ifs NS4702-24P-4X-V2 User manual

NS4702-24P-4X-V2
Managed Switch User
Manual
P/N 1073707-EN • REV B • ISS 06OCT22

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©
2022 Carrier. All rights reserved. Information subject to change without prior notice.
This document may not be copied in whole or in part or otherwise reproduced without
prior written consent from
Carrier, except where specifically permitted under US and
international copyr
ight law.
Trademarks and patents
IFS
and associated names and logos are a product brand of Aritech, a part of Carrier.
Other trade names used in this document may be trademarks or registered trademarks
of the manufacturers or vendors of the respective products.
Manufacturer
PLACED ON THE MARKET BY:
Carrier Fire & Security Americas Corporation, Inc.
13995 Pasteur Blvd, P
alm Beach Gardens, FL 33418, USA
Authorized EU manufacturing representative:
Carrier Fire & Security B.V.,
Kelvinstraat 7, 6003 DH Weert, Netherlands.
Version
This document applies to
NS4702-24P-4X-V2.
FCC compliance
This device complies with part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) This device may not cause harmful interference, and (2) this
device
must accept any interference received, including interference that may cause undesired
operation.
FCC compliance
Class A:
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to part 15 of the F
CC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and u
sed in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interfer
ence at his own expense.
Canada
This Class A digital apparatus complies with CAN ICES
-003 (A)/NMB-3 (A).
Cet appareil numérique de la classe A est conforme à la norme CAN ICES
-003
(A)/NMB
-3 (A).
ACMA compliance
Notice!
This is a Class A product. In a domestic environment this product may cause
radio interference in which case the user may be required to take adequate measures.
Certification
EU directives
This product and
- if applicable - the supplied accessories too are marked with "CE" and
comply therefore with the applicable harmonized European standards listed under the
EMC Directive 2014/30/EU, the RoHS Directive 2011/65/EU.
2012/19
/EU (WEEE directive):
Products marked with this symbol cannot be disposed of
as
unsorted municipal waste in the European Union. For proper recycling, return this
product to your local supplier upon the purchase of equivalent new equipment, or
dispose of it at designated collection points. For more information see:
www.recyclethis.info
.
Product warnings and
disclaimers
THESE PRODUCTS ARE INTENDED FOR SALE TO AND INSTALLATION BY
QUALIFIED PROFESSIONALS. CARRIER
FIRE & SECURITY B.V. CANNOT PROVIDE
ANY ASSURANCE THAT ANY PERSON OR ENTITY BUYING ITS PRODUCTS,
IN
CLUDING ANY “AUTHORIZED DEALER” OR “AUTHORIZED RESELLER”, IS
PROPERLY TRAINED OR EXPERIENCED TO CORRECTLY INSTALL FIRE AND
SECURITY RELATED PRODUCTS.
For more information on warranty disclaimers and product safety
information
, please check https://firesecurityproducts.com/policy/product-warning/
or scan the QR code.
Contact information
and
manuals
EMEA: https://firesecurityproducts.com
Australian/New Zealand: https://firesecurityproducts.com.au/

Product documentation
Please consult the following web link to retrieve the electronic version of the product
documentation.

NS4702-24P-4X-V2 Managed Switch User Manual 1
Content
Important information 3
Chapter 1 Introduction 6
Package contents 6
Product description 7
Product features 15
Product specifications 19
Chapter 2 Installation 22
Hardware description 22
Chapter 3 Switch management 31
Requirements 31
Management access overview 31
Administration console 32
Web management 34
SNMP-based network management 34
Chapter 4 Web configuration 35
Main web page 37
System 38
DHCP server 64
UDLD 75
Open Shortest Path First (OSPF) 78
Simple Network Management Protocol (SNMP) 92
Port management 104
Link OAM 113
Link aggregation 121
VLAN 130
Spanning Tree Protocol (STP) 159
Multicast 177
Quality of Service (QoS) 205
Access Control Lists (ACL) 231
Authentication 247
Security 289
MAC address table 308
LLDP 312
Network diagnostics 326
Loop protection 330
RMON 332
Ring 341
Power over Ethernet (PoE) 354
Port identification 368
LCD 368

