From: Sam Munzani (sam@munzani.com)
Date: Thu May 27 2004 - 13:47:53 GMT-3
I thought about that tool. However PIX will not forward any default learned
from outside interface to inside. If PIX can announce conditional default to
internal network, my problem would be solved. e.g. If PIX learns default
from ISP nodes, then and then it will announce default to internal network
otherwise would not.
I already have started on TCL script as a last resort but was curious if can
be done without TCL.
Thanks,
Sam
> Do you have fixed IPs in the T1 ?
> What about asking your T1 provider to enable RIP and send you a default,
> or a local network...
>
> You need some means to get a keep alive scheme. If anything else fails,
> resorting to a tcl script might work... never tried that though.
>
> Sam Munzani wrote:
>
> > Hi,
> >
> > A friend of mine stumped me on using DSL backup for their Internet T1
line.
> > Below is how they are setup.
> >
> > ---------Internet----------
> > | |
> > ISP1(T1) ISP2(DSL)
> > | |
> > PIX-515 PIX-506
> > | |
> > ----- Router(R1) -------
> > |
> > Switch
> >
> > All users are connected to internal switch. ISP devices are part of
their
> > managed service so customer does not have access to it. CPE starts at
PIX
> > firewalls. They way it's done now is everybody's GW is router's ethernet
> > interface. Router has default route pointing to PIX-515. In case of T1
> > failure, manually change that default route to point to PIX-506. Both
> > firewalls has necessary NATs, rules defined properly so they start using
DSL
> > for internet. They don't have deep pocket for BGP so inbound mail
traffic will
> > not work until T1 is restored and they are OK with it.
> >
> > Is there any way to make the failover automatic? Since there is no
dynamic
> > routing between ISP routers and R1, how would R1 know about line
failure?
> >
> > Any ideas will be greatly appreciated.
> >
> > Sam Munzani
> > CCIE # 6479(R&S, Security)
> >
> > _______________________________________________________________________
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>
> --
> Carlos G Mendioroz <tron@huapi.ba.ar> LW7 EQI Argentina
>
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