Pragya,
UU-Flood stands for Unknown Unicast Flooding. It does not flood multicast or
broadcast packets. You need “Flooding” on to flood multicast/broadcast packets.
Steven
From: <vpp-dev@lists.fd.io> on behalf of Pragya Nand Bhagat
<pragya.nand.bhaga...@gmail.com>
Reply-To: "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
Date: Monday, August 1, 2022 at 2:59 AM
To: "vpp-dev@lists.fd.io" <vpp-dev@lists.fd.io>
Subject: Re: [vpp-dev] Bridge-domain function and usage.
Hi Stanislav,
Following is the trace :
with flooding enabled:
vpp# show bridge-domain 100 det
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding
ARP-Term arp-ufwd Learn-co Learn-li BVI-Intf
100 1 0 off on on
flood on off off 1
16777216 N/A
span-l2-input l2-input-classify l2-input-feat-arc l2-policer-classify
l2-input-acl vpath-input-l2 l2-ip-qos-record l2-input-vtr l2-learn l2-rw l2-fwd
l2-flood l2-flood l2-output
Interface If-idx ISN SHG BVI TxFlood
VLAN-Tag-Rewrite
port0/0 1 1 0 - * none
port0/1 2 108 0 - * none
port0/2 3 1 0 - * none
Packet 1
00:11:47:356640: dpdk-input
port0/0 rx queue 0
buffer 0xfc9fc3: current data 0, length 60, buffer-pool 0, ref-count 1, trace
handle 0x0
ext-hdr-valid
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x180, data_off 128, phys_addr
0x3f27f140
packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
ARP: a4:bf:01:89:9d:cf -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
a4:bf:01:89:9d:cf/30.30.30.6<http://30.30.30.6> ->
01:03:05:07:09:00/30.30.30.6<http://30.30.30.6>
00:11:47:356665: ethernet-input
frame: flags 0x3, hw-if-index 1, sw-if-index 1
ARP: a4:bf:01:89:9d:cf -> ff:ff:ff:ff:ff:ff
00:11:47:357793: l2-input
l2-input: sw_if_index 1 dst ff:ff:ff:ff:ff:ff src a4:bf:01:89:9d:cf [l2-learn
l2-flood ]
00:11:47:357796: l2-learn
l2-learn: sw_if_index 1 dst ff:ff:ff:ff:ff:ff src a4:bf:01:89:9d:cf bd_index 1
00:11:47:357799: l2-flood
l2-flood: sw_if_index 1 dst ff:ff:ff:ff:ff:ff src a4:bf:01:89:9d:cf bd_index 1
l2-flood: sw_if_index 1 dst ff:ff:ff:ff:ff:ff src a4:bf:01:89:9d:cf bd_index 1
00:11:47:357804: l2-output
l2-output: sw_if_index 3 dst ff:ff:ff:ff:ff:ff src a4:bf:01:89:9d:cf data 08
06 00 01 08 00 06 04 00 01 a4 bf
l2-output: sw_if_index 2 dst ff:ff:ff:ff:ff:ff src a4:bf:01:89:9d:cf data 08
06 00 01 08 00 06 04 00 01 a4 bf
00:11:47:357807: port0/2-output
port0/2
ARP: a4:bf:01:89:9d:cf -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
a4:bf:01:89:9d:cf/30.30.30.6<http://30.30.30.6> ->
01:03:05:07:09:00/30.30.30.6<http://30.30.30.6>
00:11:47:357812: port0/1-output
port0/1
ARP: a4:bf:01:89:9d:cf -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
a4:bf:01:89:9d:cf/30.30.30.6<http://30.30.30.6> ->
01:03:05:07:09:00/30.30.30.6<http://30.30.30.6>
00:11:47:357813: port0/2-tx
port0/2 tx queue 0
buffer 0xfc9fc3: current data 0, length 60, buffer-pool 0, ref-count 1, trace
handle 0x0
ext-hdr-valid
l2-hdr-offset 0 l3-hdr-offset 14
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x180, data_off 128, phys_addr
0x3f27f140
packet_type 0x0 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
ARP: a4:bf:01:89:9d:cf -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
a4:bf:01:89:9d:cf/30.30.30.6<http://30.30.30.6> ->
01:03:05:07:09:00/30.30.30.6<http://30.30.30.6>
00:11:47:357819: error-drop
rx:port0/0
00:11:47:357821: drop
port0/1-output: interface is down
**********************************************************************************************************
with flooding disabled :
vpp# show bridge-domain 100 det
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding
ARP-Term arp-ufwd Learn-co Learn-li BVI-Intf
100 1 0 off on on
flood off off off 1
16777216 N/A
span-l2-input l2-input-classify l2-input-feat-arc l2-policer-classify
l2-input-acl vpath-input-l2 l2-ip-qos-record l2-input-vtr l2-learn l2-rw l2-fwd
l2-flood l2-flood l2-output
Interface If-idx ISN SHG BVI TxFlood
VLAN-Tag-Rewrite
port0/0 1 1 0 - * none
port0/1 2 108 0 - * none
port0/2 3 1 0 - * none
Packet 1
01:01:13:194982: dpdk-input
port0/0 rx queue 0
buffer 0xfc13e9: current data 0, length 1446, buffer-pool 0, ref-count 1,
trace handle 0x0
ext-hdr-valid
PKT MBUF: port 0, nb_segs 1, pkt_len 1446
buf_len 2176, data_len 1446, ol_flags 0x180, data_off 128, phys_addr
0x3f04fac0
packet_type 0x211 l2_len 0 l3_len 0 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_RX_IP_CKSUM_GOOD (0x0080) IP cksum of RX pkt. is valid
PKT_RX_IP_CKSUM_NONE (0x0090) no IP cksum of RX pkt.