2 NS4702-24P-4X-V2 Managed Switch User Manual
Chapter 5 Switch operation 370
Address table 370
Learning 370
Forwarding and filtering 370
Store-and-forward 370
Auto-negotiation 371
Chapter 6 PoE overview 372
What is PoE? 372
PoE system architecture 372
Chapter 7 Troubleshooting 374
Appendix A Networking connection 375
Glossary 377

NS4702-24P-4X-V2 Managed Switch User Manual 3
Important information
Limitation of liability
To the maximum extent permitted by applicable law, in no event will Carrier be liable for
any lost profits or business opportunities, loss of use, business interruption, loss of
data, or any other indirect, special, incidental, or consequential damages under any
theory of liability, whether based in contract, tort, negligence, product liability, or
otherwise. Because some jurisdictions do not allow the exclusion or limitation of liability
for consequential or incidental damages the preceding limitation may not apply to you.
In any event the total liability of Carrier shall not exceed the purchase price of the
product. The foregoing limitation will apply to the maximum extent permitted by
applicable law, regardless of whether Carrier has been advised of the possibility of
such damages and regardless of whether any remedy fails of its essential purpose.
Installation in accordance with this manual, applicable codes, and the instructions of the
authority having jurisdiction is mandatory.
While every precaution has been taken during the preparation of this manual to ensure
the accuracy of its contents, Carrier assumes no responsibility for errors or omissions.
Product warnings
YOU UNDERSTAND THAT A PROPERLY INSTALLED AND MAINTAINED
ALARM/SECURITY SYSTEM MAY ONLY REDUCE THE RISK OF EVENTS SUCH AS
BURGLARY, ROBBERY, FIRE, OR SIMILAR EVENTS WITHOUT WARNING, BUT IT
IS NOT INSURANCE OR A GUARANTEE THAT SUCH EVENTS WILL NOT OCCUR
OR THAT THERE WILL BE NO DEATH, PERSONAL INJURY, AND/OR PROPERTY
DAMAGE AS A RESULT.
THE ABILITY OF CARRIER PRODUCTS, SOFTWARE OR SERVICES TO WORK
PROPERLY DEPENDS ON A NUMBER OF PRODUCTS AND SERVICES MADE
AVAILABLE BY THIRD PARTIES OVER WHICH CARRIER HAS NO CONTROL AND
FOR WHICH CARRIER SHALL NOT BE RESPONSIBLE INCLUDING, BUT NOT
LIMITED TO, INTERNET, CELLULAR AND LANDLINE CONNECTIVITY; MOBILE
DEVICE AND OPERATING SYSTEM COMPATIBILITY; MONITORING SERVICES;
ELECTROMAGNETIC OR OTHER INTERFERENCE, AND PROPER INSTALLATION
AND MAINTENANCE OF AUTHORIZED PRODUCTS (INCLUDING ALARM OR
OTHER CONTROL PANEL AND SENSORS).
ANY PRODUCT, SOFTWARE, SERVICE OR OTHER OFFERING MANUFACTURED,
SOLD OR LICENSED BY CARRIER, MAY BE HACKED, COMPROMISED AND/OR
CIRCUMVENTED AND CARRIER MAKES NO REPRESENTATION, WARRANTY,
COVENANT OR PROMISE THAT ITS PRODUCTS (INCLUDING SECURITY
PRODUCTS), SOFTWARE, SERVICES OR OTHER OFFERINGS WILL NOT BE
HACKED, COMPROMISED AND/OR CIRCUMVENTED.
CARRIER DOES NOT ENCRYPT COMMUNICATIONS BETWEEN ITS ALARM OR
OTHER CONTROL PANELS AND THEIR WIRELESS OUTPUTS/INPUTS INCLUDING

