SNA8816T 16 Port Gepon OLT System Description

The SNA8816T is a GEPON OLT system based on IEEE802.3ah Gigabit EPON standard. It comes with maximum 16 GEPON ports, which can connect up to 1024 GEPON ONUs at 1:64 Fiber Ratio.

It is a Telecom Grade GEPON OLT system designed for ISPs offering high quality, high speed and high stability internet services( such as IPTV, VoIP and Data Transmission services) to Subscribers.

Main Advantages: 

Generally, a normal 16 port GEPON OLT supports only layer 2 access network features. But unlike the normal GEPON OLT, the SNA8816T supports rich Layer 2, 3, 4 network features which enables you apply it in Layer 2 access network and in Layer 3 aggregation network.

  • Support ayer 2/3/4 network features, enables you apply it in Layer 2 access network and Layer 3 aggregation network.
  • Support 1:64 Fiber Ratio at 20Km transmission distance, can connect up to 1024 remote ONUs.
  • Comes with plain PCBA design, fixing GEPON downlink ports and 1G uplink ports on board, saving installation space.
  • Support optional 10G uplink ports, enables ability of enlarging bandwidth by changing only Fiber SFP transceivers.
  • Support main power supply and backup power supply work in 1+1 mode, ensuring high stability of network.
  • Support DC Power supply, suitable for applying in ISPs’server room.
  • Support CLI command and OAM management, support OAM alarms of ONU failure events.
  • Support CTC2.0, 2.1 and 3.0 completely, enables high compatibility with ONUs from different brands.
  • Support Quick Network Recovery, Network resumes in less than 50ms in case of server and device reboots.
  • Support SNMP V1, V2, V3, Telnet or NMS management, enables remote management, remote problem detects and remote problem solving of SNA8816T GEPON OLT and the registered ONUs.

Gepon Technology based on IEEE802.3ah standard:

  • Support IEEE802.3ah Gigabit Epon standard,
  • Support 20Km transmission distance over Single Fiber
  • Support 8 Gepon downstreaming ports, support 1:64 fiber splitting ratio, can connect up to 512 ONUs
  • Support encrypted Triple Churning for upstreaming and downstreaming
  • Support China Telecom Standard CTC 2.0, 2.1, 3.0
  • Support DBA Dynamic Bandwidth Assignation,
  • Support ONU auto detection and reporting illegal ONU registrations
  • Support auto-inspection for received optical fiber power.
  • Support 1.25Gbps GEPON transmission, Wavelength of Gepon SC: Uplink: 1310nm, Downlink: 1490nm
  • Support CATV over EPON application, CATV wavelength at 1550nm.
  • Average Optical Transmitting Power for the Gepon SC Port: +2dbm to +7dbm
  • Optical reception sensibility of the Gepon SC Port: -30dBm
  • Max Optical Fiber Ratio: 1:64 at 20Km transmission distance
  • Support Standard OAM and expandable OAM management features
  • Support upgrading ONUs remotely in batches.

Hardware Features

  • Fully Compatible with IEEE802.3, IEEE802.3u, IEEE802.3z, IEEE802.3ah standard
  • Support 16 GEPON SC ports, 1.25Gbps transmission rate.
  • Support 8* Gigabit SFP uplink interfaces + 8*10/100/1000Base-Tx combo
  • Support Hot Swap of GEPON SFP Transceivers
  • Support EAPS fast loopback protection and GEPON Optical Path protection.
  • MAC address table: 16K
  • VLAN Table: 1-4094
  • Power Supply: Main Power Supply + Backup Power supply
  • AC Power Supply: AC: 90~264V, 50/60Hz
  • DC: -36~-72V
  • SNA8816T 16 Port OLT chassis height: 1U

Hardware Specifications:

Hardware Capacity
Hardware Standards IEEE802.3, IEEE802.3u, IEEE802.3z, IEEE802.3ah standard
GEPON Ports 16 GEPON SC ports
Uplink Ports 8 Gigabit SFP Slots, and/or 2*10G SFP+ interfaces
Cooling System 1U Chassis with Cooling Fans equipped inside
Switching Capacity 128Gbps
MAC Address Table 32K
VLAN Table 1-4094
Hot Swap Support Hot Swap of GEPON SFP Transceiver
Flash 128Mb
Memory 1Gbps
Routing Table 12K
Power Supply Redundant Power Supply: 110-240V AC, 50/60Hz
Support optional DC Power Supply
Power Consumption: <100w
Gepon Characters Support IEEE802.3ah Gigabit Epon standard,
Support max of 16 Gepon SC ports for downlinking,
Support the transmission rate of 1.25Gbps
Wavelength of Gepon SC ports: Uplink: 1310nm, Downlink: 1490nm
Average Optical Transmitting Power for the Gepon SC Port: +2dbm to
Optical reception sensibility of the Gepon SC Port: -30dBm ,
Max Optical Fiber Ratio: 1:64
Support CTC 2.0, 2.1, 3.0 China Telecom Gigabit Epon standard
Support Standard OAM and expandable OAM management features
Support Encryption for uplinking and downlinking data
Support upgrading a single ONU or to multiple ONUs simultaneously and remotely by the System administrator

