Hi all,
I have configured on 2 VPP interfaces IP addresses:
set interface ip address GigabitEthernet0/9/0 10.0.0.2/24
set interface ip address GigabitEthernet0/a/0 192.168.0.126/26 (Network:
192.168.0.64, Broadcast: 192.168.0.127)
When I send to GigabitEthernet0/9/0 interface packet with destination
192.168.0.64 and 192.168.0.127, the GigabitEthernet0/a/0 interface sends an ARP
request.
sendp(iface='eth2', x=Ether(src='02:00:00:00:00:02',
dst='08:00:27:f3:be:f0')/IP(src='10.0.0.1', dst='192.168.0.64'))
sendp(iface='eth2', x=Ether(src='02:00:00:00:00:02',
dst='08:00:27:f3:be:f0')/IP(src='10.0.0.1', dst='192.168.0.125'))
sendp(iface='eth2', x=Ether(src='02:00:00:00:00:02',
dst='08:00:27:f3:be:f0')/IP(src='10.0.0.1', dst='192.168.0.126'))
sendp(iface='eth2', x=Ether(src='02:00:00:00:00:02',
dst='08:00:27:f3:be:f0')/IP(src='10.0.0.1', dst='192.168.0.127'))
sendp(iface='eth2', x=Ether(src='02:00:00:00:00:02',
dst='08:00:27:f3:be:f0')/IP(src='10.0.0.1', dst='192.168.0.128'))
vpp# show trace
------------------- Start of thread 0 vpp_main -------------------
Packet 1
02:34:42:407061: dpdk-input
GigabitEthernet0/9/0 rx queue 0
buffer 0x4ccb: current data 14, length 46, free-list 0, totlen-nifb 0, trace
0x0
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x0, data_off 128, phys_addr 0x79433300
packet_type 0x0
IP4: 02:00:00:00:00:02 -> 08:00:27:f3:be:f0
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.64
tos 0x00, ttl 64, length 20, checksum 0xb000
fragment id 0x0001
02:34:42:407085: ip4-input
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.64
tos 0x00, ttl 64, length 20, checksum 0xb000
fragment id 0x0001
02:34:42:407088: ip4-lookup
fib 0 dpo-idx 1 flow hash: 0x00000000
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.64
tos 0x00, ttl 64, length 20, checksum 0xb000
fragment id 0x0001
02:34:42:407090: ip4-glean
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.64
tos 0x00, ttl 64, length 20, checksum 0xb000
fragment id 0x0001
02:34:42:407093: GigabitEthernet0/a/0-output
GigabitEthernet0/a/0
ARP: 08:00:27:66:b8:57 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
08:00:27:66:b8:57/192.168.0.126 -> 00:00:00:00:00:00/192.168.0.64
02:34:42:407095: error-drop
ip4-glean: ARP requests sent
02:34:42:407096: GigabitEthernet0/a/0-tx
GigabitEthernet0/a/0 tx queue 0
buffer 0x186c6: current data -14, length 42, free-list 0, trace 0x0
ARP: 08:00:27:66:b8:57 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
08:00:27:66:b8:57/192.168.0.126 -> 00:00:00:00:00:00/192.168.0.64
Packet 2
02:34:42:410263: dpdk-input
GigabitEthernet0/9/0 rx queue 0
buffer 0x4ca4: current data 14, length 46, free-list 0, totlen-nifb 0, trace
0x1
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x0, data_off 128, phys_addr 0x79432940
packet_type 0x0
IP4: 02:00:00:00:00:02 -> 08:00:27:f3:be:f0
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.125
tos 0x00, ttl 64, length 20, checksum 0xafc3
fragment id 0x0001
02:34:42:410282: ip4-input
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.125
tos 0x00, ttl 64, length 20, checksum 0xafc3
fragment id 0x0001
02:34:42:410285: ip4-lookup
fib 0 dpo-idx 1 flow hash: 0x00000000
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.125
tos 0x00, ttl 64, length 20, checksum 0xafc3
fragment id 0x0001
02:34:42:410286: ip4-glean
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.125
tos 0x00, ttl 64, length 20, checksum 0xafc3
fragment id 0x0001
02:34:42:410288: GigabitEthernet0/a/0-output
GigabitEthernet0/a/0
ARP: 08:00:27:66:b8:57 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
08:00:27:66:b8:57/192.168.0.126 -> 00:00:00:00:00:00/192.168.0.125
02:34:42:410291: error-drop
ip4-glean: ARP requests sent
02:34:42:410291: GigabitEthernet0/a/0-tx
GigabitEthernet0/a/0 tx queue 0
