Remote Install Services and Cisco 3524XL

- S
- Shane.Shelton
  
  Contact options for registered users
posted
17 years ago

Thu, Jun 29, 2006 4:26 PM

We have several floors at our headquarters and we are currently trying to RIS image desktop on 8 from a server that is on 10. The problem is, the desktop are not getting a DHCP address from the RIS server on 10. The floors are connected via fiber cable going through Cisco 3524XL's. Can someone please give me the command(s) on how to open port 4011 and forward broadcast traffic to the client computer from the RIS server so they can receive an address? Thanks in advance.

- B
- Brian V
  
  Contact options for registered users
Vote on answer
posted
17 years ago

Fri, Jun 30, 2006 1:20 AM

the 3524's are layer 2 devices and have nothing to do with ports. Perhaps you could explain your topology (ie core switch) and we can find an answer for you.

- B
- BernieM
  
  Contact options for registered users
Vote on answer
posted
17 years ago

Sat, Jul 1, 2006 8:07 AM

As Brian said ... the 3524's are a simple layer-2 switch and are unaware of udp ports. They would be forwarding the broadcasts.

Is there a layer-3 switch (router) between floors 8 and 10? To have those broadcasts forwarded by a router (assuming it's a Cisco) you need to add the RIS as an 'ip helper-address" on the (vlan) Ethernet interfacing the clients and add the specif udp port to be forwarded. The rouyer will convert the broadcasts to unicast and send to the IP helper-address. eg. ..

int vlan 8 ip helper-address ip forward-protocol 4011

By default 8 other protocols also get forwarded ...

Trivial File Transfer Protocol (TFTP) (port 69) .Domain Naming System (port 53) .Time service (port 37) .NetBIOS Name Server (port 137) .NetBIOS Datagram Server (port 138) .Boot Protocol (BOOTP) client and server datagrams (ports 67 and 68) .TACACS service (port 49) .IEN-116 Name Service (port 42)

Turn off those you don't want to forward eg...

no ip forward-protol 37

BernieM