Support ONU authentication, can report illegal ONU registering events

 Software Specifications: 

2 Features Protocols IEEE802.1Q, IEEE802.1P, IEEE802.3X, IEEE802.3ad, IEEE802.1D, IEEE802.1W, IEEE802.1S, IPv4, IPv6
VLAN Support 1-4094 VLAN entries
Support Port-based/MAC-based/IP subnet-based VLAN
Support Port-based QinQ and Selective QinQ (Vlan Stacking)
Support VLAN Swap / VLAN Remark /VLAN Translation
Suport GVRP Dynamic VLAN registration
Support VLAN add, delete and replace based on ONU service flow.
QOS Support Rate-limit to sending/receiving packet of each port, or user defined flow. Offers general flow monitor and user-defined flow monitor 
Support Prioritized remark to port, or to user defined flow. 
Offers IEEE802.1P, DSCP priority and Remark
Support CAR (Committed Access Rate), Traffic Shaping and flow statistics
Support Packet mirroring and redirecting of interface or user defined flow 
Support super queue scheduler based on port and user-defined flow. Each port/Flow supports 8 prioritized queues and scheduler of SP,WRR and SF+WRR. 
Offerings congestion avoidance mechanism,Supports Tail-Drop and WRED
Spanning Tree Support IEEE 802.1D Spanning Tree Protocol (STP)
Support IEEE 802.1w Rapid Spanning Tree Protocol (RSTP)
Support IEEE 802.1s Multiple Spanning Tree Protocol instances (MSTP)
Support Remote ONU Loop Detecting alarming
MAC Support MAC Black Hole
Support Port MAC Limitation
Offers 16K MAC addresses
Multicast IGMP V1, V2, V3, IGMP Snooping, 
Access Control List Support standard and expandable ACL
Support ACL in Time Interval
Support packet filter, Source/Destination MAC filter, Source/Destination IP filter, Port Filter, Protocol Filter, VLAN filter, VLAN range filter, MAC Address range filter, Invalid Frame filter,
Support up to 50 concurrent service traffic identification  
Support packet filtration of L2~L7 in 80 bytes of IP packet head
Port Support Port Based Bi-directional bandwidth control
Static link aggregation and LACP( Link Aggregation Control Protocol )
Support Port mirroring and Traffic mirroring
User Security Support Anti-ARP-spoofing
Support Anti-ARP-flooding
Support IP Source Guard create IP+VLAN+MAC+Port binding
Support Port Isolation
Support MAC address binds to port and port MAC address filtration
Support IEEE 802.1x and AAA/Radius authentication
OLT Security Support Anti-DOS attack (such as ARP, Synflood, Smurf, ICMP attack), ARP
detection, worm and Msblaster worm attack
Support SSHv2 Secure Shell
Support SNMP v3 encrypted management
Support Security IP login through Telnet
Support Hierarchical management and password protection of users
Network Security Support User MAC and ARP traffic verification
Support Restrict ARP traffic per user and kick-out user sends ARP traffic
Support Dynamic ARP table binding
Support IP/VLAN/MAC/Port binding
Support L2 to L7 ACL flow filtration mechanism  
Support Port broadcast/multicast suppression and auto-shutdown risky port
Support URPF to prevent IP address from counterfeit and attack
Support DHCP Option 82 and PPPoE+ (Indicating User physical location)
Support plaintext authentication of OSPF,RIPv2, BGPv4 packets and MD5
cryptograph authentication
IPv6 Multicast Support IPv6 SA/DA Classification
Support MLDv2 / MLDv2 Snooping
Support PIM-SMv6、PIM-DMv6、PIM-SSMv6
IPv4 Multicast Support IGMPv1/v2/v3, IGMPv1/v2/v3 Snooping, IGMP Filter
Support MVR and multicast copy over different VLANs
Support IGMP Fast leave, IGMP Proxy
Loop Detect Support EAPS and GERP (recover-time <50ms)
Support Loopback-detection
Link Protection Support FlexLink (recover-time <50ms)
Support RSTP/MSTP (recover-time <1s)
Support LACP (recover-time <10ms)
Support BFD
System Reliability Ensuring reliability with VRRP (Virtual Router Redundancy Protocol)
Management sFlow Support RFC3176 sFlow
Telnet Support CLI commands for Telnet management
SNMP Support SNMP V1, V2, V3
NMS Support SNMP based NMS management
RMON Support RMON Group 1, 2, 3, 9
MIB Support Private and Public MIB
Working Environment Humidity Working: 10%~90% non-condensation / Standby: 5% to 95% non-condensation
Work Temperature Working: 0℃ to 65℃ / Standby: -20℃ to 70℃


Contact us

Shenzhen Chima Technologies Co Limited



Add:5/F, Building NO.1, TongXin Industry Zone, HengGang, LongGang, Shenzhen, China