Layer |
Layer 2, 3 Switching |
|
|
Spanning Tree Protocol |
Standard 802.1d spanning tree support Fast convergence using 802.1w (Rapid Spanning Tree |
|
[RSTP]),enabled by default Multiple spanning tree instances using 802.1s (MSTP); 16 instances |
|
Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP) |
|
|
Port grouping/link aggregation |
Support for IEEE 802.3ad Link Aggregation Control Protocol (LACP) |
|
Up to 32 groups |
|
Up to 8 ports per group with 16 candidate ports for each (dynamic) 802.3ad LAG |
|
|
Voice VLAN |
Voice traffic is automatically assigned to a voice-specific VLAN and treated with appropriate levels of |
|
QoS. Auto voice capabilities deliver networkwide zero-touch deployment of voice endpoints and call |
|
control devices. |
|
|
VLAN |
Support for up to 4094 active VLANs simultaneously; port-based and 802.1Q tag-based VLANs; |
|
MAC-based VLAN Management VLAN Private VLAN with promiscuous, isolated, and community port |
|
Guest VLAN, unauthenticated VLAN, protocol-based VLAN, IP subnet-based VLAN, CPE VLAN |
|
Dynamic VLAN assignment using RADIUS server along with 802.1x client authentication |
|
|
Multicast TV VLAN |
Multicast TV VLAN allows the single multicast VLAN to be shared in the network while subscribers |
|
main in separate VLANs. This feature is also known as Multicast VLAN Registration (MVR). |
|
|
Q-in-Q |
VLANs transparently cross over a service provider network while isolating traffic among customers. |
|
|
GVRP/GARP |
Generic VLAN Registration Protocol (GVRP) and Generic Attribute Registration Protocol (GARP) enable |
|
automatic propagation and configuration of VLANs in a bridged domain. |
|
|
Unidirectional Link Detection (UDLD) |
UDLD monitors physical connection to detect unidirectional links caused by incorrect wiring or port |
|
faults to prevent forwarding loops and blackholing of traffic in switched networks. |
|
|
DHCP relay at Layer 2 |
Relay of DHCP traffic to DHCP server in a different VLAN. Works with DHCP option 82. |
|
|
IGMP (versions 1, 2, and 3) snooping |
Internet Group Management Protocol (IGMP) limits bandwidth-intensive multicast traffic to only the |
|
equesters; supports 4K multicast groups (source-specific multicasting is also supported). |
|
|
IGMP querier |
IGMP querier is used to support a Layer 2 multicast domain of snooping switches in the absence |
|
of a multicast router. |
|
|
HOL blocking |
Head-of-line (HOL) blocking. |
|
|
IPv4 routing |
Wirespeed routing of IPv4 packets, Up to 7K routes and up to 256 IP interfaces |
|
|
Wirespeed IPv6 static routing |
Up to 7K routes and up to 256 IPv6 interfaces |
|
|
Layer 3 interface |
Configuration of Layer 3 interface on physical port, LAG, VLAN interface, or loopback interface |
|
|
CIDR |
Support for classless interdomain routing |
|
|
RIP v2 |
Support for Routing Information Protocol version 2 for dynamic routing |
|
|
VRRP |
Virtual Router Redundancy Protocol (VRRP) delivers improved availability in a Layer 3 network by |
|
providing redundancy of the default gateway servicing hosts on the network. VRRP versions 2 and 3 are |
|
supported. Up to 255 virtual routers are supported |
|
|
Policy-based routing (PBR) |
Flexible routing control to direct packets to different next hop based on IPv4 or IPv6 ACL |
|
|
DHCP server |
Switch functions as an IPv4 DHCP server serving IP addresses for multiple DHCP pools/scopes. |
|
Support for DHCP options |
|
|
DHCP relay at Layer 3 |
Relay of DHCP traffic across IP domains |
|
|
User Datagram Protocol (UDP) relay |
Relay of broadcast information across Layer 3 domains for application discovery or relaying of |
|
BOOTP/DHCP packets |
|
|
Console port |
Cisco Standard RJ45 console port |
|
|
OOB management port |
Dedicated Gigabit management port for out-of-band management on SG550XG models |
|
|
RPS |
RPS connector |
|
|
USB slot |
USB Type-A slot on the front panel of the switch for easy file and image management |
|
|
Buttons |
Reset button |
|
|
Cabling type |
Unshielded twisted pair (UTP) Category 5 or better; fiber options (SMF and MMF); coaxial SFP+ |
|
|
LEDs |
System, master, fan, RPS, stack ID, link/speed per port |
|
|
Power |
100 - 240V 47 - 63 Hz, internal, universal |
|
|