Cisco / CBS250-48P-4G / 48 Port Gigabit (48 PoE - 370 W) 2 x 1GE combo + 4 x 1GE SFP  Smart

Cisco / CBS250-48P-4G / 48 Port Gigabit (48 PoE - 370 W) 2 x 1GE combo + 4 x 1GE SFP Smart

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CBS250-48P-4G Specification

CBS250-48P-4G Specification



Capacity in millions of packets per second (mpps) (64-byte packets)


Switching capacity in gigabits per second (Gbps)


Power dedicated to PoE


Number of ports that support PoE


Total system ports

52 Gigabit Ethernet

RJ-45 ports

48 Gigabit Ethernet

Packet buffer

3 MB

Unit dimensions (W x D x H)

445 x 350 x 44 mm (17.5 x 13.78 x 1.73 in)

Layer 2 switching


Support for up to 255 active VLANs simultaneously

Port-based and 802.1Q tag-based VLANs

Management VLAN

Guest VLAN

Voice VLAN

Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of QoS. Voice Services Discovery Protocol (VSDP) delivers networkwide zero-touch deployment of voice endpoints and call control devices

Layer 3 routing

IPv4 routing

Wire-speed routing of IPv4 packets

Up to 32 static routes and up to 16 IP interfaces

IPv6 routing

Wire-speed routing of IPv6 packets

Layer 3 interface

Configuration of Layer 3 interface on physical port, LAG, VLAN interface, or loopback interface


Secure Sockets Layer (SSL)

SSL encrypts all HTTPS traffic, allowing secure access to the browser-based management GUI in the switch

Secure Shell (SSH) Protocol

SSH is a secure replacement for Telnet traffic. Secure Copy (SCP) also uses SSH. SSH v1 and v2 are supported.

IEEE 802.1X (authenticator role)

Remote Authentication Dial-In User Service (RADIUS) authentication, guest VLAN, single/multiple host mode, and single/multiple sessions

STP loopback guard

Provides additional protection against Layer 2 forwarding loops (STP loops)

Secure Core Technology (SCT)

Ensures that the switch will receive and process management and protocol traffic no matter how much traffic is received

Secure Sensitive Data (SSD)

A mechanism to manage sensitive data (such as passwords, keys, and so on) securely on the switch, populating this data to other devices, and secure autoconfig. Access to view the sensitive data as plain text or encrypted is provided according to the user-configured access level and the access method of the user

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