Cisco ESW 500 - Defining the Bonjour Discovery Protocol

Managing Device Information
Defining the Bonjour Discovery Protocol
ESW 500 Series Switches Administration Guide 57
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• Advertisement Version — Indicates the CDP version advertised by the
neighboring device.
• Native VLAN — Defines the ID number of the VLAN on the neighbor device.
• Duplex — Displays the duplex state of connection between the current device
and the neighbor device. The possible field values are:
- Full — Indicates that the interface supports transmission between the
device and the client in both directions simultaneously.
- Half — Indicates that the interface supports transmission between the
device and the client in only one direction at a time.
• IP Address — Indicates the IP address advertised by the neighboring device.
• Platform — Indicates the product name and number of the neighboring device.
• Capabilities — Indicates the device type of the neighbor. This device can be a
router, a bridge, a transparent bridge, a source-routing bridge, a switch, a host,
an IGMP device, or a repeater.
• Interface — Indicates the protocol and port number of the port on the current
device.
• Port ID (outgoing port) — Indicates the neighboring device’s port from which
the CDP packet was sent.
• Time to Live — Indicates the amount of time in seconds before the neighboring
device CDP information is aged out. The field default is 180 seconds.
• Version — Indicates the software version of the neighboring device.
Defining the Bonjour Discovery Protocol
Bonjour is a service discovery protocol that enables automatic discovery of
computers, devices, and services on IP networks. Bonjour’s multicast Domain
Name System (mDNS) service allows the device to publish device services by
sending and receiving UDP packets only to the following multicast address
224.0.0.251 and to port number 5353.