos and PoS)

• LLF

(68)

802.3 PACKET FORMAT

Pre.

Octet (byte)

SFD DSAP SSAP len _(LLC-PDU)Dati pad FCS

7 1 6 6 2 _{a 1500}da 0 da 0 _{a 46} 4

From 64 to 1518 Byte without tag

Start Frame Delimiter

Destination Service Access Point: MAC address of destination

Source Service Access Point: MAC address of source

Frame Check Sequence Lenght

(69)

ALCplus2 69

• MAC switching:

- destination local = discarded

- destination known = sent to the port

- destination unknown = sent to all the ports

• MAC Address learning • MAC Address ageing • Auto negotiation :

- port speed - duplex-mode

• MDI/MDIX crossover

• Layer 2 Flow Control / Back Pressure

(70)

Ethernet switch

QinQ

91 00: field to add (the same on local and on remote switch) in case of double tag. This field is add after the Destination Address in the overhead before the transmission and is deleted by the switch on

Packet output queue depending on packet 802.1p priority

Life of addresses in the MAC address table Max packet size

Queue emptying policy

- 8421 WRR: 8 packets with queue 3, then 4 with queue 2, then 2 with queue 1 and then 1 with queue 0.

- Strict priority: a packet can go out only if the upper priority queue is empty

- Strict 3: all queue 3 packets can go out, after them all the other using 8421WRR policy

- Strict 3 and 2: all queue 3 and 2 packets can go out strictly, after them all the other using

(71)

ALCplus2 71

CONNECTION EXAMPLES

NO VLAN AL_ETH _{AL_ETH} NO VLAN PC1 NO VLAN AL_ETH _{AL_ETH} NO VLAN PC2 PC2 PC1 PC3 PC4 NO VLAN NO VLAN 1 2 1 2 VLAN 4001 VLAN 4002 AL_ETH AL_ETH PC4 VLAN 4003 _{VLAN 4003} AL_ETH AL_ETH PC2 PC1 VLAN 4005 VLAN 4005 PC1 NO VLAN PC3 NO VLAN 1 2 VLAN 4004 VLAN 4004 PC2 NO VLAN VLAN 4005

An all pass Hub/Switch. Example1

PC1 with PC2 and PC3 with PC4. Example2

PC1 with PC2 and PC3 with PC4 with one external switch. Example3

PC1 with PC2 with 2 external switches. Example4 PC3 PC5 PC6 PC4 Local Remote

(72)

(73)

ALCplus2 73

IEEE 802.1Q VLANs

VLANs in two different ways:

- Based on Port, VLAN related to a local port attribute

- Based on IEEE 802.1Q TAG , VLAN is defined by the VID (VLan Identifier) TAG content.

Switching between ports is based on VLAN membership defined into Vlan configuration table.

Lan1 and Port1 are members of Vlan 303

(74)

IEEE 802.1Q VLANs

• Break a LAN into a few smaller LANs and prevent data to flow between the sub-LANs

• Micro segment the LAN with scalability • Distribute traffic load

• Better control of broadcast messages

• VLAN: a field starting with other 4 Bytes starting with the 2 Bytes 8100 – the packet size from 1518 Bytes arrives to 1522!

(75)

ALCplus2 75

VLAN

Disable 802.1q: no Tag filter, “Port Based VLAN” will be followed

Fallback: if input is tagged, Virtual LAN table will be followed; if input tag is not present in the map or input is untagged, Port Based VLAN will be followed

Secure: if input is tagged, Virtual LAN table will be followed; if input tag is not present in the map or input is untagged, packets will be dropped

VLAN can be used to route packets through local and remote switch.

If VLAN are not used, “Port Based VLAN” assignment is used port by port

( Port Based VLAN is the old LAN per port )

(76)

VLAN 720 doesn’t transit through port 1

VLAN 720 exits

through port 1 untagged VLAN 720 exits through port 1 with tag 720

VLAN 720 exits through port 1, with the same tag it has at input (unmodified)

(77)

ALCplus2 77

LAN settings: Interface

Cable Port status LAN Speed Flow control LLF status LAN status

(78)

Settings for allpass Hub all ports to all ports,

Example 1

(79)

ALCplus2 79

Settings for Lan to Lan separated traffic, Example 2

(80)

Lan to Lan separated traffic

Example 2 settings

(81)

ALCplus2 81

Priority

802.1p

IpTOS

Priority queues are set for all the ports

Priority management can be defined port by port: in this example, despite general rules, LAN1 does not consider priority!

