Smart Gigabit Switch Poe 50 Port Cisco Sg220-52p
Thông số kỹ thuật
- Thương hiệu: CISCO
- Bảo hành: 12 tháng
- Tình trạng: Mới 100%
- Performance
- Forwarding rate in millions of packets per second (mpps; 64-byte packets): 74.40
- Switching capacity in Gigabits per second: 100 Gbps
- Layer 2 switching
- MAC table: 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 - 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 9,216 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
- Multicast: Internet Group Management Protocol (IGMP) Versions 1, 2, and 3 Snooping
- IGMP limits bandwidth-intensive multicast traffic to only the requesters; supports 256 multicast groups
- IGMP querier: IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence of a multicast router
- POE:
- PoE Power Budget: 375W
- Number of Ports That Support PoE: 48 ports
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