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Bobby,<br />
I do have the ip helper-address command listed for several of my internal VLANs. As I understand it, that points machines to the ip address of a DHCP server on another subnet or VLAN. If I remove the &quot;ip forward-protocol udp netbios-ss&quot; command, will that screw up the ability to retrieve DHCP for those VLANs or merely stop these 'netbios' broadcasts?<br />
Thanks.
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Bobby,
I do have the ip helper-address command listed for several of my internal VLANs. As I understand it, that points machines to the ip address of a DHCP server on another subnet or VLAN. If I remove the "ip forward-protocol udp netbios-ss" command, will that screw up the ability to retrieve DHCP for those VLANs or merely stop these 'netbios' broadcasts?
Thanks.

<div>
Hi,<br />
<br />
removing netbios-ss forwarding will only stop the forwarding of NetBIOS broadcasts. It will not affect DHCP.<br />
<br />
HTH,<br />
<br />
Bobby<br />

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Hi,

removing netbios-ss forwarding will only stop the forwarding of NetBIOS broadcasts. It will not affect DHCP.

HTH,

Bobby


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<div class="content wysiwyg-content">
I have this command listed on the configuration of our Cisco 4507R layer 3 switch.<br />
&quot;ip forward-protocol udp netbios-ss&quot;<br />
What exactly does this do?
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I have this command listed on the configuration of our Cisco 4507R layer 3 switch.
"ip forward-protocol udp netbios-ss"
What exactly does this do?

What is &quot;ip forward-protocol udp netbios-ss&quot;

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.

Routers

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

A switch is a device that filters and forwards packets of data between LAN segments. Switches operate at the data link layer or the network layer of the Open Systems Interconnection (OSI) Reference Model and therefore support any packet protocol. LANs that use switches to join segments are called switched LANs or, in the case of Ethernet networks, switched Ethernet LANs. A hub is a connection point for devices in a network. Hubs are commonly used to connect segments of a LAN. A hub contains multiple ports; when a packet arrives at one port, it is copied to the other ports so that all segments of the LAN can see all packets.

What is &quot;ip forward-protocol udp netbios-ss&quot;

What is "ip forward-protocol udp netbios-ss"