vrf configuration with same addresses

[Alexander Zubkov]

Hi,

What version of bird you are using? There was a path for BGP & VRF applied
just recently:
https://gitlab.labs.nic.cz/labs/bird/commit/e19d08055a4614f03e51ee72617be10946ce7919

On Sun, Nov 4, 2018 at 5:01 PM, Semion Lisyansky <semionl at gmail.com> wrote:

> Hi All,
>
> Tried to configure vrf with same own and peer addresses as in global.
> When I ping in vrf,  packets go in and out via correct interfaces,
> but bird bgp sessions are constantly flapping. Only one session to peer
> with same address exists at each moment
> As a w/a tried to configure interface per session, but this did not helped.
>
> Here is my partial configuration:
>
>
> protocol device {
>   scan time 2;    # Scan interfaces every 2 seconds
> }
> protocol direct {
>         interface "br*";                # bridge interfaces
>         interface "swp*";       # router ports
>         interface "bond*";              # Disable by default
>         ipv4;                   # Connect to default IPv4 table
>         ipv6;                   # ... and to default IPv6 table
> }
>
> protocol kernel {
>         ipv4 {                  # Connect protocol to IPv4 table by channel
>               table master4;    # Default IPv4 table is master4
>               import none;      # Import to table, default is import all
>               export all;       # Export to protocol. default is export
> none
>         };
>         learn on;                       # Learn alien routes from the
> kernel
>         merge paths yes;
> }
>
> protocol bgp bgp3411 {
>         local as 65001;
>         bfd yes;
>         neighbor 191.34.1.3 as 65034;
> #        interface "swp2";
>         ipv4 {
>                 import all;
>                 export all;
>         };
> }
>
> protocol bgp bgp3412 {
>         local as 65001;
>         bfd yes;
>         neighbor 192.34.1.3 as 65034;
> #        interface "swp1";
>         ipv4 {
>                 import all;
>                 export all;
>         };
> }
>
>
> ipv4 table table_vrf01;
>
> protocol kernel kernel_vrf01 {
>         vrf "vrf01";
>         kernel table 101;
>         scan time 2;
>         ipv4 {
>                 table table_vrf01;
>                 import none;    # Default is import all
>                 export all;     # Default is export none
>         };
>         merge paths yes;
>         learn on;               # Learn all alien routes from the kernel
> }
>
> protocol direct direct_vrf01 {
>         vrf "vrf01";
>         ipv4 { table table_vrf01; };
>         interface  "swp7.101";
>         interface  "swp1.201";
>         interface  "swp2.301";
>         interface  "vrf01";
> }
>
> protocol static static_vrf01 {
>         vrf "vrf01";
>         ipv4 { table table_vrf01; };
> }
>
> protocol bgp bgp_vrf01_n1 {
>         vrf "vrf01";
>         local as 65001;
>         graceful restart;
>         neighbor 191.34.1.3 as 65034;
>         ipv4 {
>                 table table_vrf01;
>                 import none;
>                 export none;
>         };
> }
>
> protocol bgp bgp_vrf01_n2 {
>         vrf "vrf01";
>         local as 65001;
>         graceful restart;
>         neighbor 192.34.1.3 as 65034;
>         ipv4 {
>                 table table_vrf01;
>                 import none;
>                 export none;
>         };
> }
>
>
>
> ip -br link show type vrf
> vrf01            UP             fe:58:94:d2:d8:ee
> <NOARP,MASTER,UP,LOWER_UP>
> vrf02            UP             42:2d:8f:bd:87:9f
> <NOARP,MASTER,UP,LOWER_UP>
> (mlnx)root at bdg-crf-01:~# ip route show vrf vrf01
> 172.1.7.0/24 dev swp7.101 proto kernel scope link src 172.1.7.1 offload
> 191.34.1.2/31 dev swp2.301 proto kernel scope link src 191.34.1.2 offload
> 192.34.1.2/31 dev swp1.201 proto kernel scope link src 192.34.1.2 offload
> (mlnx)root at bdg-crf-01:~# ip route show table 101
> broadcast 172.1.7.0 dev swp7.101 proto kernel scope link src 172.1.7.1
> 172.1.7.0/24 dev swp7.101 proto kernel scope link src 172.1.7.1 offload
> local 172.1.7.1 dev swp7.101 proto kernel scope host src 172.1.7.1
> broadcast 172.1.7.255 dev swp7.101 proto kernel scope link src 172.1.7.1
> local 191.34.1.2 dev swp2.301 proto kernel scope host src 191.34.1.2
> 191.34.1.2/31 dev swp2.301 proto kernel scope link src 191.34.1.2 offload
> local 192.34.1.2 dev swp1.201 proto kernel scope host src 192.34.1.2
> 192.34.1.2/31 dev swp1.201 proto kernel scope link src 192.34.1.2 offload
>
>
> --
> Semion Lisyansky
>
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