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Conference turris::digital_unix

Title:DIGITAL UNIX(FORMERLY KNOWN AS DEC OSF/1)
Notice:Welcome to the Digital UNIX Conference
Moderator:SMURF::DENHAM
Created:Thu Mar 16 1995
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:10068
Total number of notes:35879

8544.0. "DHCP config problem" by VAXRIO::MIRIAM (Unix Group - CSC/Brazil) Wed Jan 22 1997 13:09

T.RTitleUserPersonal
Name
DateLines
8544.1CSC32::B_GRUBBSWed Jan 22 1997 13:4914
8544.2man joindNETRIX::"[email protected]"Brian HaleyWed Jan 22 1997 14:4210
8544.3DHCP in a multi network environmentVAXRIO::MIRIAMUnix Group - CSC/BrazilThu Jan 23 1997 12:5021
8544.4should be possibleNETRIX::"[email protected]"Farrell WoodsFri Jan 24 1997 10:5814
> I'm assuming I can receive a DHCP request without a bootp request.

DHCP is a superset of bootp.  joind can be configured to deal with either
DHCP,
BOOTP, or both.  The old bootpd program can only handle bootp.

joind can support multiple IP subnets as long as each subnet has its own
interface.  If the DHCP server has one network interface for 128.1 and
another for 128.2 then it will work.


	-- Farrell

[Posted by WWW Notes gateway]
8544.5One more question...VAXRIO::MIRIAMUnix Group - CSC/BrazilTue Jan 28 1997 14:3029
    
     Still talking about multiple IP subnets, the customer has two
    different networks connected by a router.  He is planning to have two
    DHCP servers, one in each network as shown bellow.
                                      
          DHCP 
         server            
           |                          
       ----+-------------------------+-------------------- 128.1
                                     |
                                   Router
                                     /
                                     /   
                                   Router
                                     |                    
       ----+-------------------------+-------------------- 128.2
           |
          DHCP 
         server            
                                                         
      Is it possible that DHCP server located in 128.2 provides a address
    for a client located in 128.1?  Note that we don't want it to happen
    the customer is affraid that this can happen by mistake or because the
    local server is down.
    
      Thank you for the help,
    
          Miriam
    
8544.6define the ranges, don't overlap themSMURF::DUSTINWed Jan 29 1997 16:447
    You define ranges of IP addresses served, so as long as you
    define one server to hand out addresses in the 128.1 subnet
    range and the other server to hand out 128.2 subnets, you
    should be all set.
    
    John
    
8544.7VAXRIO::MIRIAMUnix Group - CSC/BrazilFri Jan 31 1997 06:5314
    
     John,
    
      I think I didn't make myself clear.
      Suppose that the environment is defined with two DHCP servers, each
     one in each local network. The addresses were separated in two ranges
     each one managed by each server. 
      What will happen if a client on "physical network 128.1" ask for an 
     address and the DHCP server of network 128.1 is down?  The client will
     be served by the server of network 128.2 or he won't get any address?
    
      Thanks,
    
        Miriam
8544.8should work okSMURF::DUSTINMon Feb 03 1997 16:449
    He won't get any address since there is only 1 server in "his"
    subnet, and that one is down.  His request would have to be
    forwarded across a gateway to the other network, which would be
    treated differently there; it would not be a local address request,
    it would be a remote request, for the other subnet not served by
    that DHCP daemon.  So no address would be assigned.
    
    John
    
8544.9ThanksVAXRIO::MIRIAMUnix Group - CSC/BrazilTue Feb 04 1997 06:342
    
    Thank you ...