4 NS4702-24P-4X-V2 Managed Switch User Manual
BUT NOT LIMITED TO, SENSORS OR DETECTORS UNLESS REQUIRED BY
APPLICABLE LAW. AS A RESULT THESE COMMUNICATIONS MAY BE
INTERCEPTED AND COULD BE USED TO CIRCUMVENT YOUR ALARM/SECURITY
SYSTEM.
THE EQUIPMENT SHOULD ONLY BE OPERATED WITH AN APPROVED POWER
ADAPTER WITH INSULATED LIVE PINS.
DO NOT CONNECT TO A RECEPTACLE CONTROLLED BY A SWITCH.
THIS UNIT INCLUDES AN ALARM VERIFICATION FEATURE THAT WILL RESULT
IN A DELAY OF THE SYSTEM ALARM SIGNAL FROM THE INDICATED CIRCUITS.
THE TOTAL DELAY (CONTROL UNIT PLUS SMOKE DETECTORS) SHALL NOT
EXCEED 60 SECONDS. NO OTHER SMOKE DETECTOR SHALL BE CONNECTED
TO THESE CIRCUITS UNLESS APPROVED BY THE LOCAL AUTHORITY HAVING
JURISDICTION.
WARNING! The equipment should only be operated with an approved power adapter
with insulated live pins.
Caution: Risk of explosion if battery is replaced by an incorrect type. Dispose of
batteries according to the instructions. Contact your supplier for replacement batteries.
Warranty disclaimers
CARRIER HEREBY DISCLAIMS ALL WARRANTIES AND REPRESENTATIONS,
WHETHER EXPRESS, IMPLIED, STATUTORY OR OTHERWISE, INCLUDING ANY
IMPLIED WARRANTIES, THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE.
(USA only) SOME STATES DO NOT ALLOW THE EXCLUSION OF IMPLIED
WARRANTIES, SO THE ABOVE EXCLUSION MAY NOT APPLY TO YOU. YOU MAY
ALSO HAVE OTHER LEGAL RIGHTS THAT VARY FROM STATE TO STATE.
CARRIER DOES NOT MAKE ANY CLAIMS OR WARRANTIES TO YOU OF ANY
KIND REGARDING ANY PRODUCT, SOFTWARE OR SERVICE’S POTENTIAL,
ABILITY, OR EFFECTIVENESS TO DETECT, MINIMIZE, OR IN ANYWAY PREVENT
DEATH, PERSONAL INJURY, PROPERTY DAMAGE, OR LOSS OF ANY KIND
WHATSOEVER.
CARRIER DOES NOT REPRESENT TO YOU THAT ANY PRODUCT (INCLUDING
SECURITY PRODUCTS), SOFTWARE, SERVICE OR OTHER OFFERING MAY NOT
BE HACKED, COMPROMISED AND/OR CIRCUMVENTED.
CARRIER DOES NOT WARRANT THAT ANY PRODUCT (INCLUDING SECURITY
PRODUCTS), SOFTWARE OR SERVICE MANUFACTURED, SOLD OR LICENSED
BY CARRIER WILL PREVENT, OR IN ALL CASES PROVIDE ADEQUATE WARNING
OF OR PROTECTION FROM, BREAK-INS, BURGLARY, ROBBERY, FIRE, OR
OTHERWISE.

NS4702-24P-4X-V2 Managed Switch User Manual 5
CARRIER DOES NOT WARRANT TO YOU THAT ITS SOFTWARE OR PRODUCTS
WILL WORK PROPERLY IN ALL ENVIRONMENTS AND APPLICATIONS AND DOES
NOT WARRANT ANY PRODUCTS AGAINST HARMFUL ELECTROMAGNETIC
INTERFERENCE INDUCTION OR RADIATION (EMI, RFI, ETC.) EMITTED FROM
EXTERNAL SOURCES
CARRIER DOES NOT PROVIDE MONITORING SERVICES FOR YOUR
ALARM/SECURITY SYSTEM (“MONITORING SERVICES”). IF YOU ELECT TO HAVE
MONITORING SERVICES YOU MUST OBTAIN SUCH SERVICE FROM A THIRD
PARTY AND CARRIER MAKES NO REPRESENTATION OR WARRANTY WITH
RESPECT TO SUCH SERVICES INCLUDING WHETHER OR NOT THEY WILL BE
COMPATIBLE WITH THE PRODUCTS, SOFTWARE OR SERVICES
MANUFACTURED, SOLD OR LICENSED BY CARRIER.
Intended use
Use this product only for the purpose it was designed for; refer to the data sheet and
user documentation. For the latest product information, contact your local supplier or
visit us online at firesecurityproducts.com.
The system should be checked by a qualified technician at least every 3 years and the
backup battery replaced as required.
Advisory messages
Advisory messages alert you to conditions or practices that can cause unwanted
results. The advisory messages used in this document are shown and described below.
WARNING: Warning messages advise you of hazards that could result in injury or loss
of life. They tell you which actions to take or to avoid in order to prevent the injury or
loss of life.
Caution: Caution messages advise you of possible equipment damage. They tell you
which actions to take or to avoid in order to prevent the damage.
Note: Note messages advise you of the possible loss of time or effort. They describe
how to avoid the loss. Notes are also used to point out important information that you
should read.

