Ho due schede di rete sul lato server, eth0? 192.168.8.140 ed eth1? 192.168.8.142. Il client invia i dati a 192.168.8.142 e mi aspetto iftop
di mostrare il traffico per eth1, ma non lo è. Tutte le reti passano attraverso eth0, quindi come posso testare le due schede NIC?
Perché tutto il traffico passa attraverso eth0 anziché eth1? Mi aspettavo di ottenere 1 Gbit / s per interfaccia. Cosa c'è di sbagliato nella mia installazione o configurazione?
server
ifconfig
eth0 Link encap:Ethernet HWaddr 00:00:00:19:26:B0
inet addr:192.168.8.140 Bcast:0.0.0.0 Mask:255.255.252.0
inet6 addr: 0000::0000:0000:fe19:26b0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:45287446 errors:0 dropped:123343 overruns:2989 frame:0
TX packets:3907747 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:66881007720 (62.2 GiB) TX bytes:261053436 (248.9 MiB)
Memory:f7e00000-f7efffff
eth1 Link encap:Ethernet HWaddr 00:00:00:19:26:B1
inet addr:192.168.8.142 Bcast:0.0.0.0 Mask:255.255.255.255
inet6 addr: 0000::0000:0000:fe19:26b1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:19358 errors:0 dropped:511 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1772275 (1.6 MiB) TX bytes:1068 (1.0 KiB)
Memory:f7c00000-f7cfffff
Lato server
# Listen for incomming from 192.168.8.142
nc -v -v -n -k -l 192.168.8.142 8000 | pv > /dev/null
Listening on [192.168.8.142] (family 0, port 8000)
Connection from 192.168.8.135 58785 received!
Cliente
# Send to 192.168.8.142
time yes | pv |nc -s 192.168.8.135 -4 -v -v -n 192.168.8.142 8000 >/dev/null
Connection to 192.168.8.142 8000 port [tcp/*] succeeded!
Lato server
$ iftop -i eth0
interface: eth0
IP address is: 192.168.8.140
TX: cumm: 6.34MB peak: 2.31Mb rates: 2.15Mb 2.18Mb 2.11Mb
RX: 2.55GB 955Mb 874Mb 892Mb 872Mb
TOTAL: 2.56GB 958Mb 877Mb 895Mb 874Mb
$ iftop -i eth1
interface: eth1
IP address is: 192.168.8.142
TX: cumm: 0B peak: 0b rates: 0b 0b 0b
RX: 4.51KB 3.49Kb 3.49Kb 2.93Kb 2.25Kb
TOTAL: 4.51KB 3.49Kb 3.49Kb 2.93Kb 2.25Kb
$ ip link show eth0
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 00:00:00:19:26:b0 brd ff:ff:ff:ff:ff:ff
$ ip link show eth1
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP mode DEFAULT group default qlen 1000
link/ether 00:00:00:19:26:b1 brd ff:ff:ff:ff:ff:ff