Cisco Cisco SG500-52PP 52-port Gigabit Max PoE+ Stackable Managed Switch 维护手册
Administration: Discovery
Configuring LLDP
Cisco 500 Series Stackable Managed Switch Administration Guide
148
9
•
•
•
LLDP Overview
LLDP is a protocol that enables network managers to troubleshoot and enhance
network management in multi-vendor environments. LLDP standardizes methods
for network devices to advertise themselves to other systems, and to store
discovered information.
network management in multi-vendor environments. LLDP standardizes methods
for network devices to advertise themselves to other systems, and to store
discovered information.
LLDP enables a device to advertise its identification, configuration, and
capabilities to neighboring devices that then store the data in a Management
Information Base (MIB). The network management system models the topology of
the network by querying these MIB databases.
capabilities to neighboring devices that then store the data in a Management
Information Base (MIB). The network management system models the topology of
the network by querying these MIB databases.
LLDP is a link layer protocol. By default, the device terminates and processes all
incoming LLDP packets as required by the protocol.
incoming LLDP packets as required by the protocol.
The LLDP protocol has an extension called LLDP Media Endpoint Discovery
(LLDP-MED) that provides and accepts information from media endpoint devices
such as VoIP phones and video phones. For further information about LLDP-MED,
see
(LLDP-MED) that provides and accepts information from media endpoint devices
such as VoIP phones and video phones. For further information about LLDP-MED,
see
LLDP Configuration Workflow
Following are examples of actions that can be performed with the LLDP feature
and in a suggested order. You can refer to the LLDP/CDP section for additional
guidelines on LLDP configuration. LLDP configuration pages are accessible under
the Administration > Discovery LLDP menu.
and in a suggested order. You can refer to the LLDP/CDP section for additional
guidelines on LLDP configuration. LLDP configuration pages are accessible under
the Administration > Discovery LLDP menu.
1. Enter LLDP global parameters, such as the time interval for sending LLDP
updates using the LLDP Properties page.
2. Configure LLDP per port by using the Port Settings page. On this page,
interfaces can be configured to receive/transmit LLDP PDUs, send SNMP
notifications, specify which TLVs to advertise, and advertise the device's
management address.
notifications, specify which TLVs to advertise, and advertise the device's
management address.
3. Create LLDP MED network policies by using the LLDP MED Network Policy
page.
4. Associate LLDP MED network policies and the optional LLDP-MED TLVs to the
desired interfaces by using the LLDP MED Port Settings page.