6 NS4702-24P-4X-V2 Managed Switch User Manual
Chapter 1
Introduction
The IFS NS4702-24P-4X-V2 24-port 10/100/1000Mbps 802.3at PoE + 4-Port 10G
SFP+ managed switch with hardware layer 3 IPv4/IPv6 static routing comes with a
multi-port gigabit ethernet switch, SFP fiber optic connectibility, and robust layer 2
features. The description of this model is as follows:
L2+ 24-port 10/100/1000Mbps 802.3at PoE
+ 4-port 10G shared SFP+
Managed switch with hardware layer 3 IPv4/IPv6 static routing
Unless specified, the term “managed switch” mentioned in this user manual refers to
the NS4702-24P-4X-V2.
Package contents
Open the box of the managed switch and carefully unpack it. The box should contain
the following items:
The managed switch × 1
RJ45 to RS232 cable x 1
Rubber feet x 4
Two rack-mounting brackets with attachment screws x 1
Power cord x 1
SFP dust-proof cap x 4
If any of these are missing or damaged, contact your dealer immediately. If possible,
retain the carton including the original packing materials for repacking the product in
case there is a need to return it to us for repair.
Note: User manuals and install guides are available for download from
https://firesecurityproducts.com.

Chapter 1: Introduction
NS4702-24P-4X-V2 Managed Switch User Manual 7
Product description
PoE+ managed switch with advanced L2+/L4 switching and security
The NS4702-24P-4X-V2 is a cost-optimized, 1.25U, Gigabit PoE+ Managed Switch
with an LCD Touch Screen featuring intelligent PoE functions to improve the availability
of critical business applications. The managed switch provides IPv6/IPv4 dual stack
management and a built-in L2+/L4 Gigabit switching engine along with 24
10/100/1000BASE-T ports featuring 30 W PoEat and four additional 10 gigabit SFP+
ports. With a total power budget of up to 400 W for different kinds of PoE applications,
the managed switch provides a quick, safe, and cost-effective PoE+ network solution
for small businesses and enterprises.
Smart and Intuitive LCD Control
The smart LCD PoE managed switch provides an intuitive touch panel on its front panel
that facilitates the Ethernet PoE PD (powered device) management that greatly
promotes management efficiency in large-scale networks such as enterprises, hotels,
shopping malls, government buildings, and other public areas. They also feature the
following special management and status functions:
• IP address, VLAN and QoS configuration
• PoE management and status
• Port management and status, and SFP information
• Troubleshooting: cable diagnostic and remote IP ping
• Maintenance: reboot, factory default and save configuration

Chapter 1: Introduction
8 NS4702-24P-4X-V2 Managed Switch User Manual
Built-in unique PoE functions for powered devices management
As a managed PoE switch for surveillance, wireless, and VoIP networks, the NS4702-
24P-4X-V2 features the following special PoE management functions:
• PD alive check
• Scheduled power recycling
• PoE schedule
• PoE usage monitoring
Convenient and smart ONVIF devices with detection feature
The managed switch's ONVIF Support is specifically designed to work with video IP
surveillance programs, such as TruVision Navigator, that can display details about
connected ONVIF devices and permit clients to create floor images/maps using the
managed switch, simplifying the deployment of surveillance and other devices for
planning and inspection purposes. IP surveillance program clients can also obtain real-
time surveillance information and online/offline status. PoE reboot control is also
offered at the GUI level.
Intelligent powered device alive check
The managed switch can be configured to monitor connected PD status in real time via
a ping action. After the PD stops working and responding, the managed switch
resumes the PoE port power and puts the PD back to work. The managed switch
greatly enhances the network reliability through the PoE port resetting the PD’s power
source and reducing the administrator management burden.

