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Posted by BernieM on July 1, 2006, 4:07 am
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> 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.
>
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 <RIS server>
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
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