Hello everyone!
Today, I will share with you basic information about control boards MPLA(E)/MPLB.
Control boards are the most important part of the OLT. They enable uplink connections and configuration and management. They contain the complete OLT configuration. They have 4 GE/10GE ports for uplink connections and CON, ETH, ESC and USB ports for monitoring and maintenance. Detailed information about these interfaces we can see on the next table and picture:
|
Interface |
Function |
|
CON (RS-232 Serial port) |
There is one interface and we use this port for local and remote maintenance |
|
ETH (10/100M Base-T) |
There is one interface and we use this port for local and remote maintenance |
|
ESC (RS-485) |
There is one interface and we can use it for provide environment monitoring channels |
|
GE/10GE |
The main ports, can be electrical or optical ports. These ports we use for users access and as an upstream interface. There are 4 slots for SFP. |
|
USB |
This port is USB 2.0 and we can use it as storage interface |
During normal operation, one control board is active while the other is the standby. In case of problems with the main board, the standby board takes over the role of the main one. Because that, when we configure OLT, we must save configuration and data.
We can monitor the operation of the control board on the indicators, as we can see in the next table:
|
RUN ALM: running status LED |
|
|
GREEN: on for 1s and off for 1s repeatedly |
The board is running properly |
|
RED: on for 0.25s and off for 0.25s repeatedly |
The board is starting up. |
|
ORANGE: blinking |
High temperature alarm |
|
RED: on |
The board is faulty. |
|
ACT: active/standby indicator |
|
|
GREEN: on/off |
The board is in the active/standby state. |
|
LINK: link/data status indicator |
|
|
GREEN: on |
Port connection establishment |
|
GREEN: blinking |
Data is being transmitted |
|
YELLOW: off |
The port is not connected |
|
USB: USB port status indicator |
|
|
STEADY: green |
The USB device can be identified. |
|
GREEN: blinking |
USB device data exchange. |
OLT MA/EA5800-X17/X15/X7 use control boards MPLB and MPLA(E) and MA/EA5800-X2 uses only control board MPSA. There are three hardware versions of MPLA – H901MPLA, H902MPLA and H903MPLA, and two hardware versions of MPLB: H901MPLB and H902MPLB.
H901MPLA has the maximum the bandwidth of each slot 50Gbps, and H901MPLB has the maximum bandwidth of each slot 100 Gbps. On the next table, we can see detail specification for these control boards:
|
H901MPLA/H901MPLB Specification |
|
|
Product Description |
Main Processing Board MPLA/MPLB |
|
Product Series |
MA5800 |
|
Dimensions (H x W x D) |
442 mm x 268.7 mm x 263.9 mm |
|
Maximum Number of Ports in a Subrack |
112 x GPON/EPON 336 x GE/FE 56 x 10G GPON/10G EPON 56 x 10G GE 224 x E1 |
|
Switching Capacity of the System |
7 Tbit/s |
|
Maximum Number of MAC Addresses |
262144 |
|
Access ONU |
17408 |
|
Multicast user |
17408 |
|
Configurable multicast channel |
4096 |
|
Concurrent multicast channel |
4000 |
|
IPv4 routing table |
65536 |
|
IPv6 routing table |
16384 |
|
Service port |
262144 |
|
ARP table |
65536 |
|
Ambient Temperature |
-40°C to 65°C Note: The MA5800 can start up at a lowest the temperature of -25°C and run at -40°C. The 65°C temperature refers to the highest temperature measured at the air intake vent |
|
Working Voltage Range |
-38.4V DC to -72V DC |
|
Power consumption |
Static: 60W Maximum: 117W |
|
Layer 2 Features |
VLAN + MAC forwarding, SVLAN + CVLAN forwarding, PPPoE+, and DHCP option82 |
|
Layer 3 Features |
Static route, RIP/RIPng, OSPF/OSPFv3, IS-IS, BGP/BGP4+, ARP, DHCP relay, and VRF |
|
MPLS & PWE3 |
MPLS LDP, MPLS RSVP-TE, MPLS OAM, MPLS BGP IP VPN, tunnel protection switching, TDM/ETH PWE3, and PW protection switching |
|
IPv6 |
IPv6 IPv4/IPv6 dual stack, IPv6 L2 and L3 forwarding, and DHCPv6 relay |
|
Multicast |
IGMP v2/v3, IGMP proxy/snooping, MLD v1/v2, MLD Proxy/Snooping, and VLAN-based IPTV multicast |
|
QoS |
Traffic classification, priority processing, trTCM-based traffic policing, WRED, traffic shaping, HqoS, PQ/WRR/PQ + WRR, and ACL |
|
System Reliability |
GPON type B/type C protection, 10G GPON type B protection, BFD, ERPS (G.8032), MSTP, intra-board and inter-board LAG, In-Service Software Upgrade (ISSU) of the control board, 2 control boards and 2 power boards for redundancy protection, in-service board fault detection and rectification, and service overload control |
Thank you!
