Re: Questions about VRF function in /etc/network/interfaces
On Sat, Dec 29, 2018 at 01:36:37PM +0800, Simon Jones wrote:
> Hi all,
>
> I'm working on SONiC project management vrf function
SONiC: https://azure.github.io/SONiC/ Software for Open Networking in the Cloud, SONiC
VRF: https://en.wikipedia.org/wiki/Virtual_routing_and_forwarding
> under debian with kernel 4.3.
>
> This is my OS:
>
> > # uname -a
> > Linux dut211 4.9.0-7-amd64 #1 SMP Debian 4.9.110-3+deb9u2 (2015-12-19) x86_64 GNU/Linux
Euh, that 4.9 is not 4.3 ...
> This is SONiC project management vrf function:
>
> > https://www.youtube.com/watch?v=uAHmZKEdqDE&feature=youtu.be
>
>
> Now I have to rewrite /etc/network/interfaces to implement this function,
> but I got errors, so I want to know if there is demo about how to define
> VRF interface and implement VRF function in /etc/network/interfaces.
>
> As I follow your man file, I don't know how to do, and gots errors.
>
> This is my try on this feature, rewrite /etc/network/interfaces like this
>
> iface eth0 inet static
> > address 172.18.8.211
> > netmask 255.255.255.0
> > ########## management network policy routing rules
> > # management port up rules
> > up ip -4 link add mgmtvrf type vrf table 10
> > up ip -4 link set dev mgmtvrf up
> > up ip -4 link set dev eth0 master mgmtvrf
> > up ip -4 route add default via 172.18.8.1 dev eth0 table 10
> > up ip -4 route add 172.18.8.0/24 dev eth0 table 10
> > up ip -4 rule add from 172.18.8.211/32 table 10
> > post-up sysctl -w net.ipv4.tcp_l3mdev_accept=1
> > # management port down rules
> > down ip -4 route delete default via 172.18.8.1 dev eth0 table 10
> > down ip -4 route delete 172.18.8.0/24 dev eth0 table 10
> > down ip -4 rule delete from 172.18.8.211/32 table 10
> > down ip -4 link set dev eth0 nomaster
>
>
> This is errors I got
>
> > Dec 29 02:38:48 dut211 ifup[8690]: RTNETLINK answers: File exists
That means "defining something twice is not allowed".
See if you can find what is being defined for a second time.
> > Dec 29 02:38:48 dut211 ifup[8690]: ifup: failed to bring up eth0
> > Dec 29 02:38:48 dut211 systemd[1]: networking.service: Main process exited, code=exited, status=1/FAILURE
> > Dec 29 02:38:48 dut211 systemd[1]: Failed to start Raise network interfaces.
> > -- Subject: Unit networking.service has failed
> > -- Defined-By: systemd
> > -- Support: https://www.debian.org/support
> > --
> > -- Unit networking.service has failed.
> > --
> > -- The result is failed.
> > Dec 29 02:38:48 dut211 systemd[1]: networking.service: Unit entered failed state.
> > Dec 29 02:38:48 dut211 systemd[1]: networking.service: Failed with result 'exit-code???.
>
>
> Thank you.
>
Groeten
Geert Stappers
--
Leven en laten leven
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