Routing question (dead gateways)

  • From: "Frederic Giroux" <fgiroux@xxxxxxxxxxxxxx>
  • To: "ISA Mailing list (E-mail)" <isalist@xxxxxxxxxxxxx>
  • Date: Tue, 28 Oct 2003 13:37:21 -0500

Good day!

        I have a problem not per say related to ISA but, since it is routing 
related, I feel this is a good place to ask.

        On my LAN, I have two subnets separated by two routers.  One is ISA and 
it is also the GW to the Internet and the other is hardware and is the primary 
router between the LANs

        On the workstations, I have a default gateway pointing to ISA and two 
GW for the other LAN (one being ISA and the other the hardware router).

        The routing table looks like this:

        ISA:  192.168.23.254     Hardware router:  192.168.23.253


  Network address    Subnet Mask     Gateway            Interface      Metric
          0.0.0.0          0.0.0.0   192.168.23.254  192.168.23.100       1
        127.0.0.0        255.0.0.0        127.0.0.1       127.0.0.1       1
     192.168.23.0    255.255.255.0   192.168.23.100  192.168.23.100       1
   192.168.23.100  255.255.255.255        127.0.0.1       127.0.0.1       1
   192.168.23.255  255.255.255.255   192.168.23.100  192.168.23.100       1
     192.168.24.0    255.255.255.0   192.168.23.253  192.168.23.100       1
     192.168.24.0    255.255.255.0   192.168.23.254  192.168.23.100       2
        224.0.0.0        224.0.0.0   192.168.23.100  192.168.23.100       1
  255.255.255.255  255.255.255.255   192.168.23.100  192.168.23.100       1
Default gateway:    192.168.23.254
===========================================================================
Persistent routes:
  Network address    Subnet Mask     Gateway            Metric
     192.168.24.0    255.255.255.0   192.168.23.253       1
     192.168.24.0    255.255.255.0   192.168.23.254       2



        My problem is that the workstations do not detect if one of the GW is 
down.  The following parameters are properly set in the registry under 
HKLM\system\CurrentControlSet\Services\TCPIP\parameters :

        - EnableDeadGWDetect = 1
        - DeadGWDetectDefault = 1


        Thanks for any help :-)

        Fred

______________________________ 
Frederic Giroux
LAN Administrator
CyberCap
 
fgiroux@xxxxxxxxxxxxxx 
http://www.cybercap.qc.ca 
 
33 Prince St.
Suite 301
Montreal, Qc
H3C 2M7
 
(514) 861-7700 ext. 303
Fax : (514) 861-7700


        


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