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Optical Line Terminal EPON OLT GCOM EL7500-16

  • 8U ultra-compact chassis, semi-slot high-density design
  • 1+1 master redundancy, 1+1 power redundancy
  • hot plug fan tray, intelligent speed and temperature control
  • 16 *slot ( 14 * line card service slot and 2 *master transmission slot )
  • GE/10GE/EPON board
  • 220Gbps high-speed backplane
  • IPv4/ IPv6 and MPLS hardware wire-speed forwarding capacity
  • full-load power consumption≤ 300 W

EL7500-16 is the latest EPON OLT launched by GCOM. It uses modularized design concept, combined with advanced industrial design and manufacture technology to provide users with broadband access with moderate density, high reliability, flexible networking, easy installation and maintenance. EL7500-16 offers the IPv4/ IPv6 linear forward capacity, incomparable service performance, operational security attribute. Therefore, it can supply operational BBA network large capacity, high speed and high bandwidth data, voice and video service access for its high reliability, high scalability and super service performance. According to different user scenarios, EL7500-16 can be applied to FTTB, FTTC, FTTH, etc.

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Main Features

backplane bandwidth 220Gbps
Switching Capacity 176Gbps
Forwarding Capacity(Ipv4/Ipv6) 131Mpps
Qty of total slots 16
Qty of service slots 14
Service port downlink maximum  48*GEPONUplink maximum 4* 10GE SFP+ / GE COMBO
Redundancy Design Double master redundancyDouble power supply redundancy
Power Supply AC: input 90~264V, 47~63Hz
DC: input 36V~72V
Power Consumption ≤300W
Dimensions (Width x Depth x Height) 483mm×352mm×364mm
Weight (Full-Loaded) ≤26kg
Environmental Requirements Working temperature: -10°C~45°C
Storage temperature: -40C~70C
Relative humidity: 10%~90%, non-condensing

Detailed Features

PON Features IEEE 802.3ah EPON
China Telecom/Unicom GEPON
Maximum 20 Km PON transmission distance
Each PON port supports the max. 1: 64 splitting ratio
Uplink and downlink triple churning encrypted function with 128Bits
ONU terminal legitimacy certification, report illegal ONU registration
DBA algorithm, the particle is 64Kbit/s
Standard OAM and extended OAM
ONU batch software upgrade, fixed time upgrade, real time upgrade
PON transmit and inspect receiving optical power
PON port optical power detection
L2 Features MAC 32K MAC address
MAC Black Hole
Port MAC Limit
16K MAC address
VLAN 4K VLAN entries
Port-based/MAC-based/protocol/IP subnet-based
QinQ and flexible QinQ (StackedVLAN)
VLAN Swap and VLAN Remark
PVLAN to realize port isolation and saving public-vlan resources
Spanning Tree STP/RSTP/MSTP
Remote loop detecting
Port Bi-directional bandwidth control
Static link aggregation and LACP(Link Aggregation Control Protocol)
Port mirroring
Security Features User’s Security Anti-ARP-spoofing
IP Source Guard create IP+VLAN+MAC+Port binding
Port Isolation
MAC address binding to the port and MAC address filtering
IEEE 802.1x and AAA/Radius authentication
Device Security Anti-DOS attack(such as ARP, Synflood, Smurf, ICMP attack), ARP
detection, worm and Msblaster worm attack
SSHv2 Secure Shell
SNMP v3 encrypted management
Security IP login through Telnet
Hierarchical management and password protection of users
Network Security User-based MAC and ARP traffic examination
Restrict ARP traffic of each user and force-out user with abnormal ARP traffic
Dynamic ARP table-based binding
IP+VLAN+MAC+Port binding
L2 to L7 ACL flow filtration mechanism on the 80 bytes of the head of user-defined packet
Port-based broadcast/multicast suppression and auto-shutdown risk port
URPF to prevent IP address counterfeit and attack
DHCP Option82 and PPPoE+ upload user’s physical location Plaintext authentication of OSPF, RIPv2 and BGPv4 packets and MD5
cryptograph authentication
IP Routing IPv4 ARP Proxy
DHCP Relay
DHCP Server
Static Routing
Equivalent Routing
Routing Strategy
ICMPv6 Redirection
Configured Tunnels
6to4 Tunnels
Dual stack of IPv6 and IPv4
Service Features ACL Standard and extended ACL
Time Range ACL
Flow classification and flow definition based on source/destination MAC address, VLAN, 802.1p, ToS, DiffServ, source/destination IP(IPv4/IPv6) address, TCP/UDP port number, protocol type, etc
packet filtration of L2~L7 deep to 80 bytes of IP packet head
QoS Rate-limit to packet sending/receiving speed of port or self-defined flow and provide general flow monitor and two-speed tri-color monitor of self-defined flow
Priority remark to port or self-defined flow and provide 802.1P, DSCP priority and Remark
CAR(Committed Access Rate), Traffic Shaping and flow statistics
Packet mirror and redirection of interface and self-defined flow
Super queue scheduler based on port or self-defined flow. Each port/
flow supports 8 priority queues and scheduler of SP, WRR and
Congestion avoid mechanism, including Tail-Drop and WRED
Multicast IGMPv1/v2/v3
IGMPv1/v2/v3 Snooping
IGMP Filter
MVR and cross VLAN multicast copy
IGMP Fast leave
IGMP Proxy
MLDv2/MLDv2 Snooping
Reliability Loop Protection EAPS and GERP (recover-time <50ms)
Link Protection FlexLink (recover-time <50ms)
RSTP/MSTP (recover-time <1s)
LACP (recover-time <10ms)
Device Protection VRRP host backup
Double fault-tolerant backup of host program and configuration files
1+1 power hot backup
Fan/board redundancy
Maintenance Network Maintenance Port real-time, utilization and transmit/receive statistic based on Telnet
RFC3176 sFlow analysis
802.3ah Ethernet OAM
RFC 3164 BSD syslog Protocol
Ping and Traceroute
Device Management CLI, Console port, Telnet
RMON (Remote Monitoring)1, 2, 3, 9 groups MIB
NGBNView network management

GCOM EL7500-16 datasheet


EL7500-16 datasheet

GCOM EL7500-16 manual


EPON manual