3 bits8 levels

(82)

Quality of Service

 Better service to selected network traffic

 Different service classes based on the identity of the customer or the type of application

 Different service levels or to ensure service quality for time-critical traffic such as voice or video.

 IEEE 802.1p QoS (Layer 2- Quality of Service): 3 bit of the TAG.

 IP-V4 ToS (Layer 3- Type of Service): 6 bit of the TOS (D.S.C.P.)

(83)

ALCplus2 83

Example of DSCP assignement in a

UMTS station

NODE B RAB/RB DSCP value

Queue Service class 802.1p

TBD 7 TBD 6 Synch 46 3 CBR 5 CS conversational 38 3 CBR 5 SRB 36 3 CBR 5 Common channels 34 3 CBR 5

NBAP Signalling 30 2 VBR real time 4 CS streaming 28 2 VBR real time 4 PS streaming 26 2 VBR real time 4 HS streaming 24 2 VBR real time 4 PS interactive 22 1 VBR not real time 3 PS background 20 1 VBR not real time 3

O&M 12 0 UBR 0

HSPA interactive (1,2) 12 0 UBR 0 HSPA interactive (3) 12 0 UBR 0

(84)

LLF

Seconds before the LLF alarm

Port by port, ports to check relevant LLF can be set

(85)

ALCplus2 85

LAN PORT

Ethernet synch.

LAN cable

From 64Kb to Full Rate Auto Negotiation

In point to point connection

(86)

Spanning tree

The Spanning Tree Protocol (STP) is a link layer protocol that ensures a loop-free topology for any bridged LAN.

MAC address & priority Standard STP or

rapid RSTP STP params

edge/no edge Each port must be assigned to _{Bridge1 or Bridge2, every}

equipment crossed by a packet increases of 1 sec the max age

(87)

ALCplus2 87

STP parameters

• Hello time: from 2 to 10 sec, is the period between two BPDU packets

• Forward Delay: the time for a status change (blocking learning,

learningforwarding, forwardingblocking). In this way the time requested from blocking to forwarding is twice the Forward Delay (2 status changes)

• Max Age: If the incoming packet has a max age bigger than the one here defined, the packet is dropped

(88)

RSTP parameters

• Hello time: from 1 to 10 sec, is the period between two BPDU packets

• Forward Delay: the time for a status change (blocking learning,

learningforwarding, forwardingblocking). In RSTP the time

requested from blocking to forwarding between two RSTP ports is the hallo time (RAPID!) instead if the other port is not RSTP, again the time is twice the Forward Delay (2 status changes)

(89)

ALCplus2 89

Bridge

00 00 00 1C 00 01

Equipment MAC address, set by SIAE, the same for management and traffic

Bridge priority: in case of same value, the smaller MAC addr. elects the router bridge

High _Low

Bridge1 and 2 have same MAC addr. but can have different priority

(90)

Crossconnection matrix

• Tributary – Radio crossconnetions

• Tributary – Tributary crossconnections

• Radio – Radio crossconnections

Remember that exist

• Permanent E1 (in all ACM profiles) • Extra E1 (…there are A and B)

(91)

ALCplus2 91

CrossConnect Matrix

Radio-Tributary

Tributary

(Front panel connectors)

Radio capacity

Extra (Low priority) Permanent (High priority)

CrossConnection is performed with a Drag ’n’ Drop of the E1 slot

(92)

Radio-Radio

crossconnection

(93)

ALCplus2 93

(94)

CrossConnection List

Selection column

(95)

ALCplus2 95

(96)

Link configuration

• 1+0

• 1+1 hot stand by

• 1+1 freq. diversity

• 2+0 (ALplus2 only)

(97)

ALCplus2 97

1+1 hot stand-by

= F= FHIGH_LOW

= Stand-by = Active

Both radios, working at the same frequency, are active in Rx but only one is active in Tx:

