|
Layer 2 switching
|
|
MAC table
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Up to 8,192 MAC addresses
|
|
Spanning Tree Protocol (STP)
|
Standard 802.1d Spanning Tree support, enabled by default
Fast convergence using 802.1w (Rapid Spanning Tree [RSTP])
Multiple Spanning Tree instances using 802.1s (MSTP)
16 instances are supported
|
|
Port grouping
|
Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP)
- Up to 8 groups
- Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad link aggregation
Load balance based on source and destination MAC address, or source and destination MAC/IP
|
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VLAN
|
Support for up to 256 VLANs simultaneously
Port-based and 802.1Q tag-based VLANs
Management VLAN
Guest VLAN
|
|
Auto voice VLAN
|
Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS
|
|
QinQ VLAN
|
VLANs transparently cross a service provider network while isolating traffic among customers
|
|
Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP)
|
Protocols for automatically propagating and configuring VLANs in a bridged domain
|
|
Head-Of-Line (HOL) blocking
|
HOL blocking prevention
|
|
Jumbo frame
|
Frame sizes up to 9216 supported
|
|
Loopback detection
|
Loopback detection provides protection against loops by transmitting loop protocol packets out of ports on which loop protection has been enabled. It operates independently of STP.
|
|
Automatic Media-Dependent Interface Crossover (MDIX)
|
Automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed.
|
|
Security
|
|
ACLs
|
Drop or rate limit based on source and destination MAC, VLAN ID or IP address, protocol, port, Differentiated Services Code Point (DSCP)/IP precedence, TCP/UDP source and destination ports, 802.1p priority, Ethernet type, Internet Control Message Protocol (ICMP) packets, IGMP packets, TCP flag
Support up to 512 rules
|
|
Port security
|
Creates the ability to lock source MAC addresses to ports; limits the number of learned MAC addresses
|
|
IEEE 802.1X (authenticator role)
|
802.1X: RADIUS authentication; guest VLAN;
Single-host, multiple-host, and multisession mode
|
|
RADIUS, TACACS+
|
Supports RADIUS and TACACS authentication; switch functions as a client
|
|
MAC address filtering
|
Supported
|
|
Storm control
|
Broadcast, multicast, and unknown unicast
|
|
DoS protection
|
DOS attack prevention
|
|
STP Bridge Protocol Data Unit (BPDU) Guard
|
This security mechanism protects the network from invalid configurations. A port enabled for BPDU Guard is shut down if a BPDU message is received on that port
|
|
Spanning Tree Loop Guard
|
This feature provides additional protection against Layer 2 forwarding loops (STP loops).
|
|
Secure Shell (SSH) Protocol
|
SSH is a secure replacement for Telnet traffic. SCP also uses SSH. SSH v1 and v2 are supported
|
|
Secure Sockets Layer (SSL)
|
SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based management GUI in the switch
|
|
QoS
|
|
Priority levels
|
8 hardware queues per port
|
|
Scheduling
|
Strict priority and Weighted Round-Robin (WRR) queue assignment based on DSCP and class of service (802.1p/CoS)
|
|
Class of service
|
Port-based; 802.1p VLAN priority-based; IPv4/v6 IP precedence, Type of Service (ToS), and DSCP-based; Differentiated Services (DiffServ); classification and re-marking ACLs, trusted QoS
|
|
Rate limiting
|
Ingress policer; egress shaping and rate control; per VLAN, per port, and flow-based
|
|
Congestion avoidance
|
A TCP congestion avoidance algorithm is required to reduce and prevent global TCP loss synchronization
|
Switch
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Dạ Switch Cisco SF220-24P 24 Ports PoE 180W 2x1GE RJ45/SFP Uplink, có 24 cổng 10/100 PoE + 2 cổng Gigabit, 2 SFP ports, Bộ nhớ flash 32MB, RAM 128MB, Dài, Cao, Rộng 440 x 44 x 250 mm, nặng: 3,64kg, dùng nguồn tích hợp 100-240 V, 50-60 Hz..
Một số thông tin đến anh Nhật Anh ạ.
Báo giá Thiết bị chuyển mạch Switch Cisco SF220-24P (SF220 24P) Cisco Small Business 220 Series 24 10/100 PoE ports with 180 W power budget, 2 Gigabit RJ45/SFP combo port đã được gửi qua email, bạn vui long check mail nhé.
Bên mình phân phối Thiết bị chuyển mạch Switch Cisco SF220-24P (SF220 24P) Cisco Small Business 220 Series 24 10/100 PoE ports with 180 W power budget, 2 Gigabit RJ45/SFP combo port chính hãng bạn nhé. Báo giá tốt đã được gửi vào email, bạn vui lòng check maill nhé.
Thiết bị chuyển mạch Switch Cisco SF220-24P (SF220 24P) Cisco Small Business 220 Series 24 10/100 PoE ports with 180 W power budget, 2 Gigabit RJ45/SFP combo port công suất poe 180W chia đều cho 12 cổng bạn nhé.