| Switch class | Managed |
| Application | Medium and large companies |
| Switch layer | L2 |
| Network architecture | GigabitEthernet |
| Number of 10/100 Mbps ports | None |
| Number of 10/100/1000 Mbps ports | 28 |
| 10/100/1000/2500 Mbps ports | None |
| Number of 10Gb ports | None |
| Number of PoE ports (PoE & PoE+) | None |
| Number of PoE+ ports | 24 |
| Number of COMBO ports | 4 |
| Number of SFP ports | 4 |
| Number of SFP+ ports | None |
| Number of SFP56 ports | None |
| Number of QSFP+ ports | None |
| Console port | Yes |
| Forwarding mode | Store-and-forward |
| Throughput | 56 (Gigabity na sek.) |
| Forwarding rate | 41.66 (Mpps) |
| Packet buffer | 4 (MegaBajt) |
| MAC address table size | 8000 |
| Support for Jumbo frames | Yes |
| Jumbo frame size | 9.6 (Kilobajt) |
| Stackability | No |
| Number of VLAN groups | 4096 |
| VLAN | - Access
- Trunk
- Hybrid
- Support port, protocol, MAC-based VLAN partitioning
- Support GVRP dynamic VLAN registration
- Voice VLAN
|
| Supported protocols and standards | - IEEE 802.3
- IEEE 802.3u
- IEEE 802.3ab/ad/az/af/at
- IEEE 802.3x
- IEEE 802.1q
- IEEE 802.1p
|
| QoS | - Based on 802.1p (COS) classification
- Based on the DSCP classification
- Classification based on source IP, destination IP and port number
- Support SP, WRR scheduling strategy
- Support flow rate limit CAR
|
| Security | - DOS defense
- Support CPU protection and limits the rate of sending CPU packets
- ARP binding (IP, MAC, PORT binding)
|
| Management, monitoring, configuration | - CLI: Support serial port command line management
- SSH: Support SSHv1/2 remote management
- TELNET: Support telnet remote management
- WEB: Support Layer 2 settings, Layer 2 and Layer 3 monitor
- SNMP: SNMP V1/V2/V3; Support trap: ColdStart, WarmStart, LinkDown, LinkUp
- RMON: Support RMON v1
- POE: Support PoE power supply
- Support DHCP Snooping, Option82
- Support dynamic ARP detection
- Support TACACS+ certification
- Support DNS certification
- Support port security settings
- Support MVR protocol
- Support cable detection VCT function
- Support UDLD protocol
|
| L2 features | - Port Management: Enable/Disable Port; Speed, Duplex, MTU Setting; Flow-control; Port Information Check
- Port Mirroring: Supports both side-way ports mirroring
- Port Speed Limit: Supports port-based input/output bandwidth management
- Port Isolation: Support the downlink port isolation and can communicate with the uplink port
- Storm Suppression: Supports unknown unicast, multicast, unknown multicast broadcast type storm suppression; Storm suppression based on bandwidth regulation and storm filtering
- Link Aggregation: Support static manual aggregation; Support LACP dynamic aggregation
- MAC: Support static addition, deletion; MAC addresses learning limit; Support dynamic aging time setting
- Spanning tree: Support STP spanning tree protocol, Supports RSTP Rapid Spanning Tree Protocol, Supports MSTP Rapid Spanning Tree Protocol
- Multicast: Support static addition, deletion, IGMP-snooping; Support MLD-Snooping; Support v1/2/3 dynamic multicast monitor
- DDM: Support SFP/SFP+DDM
|
| Other functions | - ACL: Based on source MAC, destination MAC, protocol type, source IP, destination IP, L4 port
- LLDP: Support LLDP link discovery protocol
- User settings: Add/delete users
- Log: User login, operation, status, events
- Certification: Support 802.1x port authentication; Support AAA certification
- Network diagnosis: Support ping, telnet, trace
- System Management: Device reset, configuration save/restore, upgrade management, time setting, etc.
|
| Chassis type | Rack |
| Fan | No |
| Power supply | Internal |
| Power consumption | 300 (Watt) |
| Mean time between failures (MTBF) | 100000 (Hour) |
| Power supply | - Napięcie wejściowe urządzenia: AC110-240V;
- Wyjście: DC 52V 5.76A
- Całkowita moc: 300W
PoE: - Standard PoE: IEEE802.3at (30 W) i IEEE802.3af (15,4 W)
- Zgodność z PoE: IEEE 802.3af/at adaptacyjna
- Wyjście portu POE: DC48-55V
- Przypisanie pinów zasilania: Zasilanie przez zapasowe pary 1/2(+) i 3/6 (-)
|
| Dimensions | 445 x 285 x 45 mm |
| Environment requirements | - Temperatura pracy:-20° ~ 55°C;
- Temperatura przechowywania: -40 ° ~ 85 ° C;
- Wilgotność robocza: 10% ~ 95%, bez kondensacji
- Wysokość robocza: do 10 000 stóp (3000 metrów)
- Wysokość przechowywania: do 10 000 stóp (3000 metrów)
|
| Width | 87 |
| Height | 505 |
| Depth | 370 |
| Weight | 4263 |
| Description |
GS2028PS4 24-portowy zarządzalny gigabitowy przełącznik PoE+ z 4 gigabitowymi portami combo - 24 porty Gigabit POE, 4 porty Gigabit Combo, 1 port konsolowy
- Kompatybilne z IEEE802.3at and IEEE802.3af
- Port Ethernet obsługuje funkcje adaptacyjne 10/100/1000M i POE
- Konstrukcja bez wentylatora, naturalne chłodzenie, montaż w stojaku 1U
- Wsparcie WEB, TELNET, CLI, SSH, SNMP, RMON management
- Wsparcie POE Power Management
- Lightning Protection Surge
|
