ALC+2 Training Slide
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Description
ALCplus2 ACM radio link
ALCplus2
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Training items 1. 2. 3. 4.
ALCplus2 SCT or WEBLCT console WEB LCT commands Link configuration
ALCplus2
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IDU
ALCplus2 (single board)
ALCplus2
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ALCplus2 HW configurations
ALplus2/ALCplus2
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ODU AS 03 edition ASN
ODU 1+1 ODU
Unprotected ODU AL plus and ALC plus
ALplus2/ALCplus2 Copyright Siae Microelettronica S.p.a.
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8
ALCplus2 Connectors Alarm LEDs: URG, NURG, SW, TEST, power ON
STM1 (1+0/1+1)
16 E1 75/120
-48Vdc (in parallel)
Nodal bus
LAN 2, 4
1-8
9 - 16
LAN 1, 3 RJ45 management
Power supply Fuse LAN 3, 4 (optical)
USB
ODU cable
2 E1 75/120 Trib A and B ALCplus2
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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.
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SCT
ALCplus2
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WEBLCT console
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Management ports
1/2
Traffic ethernet ports can be used for management (in a separated VLAN)
PC address assigned by IDU ALCplus2
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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 ALCplus2
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WEB LCT WEB LCT main menu is similar to SCT Equipment menu.
SCT: Equipment menu
This software manages a single terminal. ALCplus2
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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.
Remote element list Local
172.18.81.20 WEBLCT
172.18.81.22 WEBLCT
Local
ALCplus2 172.18.81.20
172.18.81.22
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name and hardware activity
ALCplus2 status display Tx active branch
local alarms IDU C° configuration
connection
TDM ethernet capacity capacity
RF channel and frequencies
Rx active branch Tx and Rx ACM profiles ALCplus2
Tx and Rx power
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WEB LCT: equipment configuration Configuration
Commands to configure a single equipment
ACM setting
Alarms thresholds, Tx and Rx switches Tributaries RF channel
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ALCplus2 IDU Configurator
1..8
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ALCplus2 Node connections From LAN 1 of IDU8
From NB1 of IDU8
IDU 1
LAN 1 LAN2
NB1 NB2
IDU 2
LAN 1 LAN2
NB1 NB2
Node Traffic transport:
Max 8
IDU 3
LAN 1 LAN2
NB1 NB2
TDM (E1) Nbus cable LAN
......... IDU 8
LAN 1 LAN2
To LAN 2 of IDU1
NB1 NB2
LAN cable LAN1 and LAN2 are used for cabling
To NB2 of IDU1
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ALCplus2 node manager (SCT only) Example: 4 idu node Commands
IDUs
IDUs connected through LAN
IDUs connected through NBus
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Nodal matrix It’s a logical matrix relevant a logical IDU made up by the physical IDUs The cross connections between IDUx and the Nbus and Nbus and IDUx+1 are automatically performed
ALCplus2
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Nodal matrix
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Nodal Ethernet switch configurator
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Nodal Port based VLAN LAN1 and LAN2 are used for cabling
Connections are bidirectional automatically
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Node VLAN table
LAN1 and LAN2 are used for cabling
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VLAN table
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Ethernet ports of the IDUs of the node IDU1 Interface
LAN1 and LAN2 are used for cabling
ALCplus2
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Ethernet ports of the IDUs of the node IDU1 VLAN
LAN1 and LAN2 are used for cabling
ALCplus2
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Ethernet ports of the IDUs of the node IDU1 priority
LAN1 and LAN2 are used for cabling
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Ethernet ports of the IDUs of the node IDU1 LAN3 loop
LAN1 and LAN2 are used for cabling
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Ethernet ports of the IDUs of the node IDU1 LAN3 STP
LAN1 and LAN2 are used for cabling
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STP mode of each IDU
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STM1 synchronisation - ALCplus2
ALCplus2
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T2 / T3 1
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T2 / T3 2
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Synchro status
Clock internally generated
All the sync. sources are degraded (out > 9.9 ppm) or missing. The IDU keeps the estimation of the last good source used Source with the higher priority is present, with good quality and selected ALCplus2
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ACM setting 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
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. ALCplus2 35
Permanent and extra E1 Permanent: E1 present with all ACM profile Extra
Capacity for E1 streams
ALCplus2
In ALCplus2 the first 2 extra are A and B
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Extra TDM priority and order As you need A, B and after 1-16
1-16 and after A, B
Keep attention to set the same config. in order to mantain the traffic ALCplus2
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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 These profiles operate in an RF channel with the following 4QAM bandwidth: 8 PSK 7 MHz 16 QAM 14 MHz 32 QAM ODU pass band filters 64QAM 28 MHz 128QAM 56 MHz 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,
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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. The result is that enabling 256QAM gives a big advantage for traffic but less link budget margin at 4QAM.
