BGP best path algorithm in RR environment

Hello Bird Users, Have a question about bgp best path algorithm in Route Refletector environment and possible fix: Topology ( we use only iBGP with multiply RR): r01a.tor - r01.leaf.105---r01.spiner01.leaf108-r09a.tor I announce the same block 172.232.0.0/19 from both tors

Re: BGP best path algorithm in RR environment

4yzVIakFfyFYALg5qiCWoJ-VfKsSyJy2aYMXvIoY5myyvsy41XQPC862yoN5iLL7GvrlmJ2$ Regards, Alexander Zubkov Qrator Labs On Wed, Sep 13, 2023 at 11:43 AM Mazur, Dariusz via Bird-users mailto:bird-users@network.cz>> wrote: > > Hello Bird Users, > > Have a question about bgp best path algorithm in Route Ref

Re: BGP best path algorithm in RR environment

ird.network.cz/?get_docamp;v=20amp;f=bird-6.html;>*bgp-aigp__;Iw!!GjvTz_vk!Xxvtj4yzVIakFfyFYALg5qiCWoJ-VfKsSyJy2aYMXvIoY5myyvsy41XQPC862yoN5iLL7GvrlmJ2$ > > > Regards, > Alexander Zubkov > Qrator Labs > > > On Wed, Sep 13, 2023 at 11:43 AM Mazur, Dariusz via Bir

Link local vs global v6 next hop for BGP rotuer

Hello, In my setup I have iBGP session with peer , and I learn v6 route. It is iBGP so we have 2 next hops global and link-local. By default bird uses link-local when route is exported to kernel. Is there any command to change this behavior and use global v6 address as BGP next hop when we

Re: Link local vs global v6 next hop for BGP rotuer

ext-hop 2600:1488:6081:106::a; next term; } } Thanks, Dariusz On 9/20/22, 6:11 PM, "Ondrej Zajicek" wrote: On Mon, Sep 19, 2022 at 01:23:28PM +, Mazur, Dariusz via Bird-users wrote: > Hello, > In my setup I have iBGP session with peer , and I learn v6

Re: Bird does not prefer older eBGP route - RFC5004 and "older prefer on"

`show route all` output to see all the relevant BGP attributes? Maria On 6/30/23 11:43, Mazur, Dariusz via Bird-users wrote: Hello Bird users, Have you ever use RFC 5004 and “older prefer” knob. I am trying to use it but it seems not to work: 1.Router learns the same route from different ebgp pee

Bird does not prefer older eBGP route - RFC5004 and "older prefer on"

Hello Bird users, Have you ever use RFC 5004 and “older prefer” knob. I am trying to use it but it seems not to work: 1.Router learns the same route from different ebgp peers, it prefers route from r01a and this route is exported to BGP peers 172.232.160.0/19 unicast

BGP as-override in BIRD

Hello Bird users, I was trying to find how to configure BGP as-override in BIRD, but without success. I am looking for this in BIRD: https://www.juniper.net/documentation/us/en/software/junos/bgp/topics/ref/statement/as-override-edit-protocols-bgp.html Did anyone use this option? Thanks,

RTBH (Remotely Triggered Black Hole) using Bird

Hello Bird Users, I am trying to implement RTBH (Remotely Triggered Black Hole) in below setup: 0.Simplified Topology: * ebgp fabric * inside fabric we use only IPv6, so we announce IPv4 blocks with IPv6 next hop (extended next hop) * tor --- leaf --- spine---3xstem(3xborder_leaf)

Re: RTBH (Remotely Triggered Black Hole) using Bird

Hello Ondrej, Thanks for explanation and workaround. It works like expected. Thanks, Dariusz On 3/18/24, 2:31 PM, "Ondrej Zajicek" mailto:santi...@crfreenet.org>> wrote: On Mon, Mar 18, 2024 at 09:57:22AM +, Mazur, Dariusz via Bird-users wrote: > Hello Bird U