Chapter 1: Introduction
NS4702-24P-4X-V2 Managed Switch User Manual 9
Scheduled power recycling
The managed switch permits each of the connected PoE IP cameras or PoE wireless
access points to reboot at a specified time each week. This reduces the chance of IP
camera or AP crashes resulting from buffer overflow.
PoE schedule for energy saving
Under the trend of energy saving worldwide and contributing to environmental
protection, the managed switch can effectively control the power supply in addition to
its capability of provideing high Watt power. The “PoE schedule” function helps you to
enable or disable PoE power feeding for each PoE port during specified time intervals,
and is a powerful function to help SMBs or enterprises save power and money. It also
increases security by powering off PDs that should not be in use during non-business
hours.

Chapter 1: Introduction
10 NS4702-24P-4X-V2 Managed Switch User Manual
PoE usage monitoring
Using the power usage chart in the web management interface, the managed switch
allows the administrator to monitor the status of the power usage of the connected PDs
in real time, thus enhancing the management efficiency of the facilities.
Cost-effective 10 Gbps uplink capacity
10G Ethernet is a big leap in the evolution of Ethernet. The four 10G SFP+ slots of the
managed switch support dual-speed 10GBASE-SR/LR or 1000BASE-SX/LX, meaning
the administrator has the flexibility to choose a suitable SFP/SFP+ transceiver
according to the transmission distance or the transmission speed required to extend the
network efficiently. This enables SMB networks to achieve the maximum performance
of 10Gbps in a cost-effective way since the 10GbE interface usually available in a layer
3 switch but layer 3 switch could be too expensive for SMBs.
Environment-friendly, variable fan design for silent operation
The managed switch features a 19-inch metal housing, a low noise design, and an
effective ventilation system. It supports smart fan technology that automatically controls
the speed of the built-in fan to reduce noise and maintain the temperature of the PoE
switch for optimal power output capability. The managed switch operates reliably,
stably, and quietly in any environment without affecting performance.
Solution for IPv6 networking
With the IPv6/IPv4 dual stack and other management functions with user-friendly
interfaces, the managed switch is the best choice for IP surveillance, VoIP, and
wireless service providers to deploy the IPv6 network. More importantly, they help
SMBs upgrade their network infrastructures to the IPv6 era without any monetary
investment.

Chapter 1: Introduction
NS4702-24P-4X-V2 Managed Switch User Manual 11
IPv4/IPv6 VLAN routing for secure and flexible management
To help customers stay on top of their businesses, the managed switch not only
provides ultra high transmission performance and excellent layer 2 technologies, but
also a IPv4/IPv6 VLAN routing feature that allows cross over of different VLANs and
different IP addresses for the purpose of having a highly secured, flexible management
and simpler networking application.
Robust layer 2 feature
The managed switch can be programmed for advanced switch management functions
such as dynamic port link aggregation, Q-in-Q VLAN, Multiple Spanning Tree Protocol
(MSTP), layer 2 to layer 4 QoS, bandwidth control, and IGMP / MLD snooping. The
managed switch allows the operation of a high-speed trunk combining multiple ports. It
consists of a maximum of 14 trunk groups with four ports for each group, and also
supports fail-over.
Powerful security
The managed switch offers a comprehensive layer 2 to layer 4 Access Control List
(ACL) for enforcing security to the edge. It can be used to restrict network access by
denying packets based on source and destination IP address, TCP/UDP ports, or
defined typical network applications. Its protection mechanism also comprises 802.1x

Chapter 1: Introduction
12 NS4702-24P-4X-V2 Managed Switch User Manual
port-based and MAC-based user and device authentication. With the private VLAN
function, communication between edge ports can be prevented to ensure user privacy.
Enhanced security and traffic control
The managed switch also provides DHCP snooping, IP source guard, and dynamic
ARP inspection functions to prevent IP snooping from attack and discard ARP packets
with invalid MAC addresses. The network administrator can now construct highly-
secure corporate networks using considerably less time and effort than before.
User-friendly secure management
For efficient management, the managed switch is equipped with console, web, and
SNMP management interfaces. With the built-in web-based management interface, the
managed switch offers an easy-to-use, platform-independent management and
configuration facility. The managed switch supports standard Simple Network
Management Protocol (SNMP) and can be managed by any management software
based on the standard SNMP v1 or v2 protocol. For reducing product learning time, the
managed switch offers Cisco-like command via Telnet or console port, and the
customer doesn’t need to learn new commands from these switches. Moreover, the
managed switch offers secure management remotely by supporting SSH, SSL, and
SNMP v3 connections where the packet content can be encrypted at each session.
Intelligent SFP diagnostic mechanism
The managed switch series supports a SFP-DDM (Digital Diagnostic Monitor) function
that can easily monitor real-time parameters of the SFP and SFP+ transceivers, such
as optical output power, optical input power, temperature, laser bias current, and
transceiver supply voltage.

