DS-3E2528

 DS-3E2528 supports the telecom-level Ethernet-ring protection protocol with a protection shift time of less  than 50ms, STP/RSTP, backup of active and standby uplinks, and LACP link aggregation to cater to the  requirements of high reliability of carriers;   DS-3E2528 has powerful ACL functions to access and control L2-L7 data, providing carriers flexible and various  policy control methods;   DS-3E2528 supports In-Service Software Upgrade (ISSU) to ensure the unremitting data forwarding during  system upgrade;   DS-3E2528 supports various L2 multicast functions such as IGMP-snooping, user fast-leave mechanism and  trans-vlan multicast copy;   DS-3E2528 supports priority retagging and complicated flow classification based on VLAN, MAC, source  address, destination address, IP or priority to better streamline carrier’s services;   DS-3E2528 provides flexible bandwidth control policies, supporting port-/flow-based flow limit, and ensuring  the line speed forwarding of each port to make sure the high quality of network services;   DS-3E2528 supports multiple queue schedule algorithms such as SP, WRR, or “SP plus WRR”;   Equipment-level security: The advanced hardware infrastruct...

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 DS-3E2528 supports the telecom-level Ethernet-ring protection protocol with a protection shift time of less
than 50ms, STP/RSTP, backup of active and standby uplinks, and LACP link aggregation to cater to the
requirements of high reliability of carriers;
 DS-3E2528 has powerful ACL functions to access and control L2-L7 data, providing carriers flexible and various
policy control methods;
 DS-3E2528 supports In-Service Software Upgrade (ISSU) to ensure the unremitting data forwarding during
system upgrade;
 DS-3E2528 supports various L2 multicast functions such as IGMP-snooping, user fast-leave mechanism and
trans-vlan multicast copy;
 DS-3E2528 supports priority retagging and complicated flow classification based on VLAN, MAC, source
address, destination address, IP or priority to better streamline carrier’s services;
 DS-3E2528 provides flexible bandwidth control policies, supporting port-/flow-based flow limit, and ensuring
the line speed forwarding of each port to make sure the high quality of network services;
 DS-3E2528 supports multiple queue schedule algorithms such as SP, WRR, or “SP plus WRR”;
 Equipment-level security: The advanced hardware infrastructure design realizes the level-based packet
schedule and packet protection, prevents DoS-/TCP-related SYN Flood, UDP Flood, Broadcast Storm or large
traffic attacks, and supports level-based command line protection, endowing different levels of users with
different management permissions;
 Perfect security authentication mechanisms: IEEE 802.1x, Radius and BDTacacs+;
 DS-3E2528 supports storm/multicast/unicast limit which ensures the normal running of equipment in harsh
network conditions;
 DS-3E2528 supports perfect ring detection mechanism which ensures the long-term stable running of network;
 DS-3E2528 supports port isolation within the same VLAN, DHCP-Snooping, and IP plus MAC plus Port binding
for ensuring user data security;
 DS-3E2528 supports many management modes such as the console port, Telnet, SSH;
 DS-3E2528 supports the WEB management mode, which is easy and efficient so that it makes installation and
debugging convenient;
 DS-3E2528 supports TFTP-patterned file upload/download management;
Features and Functions


DS-3E2528
Gigabit Full Managed Switch






Item DS-3E2528
Port number 24 x 10/100/1000Base-T ports, 4 1000Base-X SFP ports, 1 Console port
Switching capacity 56Gbps
Packet forwarding rate 42Mpps
MAC address table 8K
Dimensions(L x H x D) 440 mm x 45 mm x 230 mm
Consumption <15W
Power supply AC：100V-240V，50Hz±10%
Environment
Operating temperature/humidity: 0℃-45℃，5%-95% non-condensing
Storage temperature/humidity: -20℃-70℃；5%-95% non-condensing
MAC exchange
Static configuration and dynamic MAC learning; MAC browsing and removal
Configurable aging time of the MAC address; Limited number of learnable MAC
addresses; MAC filtration
VLAN 4K VLAN; GVRP; QinQ; Private VLAN
STP
802.1D (STP), 802.1W (RSTP) and 802.1S (MSTP)
BPDU protection, root protection, and loopback protection
Multicast
IGMP v1/v2/v3
IGMP snooping
IGMP Fast Leave
Multicast group strategy and quantity limitation
QoS
Flow classification based on L2~4 protocols
CAR flow limit
802.1P/DSCP priority re-labeling
SP, WRR, and “SP+WRR”
Congestion avoidance mechanisms like Tail-Drop and WRED
Flow monitoring and flow shaping
Security
L2/L3/L4 ACL flow identification and filtration
DDoS attack prevention, TCP’s SYN Flood attack prevention, UDP Flood attack
prevention, etc
Broadcast/multicast/unknown unicast storm-control
Port isolation
Port security, and “IP+MAC+port” binding
Reliability
Static/LACP link aggregation
EAPS and ERPS
Management
Console, Telnet, SSH2.0, Web
SNMP v1/v2/v3
TFTP
RMON



Specifications





Physical Interfaces

No. Abbrev. Name Description
1 CONSOLE Console port Manages the switch locally.
2 SYS System indicator
If the indicator is always on, the system is being started.
If the indicator flickers, the system works normally.
3 PWR Power indicator If the switch is powered on, the indicator is on.
4 Link/ACT LINK/ACT indicator of each port
If the indicator is on in orange: 10/100M,
If the indicator is on in green: 1000M
If the indicator is not on: no signal is transmitted.
5 Reset Reset switch Return to the factory setting.
6 / 24 gigabit RJ45 ports Forwards the 10/100M/1000M Ethernet electric signals
7 / 4 SFP ports Forwards 1000M Ethernet optical signals.

Front Panel