Bgp 4 peer problems, 2 peer stay in connect

[Mattia Milani]

i had put every link on a /30 so the session between two peer have a
different network address for every link.

Thanks a lot for the help :)

2018-03-07 18:23 GMT+01:00 Mattia Milani <mattia.milani at studenti.unitn.it>:

> yeah that's right i can't ping H2 from H0 but H0 know only H1 it didn't
> try to reach H2 indeed when i try to ping H1.eth1 from H0.eth1 it works.
> this nitht i will modify my program to have different networks an i will
> notify you if it works.
>
> Another question, when it will be implemented Aggregation on BGP? have you
> planed it?
>
> Thanks, Mattia
>
> 2018-03-07 17:59 GMT+01:00 Daniel Suchy <danny at danysek.cz>:
>
>> Hello,
>> as Ondrej mentioned already, you have wrong basic network setup - you're
>> using wrong network masks. H0 thinks, that all nodes (H1, H2, H3) ale in
>> single directly-connected L2 network.
>>
>> To have BGP working, you need to have basic L3 connectivity working -
>> that means, you must be able to ping each host (and this will not work
>> in your setup). It's not a problem with Bird.
>>
>> With regards,
>> Daniel
>>
>>
>> On 03/07/2018 05:20 PM, Mattia Milani wrote:
>> > all external interface of the peer belong to the same network, and the
>> > address of the network is 10.0.0.0/8 <http://10.0.0.0/8> that is unic.
>> >
>> > sorry for the network picture, i noted after had sended the email that
>> > it get mangled.
>> > now i try to explain it more clearly
>> >
>> > H0 belong to AS2 and have the interface eth1 with the address
>> 10.0.0.1/8
>> > <http://10.0.0.1/8> and it is connected with H1
>> > H1 belong to AS4 and have two interfaces:
>> >      -eth1 with the address 10.0.1.1/8 <http://10.0.1.1/8> that is
>> > connected with H0.eth1
>> >      -eth2 with the address 10.0.1.2/8 <http://10.0.1.2/8> that is
>> > connected with H2.eth2
>> > H2 belong to AS3 and have two interfaces:
>> >      -eth1 with the address 10.0.2.1/8 <http://10.0.2.1/8> that is
>> > connected with H3.eth1
>> >      -eth2 with the address 10.0.2.2/8 <http://10.0.2.2/8> that is
>> > connected with H1.eth2
>> > H3 belong to AS1 and have the interface eth1 with the address
>> 10.0.3.1/8
>> > <http://10.0.3.1/8> and it is connected with H2
>> >
>> > i hope that this way to explain the network is more clearly
>> >
>> > every interace is on the same network address so do you mean that every
>> > bgp session between two peer need to have different network address?
>> >
>> >
>> >
>> > 2018-03-07 17:01 GMT+01:00 Ondrej Zajicek <santiago at crfreenet.org
>> > <mailto:santiago at crfreenet.org>>:
>> >
>> >     On Wed, Mar 07, 2018 at 04:45:55PM +0100, Mattia Milani wrote:
>> >     > yeah they are a /8, so bird doesn't support /8?
>> >     > now i'll try to modify them.
>> >     >
>> >     > but sorry, why bird doesn't support /8?
>> >
>> >     BIRD of course supports /8 (and any other prefix lengths), but your
>> >     network setup have more networks with the same network prefix
>> >     (10.0.0.0/8 <http://10.0.0.0/8>), if i understand your network
>> >     picture correctly (it get
>> >     mangled in mail). Such network setup is not generally correct.
>> >
>> >     --
>> >     Elen sila lumenn' omentielvo
>> >
>> >     Ondrej 'Santiago' Zajicek (email: santiago at crfreenet.org
>> >     <mailto:santiago at crfreenet.org>)
>> >     OpenPGP encrypted e-mails preferred (KeyID 0x11DEADC3,
>> >     wwwkeys.pgp.net <http://wwwkeys.pgp.net>)
>> >     "To err is human -- to blame it on a computer is even more so."
>> >
>> >
>>
>
>
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