PKT_RX_L4_CKSUM_GOOD (0x0100) L4 cksum of RX pkt. is valid
PKT_RX_L4_CKSUM_NONE (0x0108) no L4 cksum of RX pkt.
Packet Types
RTE_PTYPE_L2_ETHER (0x0001) Ethernet packet
RTE_PTYPE_L3_IPV4 (0x0010) IPv4 packet without extension headers
RTE_PTYPE_L4_UDP (0x0200) UDP packet
IP4: a4:bf:01:89:9d:cf -> ab:cd:ef:ab:cd:ef 802.1q vlan 100
UDP: 30.30.30.6 -> 40.40.40.5
tos 0x00, ttl 64, length 1428, checksum 0xe907 dscp CS0 ecn NON_ECN
fragment id 0x0001
UDP: 1025 -> 12
length 1408, checksum 0xfb26
01:01:13:194994: ethernet-input
frame: flags 0x3, hw-if-index 1, sw-if-index 1
IP4: a4:bf:01:89:9d:cf -> ab:cd:ef:ab:cd:ef 802.1q vlan 100
01:01:13:195001: l2-input
l2-input: sw_if_index 1 dst ab:cd:ef:ab:cd:ef src a4:bf:01:89:9d:cf [l2-learn
]
01:01:13:195004: l2-learn
l2-learn: sw_if_index 1 dst ab:cd:ef:ab:cd:ef src a4:bf:01:89:9d:cf bd_index 1
01:01:13:195006: feature-bitmap-drop
feat_bitmap_drop: feature bitmap 0x00000001
01:01:13:195007: error-drop
rx:port0/0
01:01:13:195009: drop
feature-bitmap-drop: L2 feature forwarding disabled
If we disable flooding in a Bridge Domain then will it not forward,broadcast or
multicast any packets .although UU-Flood is enabled.
If you could please explain this.
Thank You
Pragya Nand
On Fri, Jul 22, 2022 at 5:18 PM Stanislav Zaikin
<zsta...@gmail.com<mailto:zsta...@gmail.com>> wrote:
Hi Pragya,
Could you attach a trace?
On Fri, 22 Jul 2022 at 13:14, Pragya Nand Bhagat
<pragya.nand.bhaga...@gmail.com<mailto:pragya.nand.bhaga...@gmail.com>> wrote:
Hi All,
Please have a look on the below issue:
I have attached my conf file.
Or is the bridge-domain functionality broken .
Thanks
Pragya Nand
On Wed, Jul 20, 2022 at 9:57 AM Pragya Nand Bhagat via
lists.fd.io<http://lists.fd.io>
<pragya.nand.bhagat.1=gmail....@lists.fd.io<mailto:gmail....@lists.fd.io>>
wrote:
Hi All,
I'm trying to create a bridge domain and add ports to it for layer 2
functionality.
There are 3 physical ports.
I have used the following commands :
create bridge-domain 100
set interface l2 bridge port0/0 100
set interface l2 bridge port0/1 100
set interface l2 bridge port0/2 100
set bridge-domain flood 100 disable
vpp# show bridge-domain
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding
ARP-Term arp-ufwd Learn-co Learn-li BVI-Intf
100 1 0 off on on
flood off off off 1
16777216 N/A
I have the expectation if I disable flooding on the bridge domain and as
UU-Flood is enabled it'll still flood on all the ports part of bridge domain.
Above is not happening .
Also when I try to add mac in l2fib on port using :
l2fib add 52:54:00:53:18:55 200 port0/0 static
vpp should unicast the packet which is also not happening .
I'm using vpp version 22.06 .
Please suggest how to achieve this or if I missed something .
Thank You
Pragya Nand
--
Best regards
Stanislav Zaikin
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