It seems R740 vpp works fine. All packets coming from port 1 go to port 2.
vpp# sh int
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 2 up 9000/0/0/0 tx
packets 30895
tx
bytes 3676505
eth1 1 up 9000/0/0/0 rx
packets 30895
rx
bytes 3676505
local0 0 down 0/0/0/0
vpp# sh int
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 2 up 9000/0/0/0 tx
packets 30897
tx
bytes 3676743
eth1 1 up 9000/0/0/0 rx
packets 30897
rx
bytes 3676743
local0 0 down 0/0/0/0
vpp# sh error
Count Node Reason
30899 l2-output L2 output packets
30899 l2-learn L2 learn packets
1 l2-learn L2 learn misses
30899 l2-input L2 input packets
30899 l2-flood L2 flood packets
vpp#
The drop happened on R230 vpp. Port 3 dropped all pkts complaining about
down interface. However, show command shows interfaces are up.
vpp# sh int
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
eth0 2 up 9000/0/0/0 rx
packets 30925
rx
bytes 3680075
drops
5
punt
1
tx-error 30920
eth1 1 up 9000/0/0/0 rx
packets 30920
rx
bytes 3679480
tx
packets 30919
tx
bytes 3679361
drops
30920
tx-error 3
local0 0 down 0/0/0/0
vpp# sh error
Count Node Reason
2 llc-input unknown llc ssap/dsap
61846 l2-output L2 output packets
61846 l2-learn L2 learn packets
2 l2-learn L2 learn misses
61846 l2-input L2 input packets
61846 l2-flood L2 flood packets
1 ethernet-input l3 mac mismatch
3 eth1-output interface is down
30922 eth0-output interface is down
vpp#
Not sure how to check mac issues. Can you explain a bit more? Here is what
I can see on R230 vpp.
vpp# show bridge-domain 1 detail
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding
ARP-Term arp-ufwd BVI-Intf
1 1 0 off on on flood on
off off N/A
Interface If-idx ISN SHG BVI TxFlood
VLAN-Tag-Rewrite
eth0 2 1 0 - *
none
eth1 1 1 0 - *
none
vpp# sh l2fib verbose
Mac-Address BD-Idx If-Idx BSN-ISN Age(min) static filter bvi
Interface-Name
28:99:3a:f4:3a:a6 1 2 0/1 - - - -
eth0
28:99:3a:f4:3a:9c 1 1 0/1 - - - -
eth1
L2FIB total/learned entries: 2/2 Last scan time: 0.0000e0sec Learn limit:
4194304
vpp#
On Wed, Oct 16, 2019 at 6:01 PM Balaji Venkatraman (balajiv) <
bala...@cisco.com> wrote:
> +-------------------------------------------------------------------------+
>
> | |
>
> | |
>
> | IXIA |
>
> | |
>
> | |
>
> +-----------------------------------------------------------^-------------+
>
> |172.16.1.1/24 |
> 172.16.1.2/24
>
> | |
>
> | |
>
> |eth0 | eth0
>
> +-----------v-------------+ +------------+-----------+
>
> | 1 | | 4 |
>
> | | | |
>
> | | | |
>
> | | | |
>
> | |eth1 eth1 | |
>
> | VPP1 2 +--------------------> 3 VPP 2 |
>
> | | | |
>
> | | | |
>
> | | | |
>
> | | | |
>
> +-------------------------+ +------------------------+
>
> R 740 R 230
>
>
>
>
>
> Might help if you could check if the packet counts at ingress (port 1) &
> egress (port 2) match. Similarly 3 & 4. And the mac entries seen on both
> vpp(s). ARP req/rep tracing might also help.
>
>
>
>
>
> /-
>
> Balaji
>
>
>
>
>
>
>
>
>
> *From: *<vpp-dev@lists.fd.io> on behalf of "Damjan Marion via Lists.Fd.Io"
> <dmarion=me....@lists.fd.io>
> *Reply-To: *"dmar...@me.com" <dmar...@me.com>
> *Date: *Wednesday, October 16, 2019 at 5:12 PM
> *To: *"chuan...@google.com" <chuan...@google.com>
> *Cc: *"vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
> *Subject: *Re: [vpp-dev] Basic l2 bridging does not work
>
>
>
>
>
> On 16 Oct 2019, at 16:14, Chuan Han via Lists.Fd.Io <
> chuanhan=google....@lists.fd.io> wrote:
>
>
>
> Hi, vpp experts,
>
>
>
> We are trying to make basic l2 bridge works within vpp.
>
>
>
> We have two servers: r230 and r740, each of which has two phy nics. Two
> servers are connected via cable. On each server, we bring these two nics
> into the same vpp instance and put them into the same l2 bridge. We tried
> sending traffic using ixia. However, ixia shows ping does not work.
>
>
>
> I attached the topology, vpp conf files, startup conf file, and logs.
>
>
>
> Please advise where we could make it wrong.
>
>
>
> Thanks.
>
> Chuan
>
> <r230 vpp.conf><r740 vpp.conf><r230 vpp startup.cfg><r740 vpp
> startup.cfg><r740.log><r230.log><vpp testbed -
> bridge.pdf>-=-=-=-=-=-=-=-=-=-=-=-
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>
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>
>
>
> On the 1st look everything look ok including the packet trace.
>
> Can you try to clear counters* and enable packet trace on both instances.
>
> Then send known number of packets and find put where drop happens by
> looking into same outputs you already shared.....
>
>
>
> * "clear int", "clear run", "clear trace"
>
>
>
> --
> Damjan
>
>
>
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