Administration: Discovery
LLDP and CDP
128 Cisco 350, 350X and 550X Series Managed Switches, Firmware Release 2.4, ver 0.4
9
If Bonjour is disabled, the device stops sending Bonjour Discovery advertisements and stops
listening for Bonjour Discovery advertisements sent by other devices.
To configure Bonjour:
STEP 1 Click Administration > Discovery - Bonjour.
STEP 2 Select Enable to enable Bonjour Discovery globally.
STEP 3 To enable Bonjour on a specific interface, click Add.
STEP 4 Select the interface. If the interface has an IP address assigned to it, the address is displayed.
STEP 5 Click Apply to update the Running Configuration file.
NOTE Click Delete to disable Bonjour on an interface (this performs the delete operation without any
additional operation, such as Apply).
LLDP and CDP
LLDP (Link Layer Discovery Protocol) and CDP (Cisco Discovery Protocol) are link layer
protocols for directly-connected LLDP and CDP-capable neighbors to advertise themselves
and their capabilities. By default, the device sends an LLDP/CDP advertisement periodically
to all its interfaces and processes incoming LLDP and CDP packets as required by the
protocols. In LLDP and CDP, advertisements are encoded as TLV (Type, Length, Value) in the
packet.
The following CDP/LLDP configuration notes apply:
• CDP/LLDP can be enabled or disabled globally or per port. The CDP/LLDP capability
of a port is relevant only if CDP/LLDP is globally enabled.
• If CDP/LLDP is globally enabled, the device filters out incoming CDP/LLDP packets
from ports that are CDP/LLDP-disabled.
• If CDP/LLDP is globally disabled, the device can be configured to discard, VLAN-
aware flooding, or VLAN-unaware flooding of all incoming CDP/LLDP packets.
VLAN-aware flooding floods an incoming CDP/LLDP packet to the VLAN where the
packet is received excluding the ingress port. VLAN-unaware flooding floods an
incoming CDP/LLDP packet to all the ports excluding the ingress port. The default is
to discard CDP/LLDP packets when CDP/LLDP is globally disabled. You can
configure the discard/flooding of incoming CDP and LLDP packets from the CDP
Properties page and the LLDP Properties page, respectively.
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