IP Routing does NOT work
- From: "Nigel Carroll" <nigel@xxxxxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 4 Jan 2002 20:48:03 +0800
My ISP assigned me 1 IP# (my ISA server uses this) with mask
255.255.255.252 and a gateway in the same subnet (call it subnet1). Note
that the 252 mask means there are only 2 useable IP#s in this subnet,
mine and the gateway's.
They also gave me another subnet with a mask of 255.255.255.248 (call it
subnet2)which gives 6 useable IPs.
My problem is that I now want to use 1 of these other 6 IPs so this is
what I did:
1) Assigned a 2nd IP to my ISA server from subnet2 so now ISA's
multihomed.
2) Assigned an IP from subnet2 to new PC.
3) Enabled IP Routing on ISA.
But no matter what I do when I ping the GW from the new PC it doesn't
get a reply.
Checking ISAs Packet Filter Logs & netmon packet captures show that the
GW IS receiving the pings AND correctly replying to the new PCs IP# BUT
is using the MAC address of my ISA server.
If I've enabled IP routing in ISA shouldn't it forward these packets
onto my new PC?
(Note ISA, GW and new PC are all plugged into same hub and new PC can
ping ISA ok)
I've spent a whole day on this without success so would really
appreciate input\ideas from anyone.
Regards
Nigel
TechBase
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