buffer 0x186ed: current data -14, length 42, free-list 0, trace 0x1
ARP: 08:00:27:66:b8:57 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
08:00:27:66:b8:57/192.168.0.126 -> 00:00:00:00:00:00/192.168.0.125
Packet 3
02:34:42:414134: dpdk-input
GigabitEthernet0/9/0 rx queue 0
buffer 0x4c7d: current data 14, length 46, free-list 0, totlen-nifb 0, trace
0x2
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x0, data_off 128, phys_addr 0x79431f80
packet_type 0x0
IP4: 02:00:00:00:00:02 -> 08:00:27:f3:be:f0
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.126
tos 0x00, ttl 64, length 20, checksum 0xafc2
fragment id 0x0001
02:34:42:414162: ip4-input
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.126
tos 0x00, ttl 64, length 20, checksum 0xafc2
fragment id 0x0001
02:34:42:414165: ip4-lookup
fib 0 dpo-idx 5 flow hash: 0x00000000
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.126
tos 0x00, ttl 64, length 20, checksum 0xafc2
fragment id 0x0001
02:34:42:414167: ip4-local
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.126
tos 0x00, ttl 64, length 20, checksum 0xafc2
fragment id 0x0001
02:34:42:414169: error-punt
ip4-input: unknown ip protocol
Packet 4
02:34:42:417916: dpdk-input
GigabitEthernet0/9/0 rx queue 0
buffer 0x4c56: current data 14, length 46, free-list 0, totlen-nifb 0, trace
0x3
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x0, data_off 128, phys_addr 0x794315c0
packet_type 0x0
IP4: 02:00:00:00:00:02 -> 08:00:27:f3:be:f0
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.127
tos 0x00, ttl 64, length 20, checksum 0xafc1
fragment id 0x0001
02:34:42:417940: ip4-input
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.127
tos 0x00, ttl 64, length 20, checksum 0xafc1
fragment id 0x0001
02:34:42:417943: ip4-lookup
fib 0 dpo-idx 1 flow hash: 0x00000000
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.127
tos 0x00, ttl 64, length 20, checksum 0xafc1
fragment id 0x0001
02:34:42:417945: ip4-glean
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.127
tos 0x00, ttl 64, length 20, checksum 0xafc1
fragment id 0x0001
02:34:42:417947: GigabitEthernet0/a/0-output
GigabitEthernet0/a/0
ARP: 08:00:27:66:b8:57 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
08:00:27:66:b8:57/192.168.0.126 -> 00:00:00:00:00:00/192.168.0.127
02:34:42:417950: error-drop
ip4-glean: ARP requests sent
02:34:42:417951: GigabitEthernet0/a/0-tx
GigabitEthernet0/a/0 tx queue 0
buffer 0x18714: current data -14, length 42, free-list 0, trace 0x3
ARP: 08:00:27:66:b8:57 -> ff:ff:ff:ff:ff:ff
request, type ethernet/IP4, address size 6/4
08:00:27:66:b8:57/192.168.0.126 -> 00:00:00:00:00:00/192.168.0.127
Packet 5
02:34:42:421835: dpdk-input
GigabitEthernet0/9/0 rx queue 0
buffer 0x4c2f: current data 14, length 46, free-list 0, totlen-nifb 0, trace
0x4
PKT MBUF: port 0, nb_segs 1, pkt_len 60
buf_len 2176, data_len 60, ol_flags 0x0, data_off 128, phys_addr 0x79430c00
packet_type 0x0
IP4: 02:00:00:00:00:02 -> 08:00:27:f3:be:f0
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.128
tos 0x00, ttl 64, length 20, checksum 0xafc0
fragment id 0x0001
02:34:42:421851: ip4-input
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.128
tos 0x00, ttl 64, length 20, checksum 0xafc0
fragment id 0x0001
02:34:42:421854: ip4-lookup
fib 0 dpo-idx 0 flow hash: 0x00000000
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.128
tos 0x00, ttl 64, length 20, checksum 0xafc0
fragment id 0x0001
02:34:42:421855: ip4-drop
IP6_HOP_BY_HOP_OPTIONS: 10.0.0.1 -> 192.168.0.128
tos 0x00, ttl 64, length 20, checksum 0xafc0
fragment id 0x0001
02:34:42:421857: error-drop
ip4-input: ip4 adjacency drop
Shouldn't be with set ip address on an interface also added network and
broadcast /32 addresses to the FIB?
Regards,
Matej.
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