I have created a bridge domain with three interface. host-interface, and two physical interface (sriov VF).
BD-ID Index BSN Age(min) Learning U-Forwrd UU-Flood Flooding ARP-Term arp-ufwd BVI-Intf
20 1 0 off on on flood on off off N/A
Interface If-idx ISN SHG BVI TxFlood VLAN-Tag-Rewrite
Two network traffic is coming from application POD to host-inteface (10.42.x.x ) and 10.32.x.x. The 10.32.x.x trafiic works well which passes through eth0. But for 10.42.x.x traffic also passing through eth0-output. so ping is not working for 10.42.x.x network.
vpp# sh trace
Limiting display to 50 packets. To display more specify max.
------------------- Start of thread 0 vpp_main -------------------
Packet 1
02:09:36:193834: af-packet-input
af_packet: hw_if_index 3 next-index 4
tpacket2_hdr:
status 0x20000009 len 55 snaplen 55 mac 66 net 80
sec 0x64172af6 nsec 0x47a18f6 vlan 0 vlan_tpid 0
02:09:36:193837: ethernet-input
IP4: 2e:5d:06:ef:df:f0 -> 6e:a7:f1:e0:39:bc
02:09:36:193838: l2-input
l2-input: sw_if_index 3 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0
02:09:36:193840: l2-learn
l2-learn: sw_if_index 3 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0 bd_index 1
02:09:36:193842: l2-fwd
l2-fwd: sw_if_index 3 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0 bd_index 1 result [0x36a0000000001, 1] none
02:09:36:193844: l2-output
l2-output: sw_if_index 1 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0 data 08 00 45 00 00 29 0c 0c 40 00 40 11
02:09:36:193844: eth0-output
eth0
IP4: 2e:5d:06:ef:df:f0 -> 6e:a7:f1:e0:39:bc
UDP: 10.22.119.38 -> 10.32.31.4
tos 0x00, ttl 64, length 41, checksum 0x8458 dscp CS0 ecn NON_ECN
fragment id 0x0c0c, flags DONT_FRAGMENT
UDP: 12001 -> 2900
length 21, checksum 0x0000
02:09:36:193846: eth0-tx
eth0 tx queue 0
buffer 0xfd7be6: current data 0, length 55, buffer-pool 0, ref-count 1, totlen-nifb 0, trace handle 0x0
ip4 offload-udp-cksum l2-hdr-offset 0 l3-hdr-offset 14
PKT MBUF: port 65535, nb_segs 1, pkt_len 55
buf_len 2176, data_len 55, ol_flags 0xb0000000000000, data_off 128, phys_addr 0x3f5efa00
packet_type 0x0 l2_len 14 l3_len 20 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_TX_TCP_CKSUM (0x0000) TCP cksum of TX pkt. computed by NIC
PKT_TX_SCTP_CKSUM (0x0000) SCTP cksum of TX pkt. computed by NIC
IP4: 2e:5d:06:ef:df:f0 -> 6e:a7:f1:e0:39:bc
UDP: 10.22.119.38 -> 10.32.31.4
tos 0x00, ttl 64, length 41, checksum 0x8458 dscp CS0 ecn NON_ECN
fragment id 0x0c0c, flags DONT_FRAGMENT
UDP: 12001 -> 2900
length 21, checksum 0xaa86
Packet 2
02:09:39:234444: af-packet-input
af_packet: hw_if_index 3 next-index 4
tpacket2_hdr:
status 0x20000009 len 55 snaplen 55 mac 66 net 80
sec 0x64172af9 nsec 0x6e5780a vlan 0 vlan_tpid 0
02:09:39:234446: ethernet-input
IP4: 2e:5d:06:ef:df:f0 -> 6e:a7:f1:e0:39:bc
02:09:39:234447: l2-input
l2-input: sw_if_index 3 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0
02:09:39:234448: l2-learn
l2-learn: sw_if_index 3 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0 bd_index 1
02:09:39:234448: l2-fwd
l2-fwd: sw_if_index 3 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0 bd_index 1 result [0x36a0000000001, 1] none
02:09:39:234450: l2-output
l2-output: sw_if_index 1 dst 6e:a7:f1:e0:39:bc src 2e:5d:06:ef:df:f0 data 08 00 45 00 00 29 0d 47 40 00 40 11
02:09:39:234450: eth0-output
eth0
IP4: 2e:5d:06:ef:df:f0 -> 6e:a7:f1:e0:39:bc
UDP: 10.22.119.38 -> 10.32.31.4
tos 0x00, ttl 64, length 41, checksum 0x831d dscp CS0 ecn NON_ECN
fragment id 0x0d47, flags DONT_FRAGMENT
UDP: 12001 -> 2900
length 21, checksum 0x0000
02:09:39:234451: eth0-tx
eth0 tx queue 0
buffer 0xff638d: current data 0, length 55, buffer-pool 0, ref-count 1, totlen-nifb 0, trace handle 0x1
ip4 offload-udp-cksum l2-hdr-offset 0 l3-hdr-offset 14
PKT MBUF: port 65535, nb_segs 1, pkt_len 55
buf_len 2176, data_len 55, ol_flags 0xb0000000000000, data_off 128, phys_addr 0x3fd8e3c0
packet_type 0x0 l2_len 14 l3_len 20 outer_l2_len 0 outer_l3_len 0
rss 0x0 fdir.hi 0x0 fdir.lo 0x0
Packet Offload Flags
PKT_TX_TCP_CKSUM (0x0000) TCP cksum of TX pkt. computed by NIC
PKT_TX_SCTP_CKSUM (0x0000) SCTP cksum of TX pkt. computed by NIC
IP4: 2e:5d:06:ef:df:f0 -> 6e:a7:f1:e0:39:bc
UDP: 10.22.119.38 -> 10.32.31.4
tos 0x00, ttl 64, length 41, checksum 0x831d dscp CS0 ecn NON_ECN
fragment id 0x0d47, flags DONT_FRAGMENT
UDP: 12001 -> 2900
length 21, checksum 0xaa86
When eth0 interface shutdown then ping for 10.42.x.x works fine. Can you pl explain why 10.42.x.x traffic only tx through eth0 only/
Thanks,
Praveen
