5-100-01012002 02/12
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ZyXEL Communications Corp. All other brands, product names, or trademarks mentioned are the property of their 
respective owners. All specifications are subject to change without notice.
ES3500-24
24-port FE L2 Switch 
with GbE Uplink
ES3500-24
24-port FE L2 Switch 
with GbE Uplink
*: Bi-directional SFP must be used in pairs (For example,connect 1 x SFP-BX1310-10-D and 1 x SFP-BX1490-10-D as a solution)
User Security and Authentication
• IEEE 802.1X authentication
• IP source guard (static IP/MAC binding, DHCP 
 snooping, ARP inspection)
• IP subnet VLAN & VLAN isolation
• Limiting MAC number per port
• Loop guard prevents a switch from being 
 affected by another switch which is already in a 
 looping status
• MAC filtering per port secures access to each 
 port
• MAC freeze
• Port security, port isolation, port mirroring
• Static MAC forwarding per port: only specified 
 MAC addresses can access the network (port 
 security)
• Wire speed filtering per MAC/IP/TCP/UDP
• Wire speed mirroring per MAC/IP/TCP/UDP
• Wire speed rate limiting per MAC/IP/TCP/UDP 
• GVRP, automatic VLAN member registration
• Guest VLAN
• CPU protection
• PPPoE option 82
Network Administration Security
• SSH v1/v2
• SSL
• RADIUS accounting
• TACACS+ authentication, accounting
• NTP, daylight saving
IPv6 Host
• IPv6 over Ethernet (RFC 2464) 
• IPv6 Addressing Architecture (RFC 4291)
• Dual stack (RFC4213)
• ICMPv6 (RFC4884)
• Path MTU (RFC 1981)
• Minimum Path MTU size of 1280 (RFC 5905)
• Encapsulation for minimum PMTU of 1500
• Neighbor Discovery (RFC4861)
• DHCPv6 Relay/Client
Network Management
• Supports ZyXEL iStacking™, up to 24 switches 
 can be managed by one IP address
• Intuitive Web-based management with all 
 features configurable
• Text-based configuration profile for massive 
 deployment
• Telnet CLI (Cisco like)
• SNMP v1, v2c, v3
• SNMP trap group
• RMON four RMON groups 1, 2, 3, 9 (history, 
 statistics, alarms, and events) for enhanced traffic 
 management, monitoring, and analysis
• Out-of-Band management: RS-232c local 
 console
• Firmware upgrade, configuration backup/restore 
 via ftp
• Alarm led indicator for early warning of 
 hardware troubles
• Send system trap to trap server
• DHCP relay, DHCP relay per VLAN, DHCP relay 
 option 82, DHCP client
• Port mirroring: supports source/destination/ 
 both port mirroring
• IEEE 802.3ah Ethernet Operations, 
 Administration and Management (OAM)
• sflow
Intelligent ACL
(L2/L3/L4 Access List Control)
• Based on port
• Based on MAC + VLAN ID
• Based on IP address (source/destination)
• Based on protocol type
• Based on TCP/UDP port number
MIB Information
• RFC1213 MIB II
• RFC1493 Bridge MIB
• RFC1643 Ethernet MIB
• RFC1757 RMON group 1, 2, 3, 9
• RFC2011 IP MIB
• RFC2012 TCP MIB
• RFC2013 UDP MIB
• RFC2233 ifVHC Packet Group
• RFC2674 VLAN MIB
• RFC2925 PING-MIB and TRACEROUTE-MIB
• ZyXEL private MIB 
• Management Information Base (MIB) for IP 
 (RFC4293) 
• IP Forwarding Table MIB (RFC4292)
• Management Information Base for Transmission 
 Control Protocol (RFC4022)
• Management Information Base for User 
 Datagram Protocol (RFC4113)
Safety Agency Certification
• UL 60950-1
• CSA 60950-1
• EN 60950-1
• IEC 60950-1
• EU RoHS compliant
Accessories
SFP Transceivers (Optional)
Speed Model Type Description
 SFP-1000T RJ-45 connector Up to 100 m (300 ft) using standard Ethernet cable
 SFP-SX-D LC connector SFP SX 550 m (1800 ft) commercial type transceiver, DDMI version
 SFP-LX-10-D LC connector SFP LX 10 km (6 mi) commercial type transceiver, DDMI version
Gigabit SFP-BX1310-10-D LC connector Bidirectional singlemode, up to 10 km (6 mi) reach, DDMI version*
 SFP-BX1490-10-D LC connector Bidirectional singlemode, up to 10 km (6 mi) reach, DDMI version*
 SFP-LHX1310-40-D LC connector SFP LHX 1310 wavelength 40 km (24 mi) commercial type transceiver, DDMI version
 SFP-ZX-80-D LC connector SFP ZX 80 km (50 mi) commercial type transceiver, DDMI version