Way to use Bird as route server

[Osmos]

Hi there,

just doing some tests with Bird as route server, but the result was not the desired.
Other staff like RTBH is running fine.

The situation is that next-hop is not modified (used only RS CLIENT option).
All are eBGP sessions.

Checked some examples around and found no way to deploy correctly.
Any advise or template to achieve this function?

Thanks in advance.
Regards,
Jorge.

[John Jensen]

NEXT_HOP is not supposed to be modified.

http://tools.ietf.org/html/draft-jasinska-ix-bgp-route-server-03

-JJ

Post by Osmos
Hi there,
just doing some tests with Bird as route server, but the result was not the desired.
Other staff like RTBH is running fine.
The situation is that next-hop is not modified (used only RS CLIENT option).
All are eBGP sessions.
Checked some examples around and found no way to deploy correctly.
Any advise or template to achieve this function?
Thanks in advance.
Regards,
Jorge.

[Osmos]

Hi John,

right, it makes sense.
After playing on lab, what I checked is that AS_PATH is not modified but next-hop is pointing to route server itself.
Reading this draft, next-hop should be one of the rs client (depending on prefix).

Configuration tested is based on eBGP session (in, out route maps) and RSCLIENT option active. Route servers clients are Juniper and Vyatta devices.
Ospf is running for loopbacks.

If it helps, will paste some cli output.

Thanks in advance.
Jorge.

Post by John Jensen
NEXT_HOP is not supposed to be modified.
http://tools.ietf.org/html/draft-jasinska-ix-bgp-route-server-03
-JJ

Post by Osmos
Hi there,
just doing some tests with Bird as route server, but the result was not the desired.
Other staff like RTBH is running fine.
The situation is that next-hop is not modified (used only RS CLIENT option).
All are eBGP sessions.
Checked some examples around and found no way to deploy correctly.
Any advise or template to achieve this function?
Thanks in advance.
Regards,
Jorge.

[Frederik Kriewitz]

Post by Osmos
Hi there,
just doing some tests with Bird as route server, but the result was not the desired.
Other staff like RTBH is running fine.
The situation is that next-hop is not modified (used only RS CLIENT option).
All are eBGP sessions.

Usually that's the intended behavior of a route server.
If you need something else have a look at the "next hop self" option,
besides that you can set the next hop in filters using bgp_next_hop.

[Osmos]

Thanks Frederik,

is the intended behavior the one wanted to deploy.
Found that AS_PATH is not modified but next-hop is modified to RS itself.

Regards,
Jorge.

Post by Frederik Kriewitz

Post by Osmos
Hi there,
just doing some tests with Bird as route server, but the result was not the desired.
Other staff like RTBH is running fine.
The situation is that next-hop is not modified (used only RS CLIENT option).
All are eBGP sessions.

Usually that's the intended behavior of a route server.
If you need something else have a look at the "next hop self" option,
besides that you can set the next hop in filters using bgp_next_hop.

[Ondrej Filip]

Post by Osmos
Hi there,
just doing some tests with Bird as route server, but the result
was not the desired. Other staff like RTBH is running fine.
The situation is that next-hop is not modified (used only RS
CLIENT option). All are eBGP sessions.

Hi Jorge!
The next-hop shouldn't be modified. I was personally involved in
many route servers deployments in many IXPs and I can assure you
that nobody does that. Why do you need that?

Ondrej

Post by Osmos
Checked some examples around and found no way to deploy
correctly. Any advise or template to achieve this function?
Thanks in advance. Regards, Jorge.

[Osmos]

Hi Ondrej,

will need to join the way that IXPs do.
What I get is AS_PATH not modified and next-hop modified.

RS clients get next-hop attribute of route sever itself.

Regards,
Jorge.

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Post by Osmos
Hi there,
just doing some tests with Bird as route server, but the result
was not the desired. Other staff like RTBH is running fine.
The situation is that next-hop is not modified (used only RS
CLIENT option). All are eBGP sessions.

Hi Jorge!
The next-hop shouldn't be modified. I was personally involved in
many route servers deployments in many IXPs and I can assure you
that nobody does that. Why do you need that?
Ondrej

Post by Osmos
Checked some examples around and found no way to deploy
correctly. Any advise or template to achieve this function?
Thanks in advance. Regards, Jorge.

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[Ondrej Filip]

Post by Osmos
Hi Ondrej,
will need to join the way that IXPs do. What I get is AS_PATH not
modified and next-hop modified.
RS clients get next-hop attribute of route sever itself.

I see. That's wrong. Can you send me you configuration?

Ondrej

Post by Osmos
Regards, Jorge.

On 22.10.2014 14:56, Osmos wrote: Hi there,
just doing some tests with Bird as route server, but the
result was not the desired. Other staff like RTBH is
running fine.
The situation is that next-hop is not modified (used only
RS CLIENT option). All are eBGP sessions.

Hi Jorge! The next-hop shouldn't be modified. I was personally
involved in many route servers deployments in many IXPs and I can
assure you that nobody does that. Why do you need that?
Ondrej

Checked some examples around and found no way to deploy
correctly. Any advise or template to achieve this
function?
Thanks in advance. Regards, Jorge.