netdev - Re: [**EXTERNAL**] Re: VRF with enslaved L3 enabled bridge

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Message-ID: <51e237af-2db6-8905-22c9-9739f7d5a9b0@cumulusnetworks.com>
Date:   Mon, 23 Jul 2018 16:00:20 -0600
From:   David Ahern <dsa@...ulusnetworks.com>
To:     "D'Souza, Nelson" <ndsouza@...na.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [**EXTERNAL**] Re: VRF with enslaved L3 enabled bridge

On 7/20/18 1:03 PM, D'Souza, Nelson wrote:
> Setup is as follows:
> 
> ethUSB(ingress port) -> mgmtbr0 (bridge) -> mgmtvrf (vrf)



                         |  netns foo
 [ test-vrf ]            |
       |                 |
    [ br0 ] 172.16.1.1   |
       |                 |
   [ veth1 ] ============|======= [ veth2 ]      lo
                         |       172.16.1.2     172.16.2.2
                         |


Copy and paste the following into your environment:

ip netns add foo
ip li add veth1 type veth peer name veth2
ip li set veth2 netns foo

ip -netns foo li set lo up
ip -netns foo li set veth2 up
ip -netns foo addr add 172.16.1.2/24 dev veth2


ip li add test-vrf type vrf table 123
ip li set test-vrf up
ip ro add vrf test-vrf unreachable default

ip li add  br0 type bridge
ip li set veth1 master br0
ip li set veth1 up
ip li set br0 up
ip addr add dev br0 172.16.1.1/24
ip li set br0 master test-vrf

ip -netns foo addr add 172.16.2.2/32 dev lo
ip ro add vrf test-vrf 172.16.2.2/32 via 172.16.1.2

Does ping work?
# ping -I test-vrf 172.16.2.2
ping: Warning: source address might be selected on device other than
test-vrf.
PING 172.16.2.2 (172.16.2.2) from 172.16.1.1 test-vrf: 56(84) bytes of data.
64 bytes from 172.16.2.2: icmp_seq=1 ttl=64 time=0.228 ms
64 bytes from 172.16.2.2: icmp_seq=2 ttl=64 time=0.263 ms

and:
# ping -I br0 172.16.2.2
PING 172.16.2.2 (172.16.2.2) from 172.16.1.1 br0: 56(84) bytes of data.
64 bytes from 172.16.2.2: icmp_seq=1 ttl=64 time=0.227 ms
64 bytes from 172.16.2.2: icmp_seq=2 ttl=64 time=0.223 ms
^C
--- 172.16.2.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1001ms
rtt min/avg/max/mdev = 0.223/0.225/0.227/0.002 ms