Chapter 1: Introduction
NS4702-24P-4X-V2 Managed Switch User Manual 13
Applications
Layer 2+ VLAN static routing application
The managed switch features IEEE 802.3at PoE+ that combines up to 30 W of power
output per port, and a PoE budget of up to 400 W which can deploy up to 24 PoE PD
devices. It also features a built-in, robust IPv4/IPv6 layer 3 traffic static routing protocol
to ensure reliable routing between VLANs and network segments. The routing protocols
can be applied by VLAN interface with up to 32 routing entries.

Chapter 1: Introduction
14 NS4702-24P-4X-V2 Managed Switch User Manual
Multiple Spanning Tree Protocol with PoE IP office solution for SMBs and
workgroups
The managed switch features strong, rapid self-recovery capability to prevent
interruptions and external intrusions. It incorporates Multiple Spanning Tree Protocol
(802.1s MSTP) into the customer’s automation network to enhance system reliability
and uptime. Adopting the IEEE 802.3af/802.3at PoE standard, the managed switch can
directly connect with any IEEE 802.3at PoE end-nodes like PTZ (Pan, Tilt & Zoom)
network cameras and speed dome cameras. The managed switch can easily help
enterprises with the available network infrastructure to build wireless AP, IP camera,
and VoIP systems where power can be centrally controlled.

Chapter 1: Introduction
NS4702-24P-4X-V2 Managed Switch User Manual 15
Product features
Physical port
• 24-port 10/100/1000BASE-T gigabit RJ45 copper ports with 24-port IEEE802.3af/at
PoE+ injector.
• Four 10GBASE-SR/LR SFP+ slots, compatible with 1000BASE-SX/LX/BX SFP.
• RJ45 console interface for basic switch management and setup.
Power over Ethernet
• Complies with IEEE 802.3at Power over Ethernet Plus/end-span PSE.
• Backward compatible with IEEE 802.3af Power over Ethernet.
• Up to 24 ports of IEEE 802.3af/IEEE 802.3at devices powered.
• Supports PoE power up to 30 W for each PoE port.
• Auto detects powered device (PD).
• Circuit protection prevents power interference between ports.
• Remote power feeding up to 100 meters.
• PoE management:
• Total PoE power budget control

Chapter 1: Introduction
16 NS4702-24P-4X-V2 Managed Switch User Manual
• Per port PoE function enable/disable
• PoE admin-mode control
• PoE port power feeding priority
• Per PoE port power limitation
• PD classification detection
• Temperature threshold control
• PD alive check
• PoE schedule
Layer 2 features
• Prevents packet loss with back pressure (half-duplex) and IEEE 802.3x pause
frame flow control (full-duplex).
• High performance of Store-and-Forward architecture and runt/CRC filtering
eliminates erroneous packets to optimize the network bandwidth.
Storm control support:
• Broadcast / Multicast / Unknown-Unicast
Supports VLAN
• IEEE 802.1Q tagged VLAN
• Up to 255 VLANs groups out of 4094 VLAN IDs
• Provider bridging (VLAN Q-in-Q) support (IEEE 802.1ad)
• Private VLAN Edge (PVE)
• Protocol-based VLAN
• MAC-based VLAN
• Voice VLAN
• Management VLAN
Supports STP
• STP, IEEE 802.1D Spanning Tree Protocol
• RSTP, IEEE 802.1w Rapid Spanning Tree Protocol
• MSTP, IEEE 802.1s Multiple Spanning Tree Protocol, spanning tree by VLAN
• BPDU Guard
Supports link aggregation
• IEEE 802.3ad Link Aggregation Control Protocol (LACP)
• Cisco ether-channel (static trunk)
• Maximum 14 trunk groups, up to four ports per trunk group