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Power profile
AS13 13GHz
dBm
+28 +25 +24 +23.5
PEAK
+23
AVERAGE
4QAM 8PSK
16QAM 32QAM 64QAM 128QAM 256QAM ALCplus2
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Average In Average the Max Pout is the Max Pout of the upper mod (23dBm @ 256 QAM) and is the same at any profile
ALCplus2
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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
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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
ALCplus2
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Max Capacity RF Bandwidth
7MHz
14MHz
28MHz
ALCplus2
56MHz
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Radio Throughput (max E1 number)
Radio Throughput E1 90 80
80 80 80 80 80
80 70 70 60
60
4QAMst
60
4QAM
Max E1
50
8PSK
50
16QAM 40
40
40
35
64QAM
30
128QAM
25
20 10 10
32QAM
34
30 30
40
4 5
12
7
15
17
20
20
256QAM 17
20
14 8
10
0 7 MHz
14 MHz
ALCplus2 Channel Bandwith
28 MHz
56 MHz
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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)
Link name ALCplus2
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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 ALCplus2
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E1 Tributaries
Remember that exist • Permanent E1 (in all ACM profiles) • Extra E1
RIGHT: E1 loop Radio side
Enable/Disable Line side
Radio side
E1 name
alarms
LEFT: E1 loop Line side
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• Bit rate = 155,52 Mbit/s , Frame Period = 125s (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)
STM-1 Frame ALCplus2
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SOH 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) 64Kbit/s
ALCplus2
MSOH
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RSOH Regenerator Section Overhead
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MSOH Multiplex Section Overhead
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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-11 / VC-12 POH (with A1 and E1)
VC-3 / VC-4 POH (with E3 and E4) ALCplus2
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AUOH Administrative unit overhead 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.
RSOH AUOH
Payload
H1 H1 H1 H2 H2 H2 H3 H3 H3 MSOH ALCplus2
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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 bit
NDF
n° AU
Byte H1
POINTER
Byte H2
Administrative Unit = AUOH + VC AU4 = AUOHALCplus2 + VC4
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Start = First Byte of VC4
RSOH AU4 POINTER
9 lines
MSOH
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TU and TUG 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) ALCplus2
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Stuffing and justification
ALCplus2
STM-1 & C4
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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. ALCplus2 •STM-1 : is made up by AU4 and SOH
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SOH
STM-1 & E1
AU pointer
POH
POH
Justification ALCplus2
E1
60
E1
C12
VC12
TU12 x3
TUG21
STM-1
x7
TUG3 x3
AU4
VC4
…in a STM-1 can be inserted 63 E1 ALCplus2
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STM-1 Tributaries Enable/Disable
Line alarms
STM-1 Loops If J0 Received is different from Expected TIM alarm
J0 Path trace ALCplus2
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STM-1 B2 quality thresholds
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VC4
VC4 alarms
J1 Path trace
If J1 Received is different from Expected TIM alarm
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VC4 B3 quality thresholds
Excessive Degraded
VC4 label: tugStructure *Tug = Trib. unit group
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VC-12 Tug-3 = 1 Tug-2 = 7
VC-12 1-7-3
VC-12 = 3
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Ethernet traffic • • • • •
Packet frame Level 2 and Level 3 VLAN Priority (Qos and PoS) LLF
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802.3 PACKET FORMAT Destination Service Access Point: MAC address of destination
Source Service Access Point: MAC address of source Octet (byte) 7
Pre.
