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Layer 2 switching
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MAC table
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Up to 8,192 MAC addresses
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Spanning Tree Protocol (STP)
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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
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Port grouping
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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
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Support for up to 256 VLANs simultaneously
Port-based and 802.1Q tag-based VLANs
Management VLAN
Guest VLAN
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Auto voice VLAN
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Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS
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QinQ VLAN
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VLANs transparently cross a service provider network while isolating traffic among customers
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Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP)
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Protocols for automatically propagating and configuring VLANs in a bridged domain
|
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Head-Of-Line (HOL) blocking
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HOL blocking prevention
|
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Jumbo frame
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Frame sizes up to 9216 supported
|
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Loopback detection
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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.
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Automatic Media-Dependent Interface Crossover (MDIX)
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Automatically adjusts transmit and receive pairs if an incorrect cable type (crossover or straight-through) is installed.
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Security
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ACLs
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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
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Port security
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Creates the ability to lock source MAC addresses to ports; limits the number of learned MAC addresses
|
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IEEE 802.1X (authenticator role)
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802.1X: RADIUS authentication; guest VLAN;
Single-host, multiple-host, and multisession mode
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RADIUS, TACACS+
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Supports RADIUS and TACACS authentication; switch functions as a client
|
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MAC address filtering
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Supported
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Storm control
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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
|
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Spanning Tree Loop Guard
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This feature provides additional protection against Layer 2 forwarding loops (STP loops).
|
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Secure Shell (SSH) Protocol
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SSH is a secure replacement for Telnet traffic. SCP also uses SSH. SSH v1 and v2 are supported
|
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Secure Sockets Layer (SSL)
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SSL support: Encrypts all HTTPS traffic, allowing highly secure access to the browser-based management GUI in the switch
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QoS
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Priority levels
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8 hardware queues per port
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Scheduling
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Strict priority and Weighted Round-Robin (WRR) queue assignment based on DSCP and class of service (802.1p/CoS)
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Class of service
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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
|
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Rate limiting
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Ingress policer; egress shaping and rate control; per VLAN, per port, and flow-based
|
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Congestion avoidance
|
A TCP congestion avoidance algorithm is required to reduce and prevent global TCP loss synchronization
|
Switch
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Bạn đang cần tư vấn về sản phẩm: SG220-26P-K9 ?
Thiết bị chuyển mạch Cisco SG220-26P-K9-EU có 2 cổng quang, 24 cổng cấp POE lên tới 15W với tổng công suất 180W
Cisco 24 10/100/1000 PoE ports with 180 W power budget,2 Gigabit RJ45/SFP combo port, có 24 cổng tốc độ 10/100/1000 với 180W PoE, + 2 cổng RJ45/SFP ko có PoE ạ.
Giá Switch Cisco SG220-26P-K9 đã được gửi vào mail vui lòng check mail để biết được thông tin anh nhé.
Switch Cisco SG220-26P-K9 có 2 quạt bên trong thiết bị nhé. Khi sử dụng ở các điều kiện thì gây ra các tiếng ồn như sau: <32°C=25.6dB ;32°C-40°C=37.2dB ;>40°C=41.5dB bạn nhé.