1 antenna – Branching losses are inserted in link budget

2 antennas –Link is in space diversity (and without branching losses) Best performance for d=150l (d=distance between antennas)

ODU ODU ODU _ODU IDU IDU 1 1 2 ₂

(98)

1+1 frequency diversity

ODU ODU ODU _ODU IDU IDU 1 1 2 ₂

All radios, working at different frequencies, are active in Rx and Tx 1 antenna – Branching losses are inserted in link budget

2 antennas –Link is in space diversity (and without branching losses)

(99)

ALCplus2 99

SD management

1. Delete SD files 2. Create Boot SD 3. Create Sw DWL SD

4. Enable automatic restore (all)

5. Enable automatic restore (Data only) 6. Disable automatic restore

7. Enable “Not running” Sw delete 8. Disable “Not running” Sw delete 9. Force automatic restore

10. Copy Sw from SD

11. Copy Data to BOOT SD 12. Copy Sw to BOOT SD _________________________

Notes:

Sw= Equipment firmwares Data=Configuration Backup file

(100)

ALCplus2 100

Configure a new IDU with the SD

After the substitution of an IDU, the SD memory of the old IDU can download

configuration (“data”) and firmware (“SW”) on the new one automatically as soon as its controller points out a mismatch between the serial number (of the old IDU) stored in the SD and the serial number of the new IDU. After there will be a restart.

To prepare the SD memory to be a “back-up”, in the WEBLCT:

1. Insert an empty SD in the IDU and after run WEBLCT 2. Create a Boot SD …it takes about 10 minutes

3. Enable Automatic Restore (All)

Evenctual new setting after this point are included in the back-up The status of the SD will show:

Automatic data restore from SD..……..Enabled Automatic SW download from SD……Enabled

(101)

ALCplus2 101

Force automatic restore

Force the download from SD to IDU (Only for BootSD). This command applies the backup manually.

(102)

Firmware 1.2.2 and WebLCT 1.2.2

• ACL

• Configuration mismatch alarm

• Line trunk (ethernet traffic)

• Radio trunk (ethernet traffic)

• ELP

• Ethernet OAM-FM

• Ethernet Switch reset

• Factory default

(103)

ACL – Access Control List

A “white list” of IP addresses that can access the LOCAL IDU

In order to avoid to be cut out from the IDU: 1) Configure the list

2) Enable the list

ALCplus2 103

An empty list, enabled, means: no one can enter!

In any case the access to IDU through LCT port (the USB one) is allowed.

(104)

Synchronization: Mismatch and Rescue

Config. Mismatch and

(105)

Configuration Mismatch alarm

Every time one of the equip of the hop has a mismatch due to a new

setting…the configuration is not applied until the remote is not configured in the same way.

Parameters checked through this function are:

1. Traffic division (TDM against Ethernet) 2. Extra TDM setting

3. ACM on/off

4. Reference modulation with ACM off 5. Extra TDM priority order

ALCplus2 105

Parameters not checked:

Reference modulation with ACM on Channel spacing

RF frequency

Peak/Average Tx power Link ID

(106)

Rescue status

During the line-up, if the remote, already configured, is not visible both terminals enter in Rescue status: 4QAM and 0 TDM with

Rescue alarm ON.

After 5 minutes if the remote remains unreachable, they turn back to use the traffic configuration of the line up.

(107)

Line trunk (802.3 ad-LAG)

Up to 4 Ethernet lines can be grouped to increase capacity (4 different groups are available) in the same IDU

Conditions:

1. Same speed 2. Full duplex

Division of Ethernet traffic: XOR between destination MAC and source MAC (hashing)

ALCplus2 107

LAN1 LAN2 LAN3 LAN4

(108)

Radio trunk (for Ethernet traffic only)

Up to 4 different streams can be grouped to increase capacity (1

group only is available). The IDUs must be in the same node.

Throughput:

• Unicast  < 1Gbit/s bidirectional

• Broadcast  < 0.5Gbit/s bidirectional

Division of Ethernet traffic:

(109)

ELP

A level 2 protection of ethernet lines (2 or more lines in different groups) in the same IDU or in the same node:

the switch is performed when a LAN port LOS (on local side) is noticed. When this LOS is over a second switch is not performed.