1
SFD
6
6
2
da 0 a 1500
da 0 a 46
4
DSAP
SSAP
len
Dati (LLC-PDU)
pad
FCS
Lenght From 64 to 1518 Byte without tag Frame Check Sequence Start Frame Delimiter
Preamble: it permits receiver synchronisation ALCplus2
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Switch at Layer 2 • 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
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Ethernet switch
Life of addresses in the MAC address table Packet output queue depending on packet 802.1p priority
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
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 the other side as soon as it has been received. The Double tag is the one set as default tag of each external port ALCplus2
- 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 8421WRR policy WRR= Wait Round Robin mode
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CONNECTION EXAMPLES
Local
Remote NO VLAN
NO VLAN
PC1
AL_ETH
PC3
AL_ETH
PC4
An all pass Hub/Switch. Example1
PC6
PC5
PC1 PC3
1
NO 1 VLAN 2 NO VLAN
VLAN 4001
AL_ETH
PC3
2
NO VLAN
PC2 PC4
NO VLAN
NO 1 VLAN NO VLAN
NO VLAN
AL_ETH VLAN 4002
PC1 with PC2 and PC3 with PC4. Example2
PC1
PC2
VLAN 4003
2
AL_ETH
VLAN 4004
AL_ETH
VLAN 4003 VLAN 4004
PC1 with PC2 and PC3 with PC4 with one external switch.
PC2 PC4
Example3 VLAN 4005
VLAN 4005 VLAN 4005
AL_ETH PC1
AL_ETH
PC1 with PC2 with 2ALCplus2 external switches. Example4
PC2
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TAG composition
1 VLAN TAG
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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
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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! • VLAN with double TAG: a new field with other 4 Bytes starting with the 2 Bytes 9100 (see Ethernet Switch) – Remember to increase packet size! ALCplus2
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VLAN 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 )
Disable 802.1q: no Tag filter, “Port Based VLAN”
4001
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 ALCplus2
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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)
Port 1
Port 2
Port 3
RadioPort ALCplus2
VLAN map 76
LAN settings: Interface LAN Speed
Flow control LAN status Port status
Cable LLF status
Port always active ALCplus2
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Settings for allpass Hub all ports to all ports, Example 1
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Settings for Lan to Lan separated traffic, Example 2 LAN per port
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Lan to Lan separated traffic Example 2 settings
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Priority
802.1p Priority management can be defined port by port:
3 bits8 levels
in this example, despite general rules, LAN1 does not consider priority!
Priority queues are set for all the ports
IpTOS 6 bits64 levels ALCplus2
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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 timecritical 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.) QoS at level 2, at level 3 or at both ALCplus2
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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
UBR
0
0 ALCplus2
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LLF
Seconds before the LLF alarm
Port by port, ports to check relevant LLF can be set
ALCplus2
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LAN PORT Ethernet synch.
In point to point connection
LAN cable Auto Negotiation
From 64Kb to Full Rate
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Spanning tree 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 of the packet
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
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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, learningforwarding, forwardingblocking). 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
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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, learningforwarding, forwardingblocking). 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) • Max Age: If the incoming packet has a max age bigger than the one here defined, the packet is dropped ALCplus2
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Bridge
Bridge1 and 2 have same MAC addr. but can have different priority
00 00 00 1C 00 01
Equipment MAC address, set by SIAE, the same for management and traffic
High
Low
Bridge priority: in case of same value, the smaller MAC addr. elects the router bridge
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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)
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Permanent (High priority)
Radio capacity
CrossConnect Matrix Tributary (Front panel connectors)
Radio-Tributary CrossConnection is performed with a Drag ’n’ Drop of the E1 slot
Extra (Low priority)
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Radio-Radio crossconnection (passthrough)
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Trib.-Trib. crossconnection
ALCplus2
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CrossConnection List Selection column
Delect the selected crossconnection ALCplus2
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ATPC
ALCplus2
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Link configuration • • • •
1+0 1+1 hot stand by 1+1 freq. diversity 2+0 (ALplus2 only)
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1+1 hot stand-by ODU
= FHIGH = FLOW
= Stand-by = Active ODU
1
1
IDU
IDU
2
2
ODU
ODU
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) ALCplus2
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1+1 frequency diversity ODU
ODU
1
1
IDU
IDU
2
2
ODU
ODU 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) = F1HIGH = F1LOW
= F2HIGH = F2LOW ALCplus2
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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
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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 ALCplus2
100
Force automatic restore Force the download from SD to IDU (Only for BootSD). This command applies the backup manually.
ALCplus2
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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 ALCplus2
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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 An empty list, enabled, means: no one can enter! In any case the access to IDU through LCT port (the USB one) is allowed.
