dhcp-request in llc-layer (logical link control) over different ip-segments

Answered Question
Jun 13th, 2010
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is it possible to initiate a dhcp-request over different ip-segments over the llc-layer? is there a config like ip-helper on cisco devices? dhcp-server and client are in different ip-segments.


see details in the capture-file (wireshark) -- set filter: eth.addr == 08:00:09:F2:2a:61


when dhcp-server an client are in the same ip-segment --> no problem. how can i tell the nw-device, that all boot-request from this ip-segment (rmp-protokol) should be send to the dhcp-server?


thanks in advance for your replies!


kind regards,


thomas

Correct Answer by Hitesh Vinzoda about 6 years 9 months ago

This is what i got from HP resources,


Remote Maintenance Protocol (RMP) is an HP-proprietary boot and file transfer protocol used in early Series 700 workstations and in the Datacommunications and Terminal Controllers (DTC/9000). The rbootd daemon allows BOOTP servers to serve clients that use RMP. rbootd must be run on a BOOTP server on the same subnet as the RMP client. That is, both rbootd and bootpd must run on the same system.

The rbootd daemon translates RMP bootrequests into a BOOTP bootrequest using the client's hardware address. rbootd then forwards the bootrequest to bootpd. bootpd can send a bootreply back to rbootd if it finds the client's boot information in its database. Or, it can relay the bootrequest to other BOOTP servers if it has relay information for the client in its database. rbootd translates the BOOTP bootreply back to RMP and sends it to the client.


Im unable to find any UDP port number associated with RMP, If you have one than it can be forwarded to desired server.


Here is the link for further information


http://docs.hp.com/en/B2355-90685/ch05s03.html?btnNext=next%A0%BB


HTH


Hitesh Vinzoda


Pls rate useful posts.

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Correct Answer
Hitesh Vinzoda Mon, 06/14/2010 - 00:10
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This is what i got from HP resources,


Remote Maintenance Protocol (RMP) is an HP-proprietary boot and file transfer protocol used in early Series 700 workstations and in the Datacommunications and Terminal Controllers (DTC/9000). The rbootd daemon allows BOOTP servers to serve clients that use RMP. rbootd must be run on a BOOTP server on the same subnet as the RMP client. That is, both rbootd and bootpd must run on the same system.

The rbootd daemon translates RMP bootrequests into a BOOTP bootrequest using the client's hardware address. rbootd then forwards the bootrequest to bootpd. bootpd can send a bootreply back to rbootd if it finds the client's boot information in its database. Or, it can relay the bootrequest to other BOOTP servers if it has relay information for the client in its database. rbootd translates the BOOTP bootreply back to RMP and sends it to the client.


Im unable to find any UDP port number associated with RMP, If you have one than it can be forwarded to desired server.


Here is the link for further information


http://docs.hp.com/en/B2355-90685/ch05s03.html?btnNext=next%A0%BB


HTH


Hitesh Vinzoda


Pls rate useful posts.

thomas.luxl Mon, 06/14/2010 - 01:56
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hi hitesh,


thanks for your posting! that is the answer what i´m looking for.


kind regards,


thomas

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