ELP equipment  Prot 1 and 2

ELP nodal  Nodal Prot 1, 2, 3 and 4

(110)

(111)

• FM Fault Management inside user VLAN

– Continuity Check Protocol heartbeat with period 1s, 10s, 1m, 10m; no auto reply – Loopback Protocol LBM destination mep/mip replies, up to 5 consecutive

– Link Trace Protocol LTM in a MA, reached devices answer with its own MAC address – Remote Defect Indicator a mep informs the other meps of the MA regarding a defect

• MD Maintenance Domain levels from 7 (higher) to 0 (lower)

– Customer Domain both ends of Ethernet service: between end users levels 7, 6, 5 – Service Provider Domain whole network except end users levels 4, 3

– Operator Domain a part of network levels 2, 1 and 0

• DL Domain Label, different for every domain

• MA Maintenance Association, MA correlates VLAN to MD (and its meps/mips)

• MEP Maintenance End Point

– MEP down outside line side

– MEP up inside (radio port and other local ports depending on the VLAN table)

• MIP Maintenance Intermediate Point

ALCplus2 111

OAM acronims

ALC+2  1 DM

1 MEP/MIP each VLAN , max 32 VLAN (Vid 1 and Vid 4095 are not available)

(112)

MEP and MIP

1. Create VLAN (VLAN 1 and VLAN 4095 are available for traffic but not for OAM) 2. Set as filter on the VLAN ports Fallback or Secure

3. Create Domain (command OAM-FM Domain in WebLCT)

(113)

Bind MA

In OAM-FM MA/MEP select the VLAN where to create the MIP and select the command Bind MA. The name of the VLAN is suggested MA name.

A MIP is created inside the Ethernet switch.

ALCplus2 113

VLAN 2 is selected

Now VLAN 2 has a MA and a MIP inside the ALC+2

(114)

Bind MEP

VLAN 11 is selected

•MEP ID is univocal in the VLAN •MA Name is the VLAN label

•CCM Interval is the CCM period :1s, 10s, 1m, 10m and LAN4 is the port where CCM messages exit through

Select port and direction

Outside the switch Inside the switch Now VLAN 11 has a MEP inside the ALC+2, the

CCM start from this MEP and go out through LAN4 every 10 seconds

(115)

MEP usage

ALCplus2 115

CCM enabled.

The MEP sents CCMs, every T, to its RMEPs to evalutate the status of the VLAN circuit. The CCM can be originated only by a MEP.

T = 1s, 10s, 1m, 10m MEP identity

RED: no CCM received from remote MEPs for more than 2.5T , or RMEP not

present/crosschecked.

Green: received from crosschecked RMEP RMEP: table of Remote MEPs (RMEP) of this local MEP.

A RMEP must be crosschecked to be used.

Local MEP and its RMEP are in the same VLAN and must have the same CCM period T.

A RMEP sends CCMs towards the local MEP and without LBM or LTM does not replies to local MEP.

MAC of

remote equip. MEP status:

Start - RMEP must be crosschecked Connected – RMEP is working Failed – RMEP is not receiving

(116)

Test using MEP: LBM and LTM

Set the MIP select the RMEP

Number of messages Replies

LBM – A unicast message towards a same domain MEP/MIP . In case of MIP destination the MAC of the equipment should be written (not in ALC+2)

(117)

LTM

LTM – All the MEP/MIP met reply towards the sender… that obtains a list of MIP/MEP crossed towards the RMEP

destination.

ALCplus2 117

List

Destination Sender

(118)

Ethernet switch reset

All the ethernet setting are

deleted (ethernet traffic is

cut). The system restarts.

(119)

Factory default

ALCplus2 119

User: System Pswd: “****”

If “Apply” is selected all the settings are deleted substituted by factory default (addresses depends on ODU H or L)

(120)

ODU

(121)

ALCplus2 121

1+0 Integrated Antenna

(122)

(123)

ALCplus2 123

1+0 Not Integrated Antenna

(124)

(125)

ALCplus2 125

(126)

(127)

ALCplus2 127

(128)

FAST-LOCK POLE MOUNTING KIT

IDU-ODU cable