Device Management
Device Discovery Protocols
Cisco ISA500 Series Integrated Security Appliances Administration Guide
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Per Port:
Configure CDP on selective ports. CDP per port is
recommended.
•
CDP Timer:
Enter the value of the time interval between two successive
CDP packets sent by the security appliance. The default value is 60
seconds.
•
CDP Hold Timer:
The hold timer is the amount of time the information sent
in the CDP packet should be cached by the security appliance that receives
the CDP packet, after which the information is expired. The default value is
180 seconds.
Note:
The Voice VLAN ID is a read-only field. You can configure the Voice VLAN on
the Networking > VLAN page. For more information, see
.
STEP 3
In the
Enable CDP
area, specify which interfaces will run CDP. Click
On
to enable
CDP on an interface, or click
Off
to disable CDP. This is required if you choose
Per
Port
from the
CDP
drop-down list.
STEP 4
Click
Save
to apply your settings.
LLDP Discovery
Link Layer Discovery Protocol (LLDP) enables network managers to troubleshoot
and enhance network management by discovering and maintaining network
topologies over multi-vendor environments. LLDP discovers network neighbors by
standardizing 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 store the data in a Management
Information Base (MIB). The network management system models the topology of
the network by querying these MIB databases.
STEP 1
Click
Device Management > Discovery Protocols > LLDP
.
STEP 2
Click
On
to enable LLDP, or click
Off
to disable it. If you enable LLDP, the LLDP
neighbors appear in the LLDP Neighbors table.
STEP 3
To view the detail of a LLDP neighbor, check it and click
Details
.
STEP 4
To refresh the data in the LLDP Neighbors table, click
Refresh
.
