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Configuring LLDP, Configuring Discovery, LLDP Overview, Setting LLDP Properties

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Configuring Discovery Configuring LLDP 8 • Auto Smartport requires CDP and/or LLDP to be enabled. Auto Smartport automatically configures an interface based on the CDP/LLDP advertisement received from the interface. • CDP and LLDP end devices, such as IP phones, learn the voice VLAN configuration from CDP and LLDP advertisements. By default, the switch is enabled to send out CDP and LLDP advertisement based on the voice VLAN configured at the switch. Refer to the Voice VLAN and Auto Voice VLAN sections for details. NOTE CDP/LLDP does not distinguish if a port is in a LAG. If there are multiple ports in a LAG, CDP/LLDP transmit packets on each port without taking into account the fact that the ports are in a LAG. The operation of CDP/LLDP is independent of the STP status of an interface. If 802.1x port access control is enabled at an interface, the switch transmits and receives CDP/LLDP packets to and from the interface only if the interface is authenticated and authorized. If a port is the target of mirroring, then according to CDP/LLDP it is considered down. NOTE CDP and LLDP are link layer protocols for directly-connected CDP/LLDP capable devices to advertise themselves and their capabilities. In deployments where the CDP/LLDP-capable devices are not directly connected and are separated with CDP/LLDP-incapable devices, the CDP/LLDP-capable devices may be able to receive the advertisement from other device(s) only if the CDP/LLDP-incapable devices flood the CDP/LLDP packets they receives. If the CDP/LLDP-incapable devices perform VLAN-aware flooding, then CDP/LLDP-capable devices can hear each other only if they are in the same VLAN. A CDP/LLDP-capable device may receive advertisement from more than one device if the CDP/LLDP-incapable devices flood the CDP/LLDP packets. Configuring LLDP This section describes how to configure LLDP. It covers the following topics: • LLDP Overview • Setting LLDP Properties • Editing LLDP Port Settings • LLDP MED Cisco Small Business 200 Series Smart Switch Administration Guide 71

