There is a router/modem connecting to the ISP using PPoA. This router was in
place and works...the customer just wanted some packet filtering as well (
which the router in place does not provide ). So I am using a Cisco SOHO 71.
E1 is the outside interface which connects to the inside interface of the
existing router. E1 has a static ip of 172.16.0.2 ( there is no "ip address
dhcp" it is "ip address 172.16.0.2 255.255.255.0"
E0 has "ip address 192.168.0.9 255.255.255.0"
There is a static route on the existing ( non Cisco ) router pointing all
192.168.0.0/24 destined traffic back to 172.16.0.2 ( E1 of Cisco ). There is
also a default route on the cisco pointing to 172.16.0.1 ( the inside
interface of the non-cisco router )
The non-cisco router does NAT
INTERNET---------WANinterface(non-Cisco Router)172.16.0.1(inside)
|
|
Win2000Server(DHCP)--|------192.168.0.9(E0)(Cisco SOHO71)172.16.0.2(E1)
|
|
LAN
Every few days ( there doesn't seem to be an exact regularity yet),
interface E0's ip address will change. So far it has always changed to
192.168.0.16. If I view the DHCP Manager in Windows 2000 Server, it
indicates that IP address associated with the router.
The config of e0 ( when working normal) looks like this:
Interface Ethernet 0
ip address 192.168.0.9 255.255.255.0
Any ideas???
I think I will configure syslog debugging level and turn on dhcp debugging.
With that I should get at very least the moment that the address
changes...and hopefully some dhcp debug output. I suppose I could also put a
sniffer in and try to detect it.
Thanks
""Erick B."" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> That is strange. What type of router and IOS version?
>
> Just to clarify, the interface has 'ip address x.x.x.x
> y.y.y.y' config and not 'ip address dhcp' with a
> static DHCP assigned address. Being DSL, is it PPPoE
> by chance?
>
> Does e0 connect to DSL/Internet and e1 to their
> network or vice versa?
>
> --- Dain Deutschman wrote:
> > Hi all,
> >
> > I have a problem with a client on a dsl connection.
> > Ethernet 0 and 1 both
> > have statically assigned IP addresses. I leave the
> > customer site and 3 days
> > later they call and have no internet. I check the
> > router config and E0 has
> > the wrong IP address. I check the Win2000 DHCP
> > server and that address is
> > listed as leased to the router.
> >
> > Any ideas why the router is allowing this to happen?
> >
> > --
> > Dain Deutschman
> > CNA, MCP, CCNA
> > Data Communications Manager
> [EMAIL PROTECTED]
>
>
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