Let packets from different BGP go to different routing tables

[Brandon Zhi]

Hi Vincent,

Thanks for helping.

Well, I have already done it.

Our real problem is how to get the packets from downstream to the routing
table I need.

Because bird is just a software for importing or exporting routing tables,
it is the Linux kernel that is really responsible for forwarding packets.

In the case where I don't set any ip rule, all packets will use a routing
table called main.

Is there any way I can achieve this?


We have only one interface for BGP:      ens18
And our IP Address is:  2a0f:5707:ffe3::57 AS141011
Our customers assume is: 2a0f:5707:ffe3::1 AS1
Our upstream which allowed downstream:2a0f:5707:ffe3::30 AS6939

Therefore we have a BGP session with AS1 and a BGP session with AS6939
AS6939 > Table 147

How should I make the traffic from AS1 (2a0f:5707:ffe3::1) use table 147?



Vincent Bernat <bernat at luffy.cx> 於 2022年7月13日週三 上午8:03寫道：

> On 2022-07-13 08:08, Brandon Zhi wrote:
>
> > We created a bgp_v6 (IBGP) session on tunnel1 that allows downstream BGP
> > sessions like HE(Hurricane Electric) and put the routing table into
> > table 147.
> >
> > Create bgp_v6_own(IBGP) on tunnel2 to transmit those routing tables from
> > BGP that cannot carry downstream to Table 247
>
> You can use the pipe protocol to copy some routes from one table to the
> other. So, you'll need one table to receive routes from BGP, then you
> can have two "pipe" protocols to copy them on table 147 and table 247.
>


-- 
*Brandon Zhi*
HUIZE LTD

www.huize.asia  <https://huize.asia/>| www.ixp.su | Twitter
<https://twitter.com/zhihuiyuze>


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