Section	Page
Getting Started	7
Starting the Web-based Switch Configuration Utility	7
Quick Start Switch Configuration	11
Interface Naming Conventions	11
Window Navigation	13
Viewing Statistics	17
Viewing Ethernet Interfaces	17
Viewing Etherlike Statistics	18
Viewing 802.1X EAP Statistics	19
Managing RMON	21
Managing System Logs	24
Setting System Log Settings	24
Setting Remote Logging Settings	26
Viewing Memory Logs	27
Managing System Files	29
Types of System Files	29
Upgrade/Backup Firmware/Language	32
Downloading or Backing-up a Configuration or Log	34
Viewing Configuration Files Properties	37
Copying Configuration Files	38
DHCP Auto Configuration	39
General Administrative Information	43
Switch Models	43
System Information	45
Rebooting the Switch	47
Monitoring the Fan Status and Temperature	48
Defining Idle Session Timeout	48
Pinging a Host	49
System Time	51
System Time Options	52
SNTP Modes	53
Configuring System Time	54
Managing Device Diagnostics	61
Testing Copper Ports	61
Displaying Optical Module Status	63
Configuring Port and VLAN Mirroring	64
Viewing CPU Utilization and Secure Core Technology	66
Configuring Discovery	68
Configuring Bonjour Discovery	68
LLDP and CDP	69
Configuring LLDP	70
Configuring CDP	91
Port Management	100
Configuring Ports	100
Setting Basic Port Configuration	101
Configuring Link Aggregation	103
Configuring Green Ethernet	111
Smartports	118
Overview	118
What is a Smartport	119
Smartport Types	119
Smartport Macros	122
Macro Failure and the Reset Operation	123
How the Smartport Feature Works	124
Auto Smartport	124
Error Handling	128
Default Configuration	128
Relationships with Other Features and Backwards Compatibility	129
Common Smartport Tasks	129
Configuring Smartport Using The Web-based Interface	131
Built-in Smartport Macros	136
Managing Power-over-Ethernet Devices	148
PoE on the Switch	148
Configuring PoE Properties	151
Configuring the PoE Power, Priority, and Class	152
VLAN Management	155
VLANs	155
Configuring Default VLAN Settings	158
Creating VLANs	159
Configuring VLAN Interface Settings	160
Defining VLAN Membership	161
Voice VLAN	165
Configuring the Spanning Tree Protocol	179
STP Flavors	179
Configuring STP Status and Global Settings	180
Defining Spanning Tree Interface Settings	182
Configuring Rapid Spanning Tree Settings	184
Managing MAC Address Tables	187
Configuring Static MAC Addresses	188
Managing Dynamic MAC Addresses	188
Configuring Multicast Forwarding	190
Multicast Forwarding	190
Defining Multicast Properties	193
Adding MAC Group Address	195
Adding IP Multicast Group Addresses	197
Configuring IGMP Snooping	198
MLD Snooping	200
Querying IGMP/MLD IP Multicast Group	203
Defining Multicast Router Ports	204
Defining Forward All Multicast	205
Defining Unregistered Multicast Settings	206
Configuring IP Information	207
Management and IP Interfaces	207
Configuring ARP	219
Domain Name Systems	220
Configuring Security	224
Defining Users	225
Configuring RADIUS	228
Configuring Management Access Authentication	230
Defining Management Access Method	231
Configuring TCP/UDP Services	236
Defining Storm Control	237
Configuring Port Security	238
Configuring 802.1X	241
Denial of Service Prevention	247
Using the SSL Feature	249
SSL Overview	249
Default Settings and Configuration	249
SSL Server Authentication Settings	250
Secure Sensitive Data	252
Introduction	252
SSD Rules	253
SSD Properties	258
Configuration Files	261
SSD Management Channels	266
Menu CLI and Password Recovery	266
Configuring SSD	267
Configuring Quality of Service	270
QoS Features and Components	271
Configuring QoS - General	272

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Configuring Discovery

Configuring LLDP

Cisco Small Business 200 Series Smart Switch Administration Guide

•

Auto Smartport requires CDP and/or LLDP to be enabled. Auto Smartport

automatically configures an interface based on the CDP/LLDP

advertisement received from the interface.

•

CDP and LLDP end devices, such as IP phones, learn the voice VLAN

configuration from CDP and LLDP advertisements. By default, the switch is

enabled to send out CDP and LLDP advertisement based on the voice

VLAN configured at the switch. Refer to the Voice VLAN and Auto Voice

VLAN sections for details.

NOTE

CDP/LLDP does not distinguish if a port is in a LAG. If there are multiple ports in a

LAG, CDP/LLDP transmit packets on each port without taking into account the fact

that the ports are in a LAG.

The operation of CDP/LLDP is independent of the STP status of an interface.

If 802.1x port access control is enabled at an interface, the switch transmits and

receives CDP/LLDP packets to and from the interface only if the interface is

authenticated and authorized.

If a port is the target of mirroring, then according to CDP/LLDP it is considered

down.

NOTE

CDP and LLDP are link layer protocols for directly-connected CDP/LLDP capable

devices to advertise themselves and their capabilities. In deployments where the

CDP/LLDP-capable devices are not directly connected and are separated with

CDP/LLDP-incapable devices, the CDP/LLDP-capable devices may be able to

receive the advertisement from other device(s) only if the CDP/LLDP-incapable

devices flood the CDP/LLDP packets they receives. If the CDP/LLDP-incapable

devices perform VLAN-aware flooding, then CDP/LLDP-capable devices can hear

each other only if they are in the same VLAN. A CDP/LLDP-capable device may

receive advertisement from more than one device if the CDP/LLDP-incapable

devices flood the CDP/LLDP packets.

Configuring LLDP

This section describes how to configure LLDP. It covers the following topics:

•

LLDP Overview

•

Setting LLDP Properties

•

Editing LLDP Port Settings

•

LLDP MED