Quagga (Two AS in one router)

thomas · External Since: Jul 04, 2007 Posts: 2

Does anyone got any success case for two ASNs implement into one quagga
bgp daemon ? Thanks.

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tomfi · External Since: Jan 16, 2006 Posts: 11

Ok, you understand that more then 1 AS within 1 router is against
principles of bgp. So you must think another way, not try to "hack" it...
BGP is little diferent then OSPF.

http://www.faqs.org/rfcs/rfc1771.html
cite:
" The classic definition of an Autonomous System is a set of routers
under a single technical administration"
no "set of AS within one router Wink

"

PS:"I'm in 3 ases" - you cant be in more then 1 AS, you can have more
then 1 AS but they are separated, maybe neighboring, but separated ...
not "joined".

Tomfi

PSS: If is possible to run more then one quagga daemon within one
router, it's not gut Wink

Wojciech Ziniewicz napsal(a):
> 2007/7/23, tomfi <tomfi.TakeThisOut@volny.cz>:
>> It is impossible to be in 2 as at one time ...
>> Maybe the problem is not Quagga, but network design.
>>
>> Tomfi
>
> sure, I'm in 3 ases now but can't assign more than 1 AS to one quagga daemon.
> i mean the router-id parameter.
>

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Andrew Miehs · External Since: Apr 16, 2004 Posts: 52

Now I am more than confused...

On 25/07/2007, at 3:19 PM, Wojciech Ziniewicz wrote:

> 2007/7/25, tomfi <tomfi.TakeThisOut@volny.cz>:
>> Ok, you understand that more then 1 AS within 1 router is against
>> principles of bgp. So you must think another way, not try to
>> "hack" it...
>> BGP is little diferent then OSPF.
>
> That's a nice note, but assuming that we have x routers with y ASes on
> them, what will be the information propagated to the internet ?
> I think that it's meaningless to set up such a solution .

Normally, 1 router, 1 AS...
Multiple ASes, Multiple routers.

>>
>> http://ww.faqs.org/rfcs/rfc1771.html
>> cite:
>> " The classic definition of an Autonomous System is a set of routers
>> under a single technical administration"
>> no "set of AS within one router Wink

"
>>
>> PS:"I'm in 3 ases" - you cant be in more then 1 AS, you can have more
>> then 1 AS but they are separated, maybe neighboring, but
>> separated ...
>> not "joined".
>

I have never used Quagga, or Zebra, but it looks as if they inject
their routes back into the kernel - therefore only one routing
engine...

If the original poster really wants to do this, they could always
try running multiple Xen instances on the one machine and then
run one AS per Xen instance - but this all sounds very nasty
and confusing - Add a little VLAN to this mixture and....

.... I think I need to go lie down - my head is starting to
hurt...

Regards

Andrew

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tomfi · External Since: Jan 16, 2006 Posts: 11

> On 25/07/2007, at 3:19 PM, Wojciech Ziniewicz wrote:
>> That's a nice note, but assuming that we have x routers with y ASes on
>> them, what will be the information propagated to the internet ?
>> I think that it's meaningless to set up such a solution .
You are thinking globally, You must separe x routers with y ASes is not
correct interpretation:
We have y ASes with x/y routers within them Smile

> Normally, 1 router, 1 AS...
> Multiple ASes, Multiple routers.

router is always in only one AS .... that is correct mr. Miehs Wink

> Wojciech Ziniewicz wrote:
> sry, should be "peered" with 3 ASes. here in poland i'm peered >
with a global mesh of asses 1. transit global which has 222088 >
routes, 2. polish transit with 3992 routers and our own > exchange
centre ( ACX ) with 1094 lines. Of course we're
> using external bgp.
That sounds better Smile

. It sounds like we don't understand each other Very Happy

.
So You are trying to make something like this :

| |
|IBGP |
______|_____|___
EBGP | | EBGP
1.AS ------------| your ROUTER |---------------- 2. AS
| your AS |
|______________|
|
|EBGP
|
3.AS

This is normal, and there should be any problem.

You CANNOT implement something like this:
your Router
_________________
|1.AS |
| 2.AS |-> router is internal for more than 1 AS
| |
| 3.AS |
-----------------
Tomfi

PS: quagga(Zebra) must work well because here in Czech republic they use
it in Cesnet Backbone.

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