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Synchronization: Mismatch and Rescue
Config. Mismatch and “5 minutes Rescue” are enabled ALCplus2
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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 Parameters not checked: Reference modulation with ACM on 5. Extra TDM priority order Channel spacing RF frequency Peak/Average Tx power Link ID ALCplus2
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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.
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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
Trunk x
Division of Ethernet traffic: XOR between destination MAC and source MAC (hashing)
LAN1
ALCplus2
LAN2
LAN3
LAN4
107
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: XOR between destination MAC and source MAC (hashing) ALCplus2
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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
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OAM - FM
…remember to set Fallback or Secure on used port ALCplus2
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OAM acronims •
FM – – – –
•
Fault Management inside user VLAN Continuity Check Protocol Loopback Protocol LBM Link Trace Protocol LTM Remote Defect Indicator
Maintenance Domain levels from 7 (higher) to 0 (lower)
MD – – –
heartbeat with period 1s, 10s, 1m, 10m; no auto reply destination mep/mip replies, up to 5 consecutive in a MA, reached devices answer with its own MAC address a mep informs the other meps of the MA regarding a defect
Customer Domain Service Provider Domain Operator Domain
both ends of Ethernet service: between end users levels 7, 6, 5 whole network except end users levels 4, 3 a part of network levels 2, 1 and 0
ALC+2 1 DM
•
DL
Domain Label, different for every domain
•
MA
Maintenance Association, MA correlates VLAN to MD (and its meps/mips) 1 MA each VLAN (except Vid 1 and Vid 4095)
•
MEP
Maintenance End Point
– –
•
MIP
MEP down MEP up
outside line side inside (radio port and other local ports depending on the VLAN table)
Maintenance Intermediate Point
ALCplus2
1 MEP/MIP each VLAN , max 32 VLAN (Vid 1 and Vid 4095 are not available) 111
MEP and MIP 1. 2. 3. 4.
Create VLAN (VLAN 1 and VLAN 4095 are available for traffic but not for OAM) Set as filter on the VLAN ports Fallback or Secure Create Domain (command OAM-FM Domain in WebLCT) Bind MA (…MIP) or Bind MEP (command OAM-FM MA/MEP in WebLCT)
ALCplus2
112
VLAN 2 is selected
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.
Now VLAN 2 has a MA and a MIP inside the ALC+2 ALCplus2
113
VLAN 11 is selected
Bind MEP
Select port and direction
•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 Now VLAN 11 has a MEP inside the ALC+2, the CCM start from this MEP and go out through LAN4 every 10 seconds
Outside the switch Inside the switch Used port must be NOT “trunked” ALCplus2
114
MEP usage RED: no CCM received from remote MEPs for more than 2.5T , or RMEP not present/crosschecked. Green: received from crosschecked RMEP MEP identity
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
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.
MEP status: Start - RMEP must be crosschecked Connected – RMEP is working Failed – RMEP is not receiving MAC of remote equip.
ALCplus2
115
Test using MEP: LBM and LTM 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) Number of messages Replies
select the RMEP
Set the MIP
ALCplus2
116
LTM LTM – All the MEP/MIP met reply towards the sender… that obtains a list of MIP/MEP crossed towards the RMEP destination. Sender
Destination
List ALCplus2
117
Ethernet switch reset All the ethernet setting are deleted (ethernet traffic is cut). The system restarts.
ALCplus2
118
Factory default User: System Pswd: “****” If “Apply” is selected all the settings are deleted substituted by factory default (addresses depends on ODU H or L)
ALCplus2
119
ODU POLE MOUNTING
ALCplus2
120
1+0 Integrated Antenna STANDARD POLE MOUNTING KIT
ALCplus2
121
1+1 Integrated Antenna STANDARD POLE MOUNTING KIT
ALCplus2
122
1+0 Not Integrated Antenna STANDARD POLE MOUNTING KIT
ALCplus2
123
1+1 Not Integrated Antenna STANDARD POLE MOUNTING KIT
ALCplus2
124
1+0 Integrated Antenna FAST-LOCK POLE MOUNTING KIT
ALCplus2
125
1+1 Integrated Antenna FAST-LOCK POLE MOUNTING KIT
ALCplus2
126
1+0 Not Integrated Antenna FAST-LOCK POLE MOUNTING KIT
ALCplus2
127
1+1 Not Integrated Antenna FAST-LOCK POLE MOUNTING KIT
IDU-ODU cable
Gain in Vdc (dBm in Rx)
ALCplus2
128 Ground
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