RE: OSPF to Internet Q [7:61823]

2003-01-24 Thread Priscilla Oppenheimer
I'm afraid your question isn't clear. By definition, an ASBR connects two unlike networks, one that is running OSPF and one that isn't. So, the ASBR will connect to the Internet in your example. Steve Ringley wrote: > > I have an OSPF network, and I have my Internet connections. Do > I: > > AS

Re: OSPF to Internet Q [7:61823]

2003-01-25 Thread Steve Ringley
That is why I am asking the question - it is unclear! Let me try it this way: If we take the textbook Internet setup, we would have an outside router - BGP firewall inside router - OSPF ASBR to BGP core router - OSPF backbone On the inside router, would I create an ASBR with area 0 defines on t

Re: OSPF to Internet Q [7:61823]

2003-01-25 Thread Peter van Oene
Why not just push default into your OSPF network from a router(s) with a direct link to your firewall. Then your firewall simply points default to the BGP speaking router (or uses vrrp or some igp for resilient routing in the case of multiple routers) Running BGP through your firewall, or redi

RE: OSPF to Internet Q [7:61823]

2003-01-25 Thread Howard C. Berkowitz
At 1:18 AM + 1/25/03, Priscilla Oppenheimer wrote: >I'm afraid your question isn't clear. > >By definition, an ASBR connects two unlike networks, one that is running >OSPF and one that isn't. Moan...connects two unlike routing domain. Both could be different OSPF processes. >So, the ASBR wi

Re: OSPF to Internet Q [7:61823]

2003-01-25 Thread Priscilla Oppenheimer
Steve Ringley wrote: > > That is why I am asking the question - it is unclear! Let me > try it this > way: > > If we take the textbook Internet setup, we would have an > > outside router - BGP > firewall > inside router - OSPF ASBR to BGP > core router - OSPF backbone > > On the inside router,

RE: OSPF to Internet Q [7:61823]

2003-01-25 Thread Priscilla Oppenheimer
Howard C. Berkowitz wrote: > > At 1:18 AM + 1/25/03, Priscilla Oppenheimer wrote: > >I'm afraid your question isn't clear. > > > >By definition, an ASBR connects two unlike networks, one that > is running > >OSPF and one that isn't. > > Moan...connects two unlike routing domain. Both could b

RE: OSPF to Internet Q [7:61823]

2003-01-25 Thread Howard C. Berkowitz
At 8:23 PM + 1/25/03, Priscilla Oppenheimer wrote: >Howard C. Berkowitz wrote: >> >> At 1:18 AM + 1/25/03, Priscilla Oppenheimer wrote: >> >I'm afraid your question isn't clear. >> > >> >By definition, an ASBR connects two unlike networks, one that >> is running >> >OSPF and one that

Re: OSPF to Internet Q [7:61823]

2003-01-25 Thread Howard C. Berkowitz
At 8:56 PM + 1/25/03, Priscilla Oppenheimer wrote: >Steve Ringley wrote: >> >> That is why I am asking the question - it is unclear! Let me >> try it this >> way: >> >> If we take the textbook Internet setup, we would have an >> >> outside router - BGP >> firewall >> inside router - OSP

Re: OSPF to Internet Q [7:61823]

2003-01-26 Thread Steve Ringley
I understand that there are many ways to, umm, do you-know-what to the cat, but what I am looking for is a higher guiding philosophy or rule to use as a foundation to guide the rest of the process. My understanding of the high-level OSPF process is that OSPF wants to route traffic from area a to a

Re: OSPF to Internet Q [7:61823]

2003-01-26 Thread Howard C. Berkowitz
At 6:56 PM + 1/26/03, Steve Ringley wrote: >I understand that there are many ways to, umm, do you-know-what to the cat, >but what I am looking for is a higher guiding philosophy or rule to use as a >foundation to guide the rest of the process. My understanding of the >high-level OSPF process i

Re: OSPF to Internet Q [7:61823]

2003-01-27 Thread Steve Ringley
Yes, it is an Internet ASBR, there are others, and its only purpose is to advertise a default route + local DMZ into OSPF. The ASBR would get a default route from BGP. In turn the ISP is advertising a default route via BGP into the outside router. The plan is that if the ISP stops advertising at

Re: OSPF to Internet Q [7:61823]

2003-01-27 Thread ericbrouwers
Steve, > Yes, it is an Internet ASBR, there are others, and its only purpose is to > advertise a default route + local DMZ into OSPF. The ASBR would get a > default route from BGP. In turn the ISP is advertising a default route via > BGP into the outside router. The plan is that if the ISP stop

Re: OSPF to Internet Q [7:61823]

2003-01-27 Thread Howard C. Berkowitz
>Yes, it is an Internet ASBR, there are others, and its only purpose is to >advertise a default route + local DMZ into OSPF. The ASBR would get a >default route from BGP. In turn the ISP is advertising a default route via >BGP into the outside router. The plan is that if the ISP stops advertisin

Re: OSPF to Internet Q [7:61823]

2003-01-29 Thread Steve Ringley
I think I have reached my 'rule' actually. In a normal situation, I would want the Internet ASBRs injecting default routes on area 0, as that is where everything is passing through anyway. This assumes a 'clean' environment where the only things being routed in the OSPF AS are private addresses.