Home > Wireless LAN > Client Addressing and Bridging > Wireless support of NetBIOS name resolution

Wireless support of NetBIOS name resolution

Table of contents
No headers

A NetBIOS name is a unique identifier that identifies resources on a network running NetBIOS over TCP/IP. This identifier is often the same as the computer or resource host name. NetBIOS is a Layer 2 protocol and therefore cannot traverse Layer 3 boundaries such as a NAT or VPN interface. Therefore, NetBIOS name resolution is not possible when a Cisco Meraki AP is operating in NAT mode but is possible when operating in Bridge mode.

NAT mode

Wireless clients will not be able to resolve NetBIOS names. NetBIOS name resolution is unsupported in NAT mode for the following reasons:

  1. Meraki APs provide DNS name resolution for wireless clients. Meraki APs can only resolve Fully Qualified Domain Names (e.g. myhost.mydomain.com) but not NetBIOS names (e.g. myhost).
  2. Wireless clients cannot communicate with each other in NAT mode, therefore NetBIOS broadcast based discovery is not possible.
  3. Meraki APs, which provide DHCP to wireless clients do not support the distribution of DHCP option 44 WINS-Name Server.
  4. Layer-2 based discover protocols such as NetBIOS are unable to pass through the Meraki NAT.

Bridge mode

Wireless clients will be able to resolve NetBIOS names. NetBIOS name resolution is supported in bridge mode for the following reasons:
  1. Wireless clients are bridged onto the LAN at layer 2 and host to host communication is unrestricted. This allows for NetBIOS broadcast based discovery.
  2. Wireless clients receive DHCP from the LAN, therefore the DHCP server can be configured to distribute DHCP option 44 WINS-Name Server IP address to wireless clients.
You must to post a comment.
Last modified
10:05, 3 Feb 2015

Tags

This page has no custom tags.

Classifications

This page has no classifications.

Article ID

ID: 2049

Contact Support

Most questions can be answered by reviewing our documentation, but if you need more help, Cisco Meraki Support is ready to work with you.

Open a Case

Ask the Community

In the Meraki Community, you can find answers provided by fellow Meraki users and ask questions of your own.

Visit the Community