[SUMMARY] Problems with implementation of DHCP not supplying router

David Foster foster at dim.ucsd.edu
Thu Nov 29 16:12:51 EST 2001


Problem: DHCP on Solaris 8 doesn't supply a default router to clients.

This appears to be a bug in one of the later DHCP patches. One
person had DHCP working fine, applied the recommended patches,
and then had this same problem. It has been verified that the clients 
are requesting the default router, using snoop.

One case has been filed, I will file another and hopefully get this
escalated. 

My concern about having multiple networks was misguided; since the
two networks are each running over their own NIC, this shouldn't be
a problem.

ISC's DHCP software ( http://isc.org ) was recommended by several people.
It doesn't have a nice GUI configuration utility, but they claim it
has a superior design (and can support multiple networks over one
interface, BTW).

Thanks to:

Darren Dunham
Bara Zani
John Simon
Casper Dik


> 
> I have setup a DHCP server using 'dhcpmgr' utility, under Solaris 8
> with all recommended patches applied.
> 
> The clients do not get supplied a default router, even though one
> is specified (see dhcptab file below). Also, it appears the addresses
> are not reclaimed when they should be. In dhcpmgr it lists the lease
> expiration times, all yesterday, yet the addresses are still claimed.
> I have specified a lease policy of "Dynamic".
> 
> I notice in the docs that it says "You can use DHCP on one of the
> networks, but not more than one", referring to multiple IP networks
> on the same network hardware.
> 
> In fact my server is also our SunRay server, with its own private
> network of SunRay clients off its own Quad Ethernet NIC, and the DHCP 
> server is serving this network already, as well as our local network.
> 
> Is this the source of my problem? Should I setup a separate DHCP
> server for our LAN?
> 
> Thanks!
> 
> Dave Foster
> 
> 
> Contents of /var/dhcp/dhcptab:
> 
> SunRay  m       :LeaseTim=86400:LeaseNeg:
> AuthSrvr        s       Vendor=SUNW.NewT.SUNW,21,IP,1,1
> AuthPort        s       Vendor=SUNW.NewT.SUNW,22,NUMBER,2,1
> NewTVer s       Vendor=SUNW.NewT.SUNW,23,ASCII,1,0
> LogHost s       Vendor=SUNW.NewT.SUNW,24,IP,1,1
> LogKern s       Vendor=SUNW.NewT.SUNW,25,NUMBER,1,1
> LogNet  s       Vendor=SUNW.NewT.SUNW,26,NUMBER,1,1
> LogUSB  s       Vendor=SUNW.NewT.SUNW,27,NUMBER,1,1
> LogVid  s       Vendor=SUNW.NewT.SUNW,28,NUMBER,1,1
> LogAppl s       Vendor=SUNW.NewT.SUNW,29,NUMBER,1,1
> FWSrvr  s       Vendor=SUNW.NewT.SUNW,31,IP,1,1
> Intf    s       Vendor=SUNW.NewT.SUNW,33,ASCII,1,0
> SunRay-qfe0     m       
> 
:Include=SunRay:AuthSrvr=192.168.128.1:AuthPort=7009:LogHost=192.168.128.1:LogKe
> rn=6:LogNet=6:LogUSB=6:LogVid=6:LogAppl=6:
> 192.168.128.0   m       
> 
:Broadcst=192.168.128.255:Subnet=255.255.255.0:MTU=1500:Router=192.168.128.1:FWS
> rvr=192.168.128.1:Intf=qfe0:NewTVer=1.2_16.a,REV=2000.10.31.16.19:
> 132.239.16.0    m       
> 
:Subnet=255.255.255.128:Router=132.239.16.62:Broadcst=132.239.16.127:NISdmain="s
> dmir":NISservs=132.239.16.23 132.239.16.68 132.239.16.3:
> 
> 
> 
>    << All opinions expressed are mine, not the University's >>
> 
>   =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
>    David Foster    National Center for Microscopy and Imaging Research
>     Programmer/Analyst     University of California, San Diego
>     dfoster at ucsd.edu       Department of Neuroscience, Mail 0608
>     (858) 534-7968         http://ncmir.ucsd.edu/
>   =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
> 
>    "The reasonable man adapts himself to the world; the unreasonable one
>    persists in trying to adapt the world to himself.  Therefore, all progress
>    depends on the unreasonable."   -- George Bernard Shaw
> _______________________________________________
> sunmanagers mailing list
> sunmanagers at sunmanagers.org
> http://www.sunmanagers.org/mailman/listinfo/sunmanagers


   << All opinions expressed are mine, not the University's >>

  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
   David Foster    National Center for Microscopy and Imaging Research
    Programmer/Analyst     University of California, San Diego
    dfoster at ucsd.edu       Department of Neuroscience, Mail 0608
    (858) 534-7968         http://ncmir.ucsd.edu/
  =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

   "The reasonable man adapts himself to the world; the unreasonable one
   persists in trying to adapt the world to himself.  Therefore, all progress
   depends on the unreasonable."   -- George Bernard Shaw
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