Hi Marcus,
Could you please help on this?I find some confusing information on MTU
configuration in different ettus web
pages:https://files.ettus.com/manual/page_transport.html : MTU=8000 for 10GigE
https://kb.ettus.com/USRP_Host_Performance_Tuning_Tips_and_Tricks : MTU=9000
for 10GigE
Which one is correct? :
Thanks.
On Monday, 6 September 2021, 22:33:35 BST, zhou via USRP-users
<[email protected]> wrote:
Hi,
I have a problem with the N321 USRP. I find packet droppedin USRP but not in
host. In host, I am running Ubuntu 18.04.
Below is the ifconfig result in N321:
root@ni-n3xx-320CAAB:~# ifconfig
eth0 Linkencap:Ethernet HWaddr 00:80:2F:32:36:BA
inetaddr:192.168.10.165 Bcast:192.168.255.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RXpackets:618374 errors:0 dropped:11485 overruns:0 frame:0
TXpackets:193714 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:39776733 (37.9 MiB) TX bytes:14546432 (13.8 MiB)
Interrupt:27 Base address:0xb000
int0 Link encap:Ethernet HWaddr AE:CD:BA:E1:CF:96
inetaddr:169.254.0.1 Bcast:169.254.0.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:9000 Metric:1
RXpackets:456 errors:0 dropped:0 overruns:0 frame:0
TXpackets:15 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:37392 (36.5 KiB) TX bytes:2770 (2.7 KiB)
lo Linkencap:Local Loopback
inetaddr:127.0.0.1 Mask:255.0.0.0
UPLOOPBACK RUNNING MTU:65536 Metric:1
RXpackets:89 errors:0 dropped:0 overruns:0 frame:0
TXpackets:89 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:7480 (7.3 KiB) TX bytes:7480 (7.3 KiB)
sfp0 Linkencap:Ethernet HWaddr 00:80:2F:32:36:BB
inetaddr:192.168.12.2 Bcast:192.168.12.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:9000 Metric:1
RXpackets:6239 errors:0 dropped:804 overruns:0frame:0
TXpackets:5669 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:18466697 (17.6 MiB) TX bytes:18417536 (17.5 MiB)
sfp1 Linkencap:Ethernet HWaddr 00:80:2F:32:36:BC
inetaddr:192.168.13.2 Bcast:192.168.13.255 Mask:255.255.255.0
UPBROADCAST RUNNING MULTICAST MTU:9000 Metric:1
RXpackets:24868 errors:0 dropped:796 overruns:0 frame:0
TXpackets:24613 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RXbytes:20486915 (19.5 MiB) TX bytes:19611643 (18.7 MiB)
Below is ifconfig result in host:
user@USRP-SERVER:~$ ifconfig
eno1:flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet192.168.10.143 netmask 255.255.255.0 broadcast 192.168.255.255
inet6fe80::b27b:25ff:fe1d:9e4e prefixlen 64 scopeid 0x20<link>
etherb0:7b:25:1d:9e:4e txqueuelen 1000 (Ethernet)
RX packets5604 bytes 416435 (416.4 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets404 bytes 68556 (68.5 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt16 memory 0xd2100000-d2120000
enp1s0f0:flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
inet192.168.12.1 netmask 255.255.255.0 broadcast 192.168.12.255
inet6fe80::faf2:1eff:fe42:dddc prefixlen 64 scopeid 0x20<link>
etherf8:f2:1e:42:dd:dc txqueuelen 1000 (Ethernet)
RX packets294 bytes 35184 (35.1 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets395 bytes 37148 (37.1 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
enp1s0f1:flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 9000
inet192.168.13.1 netmask 255.255.255.0 broadcast 192.168.13.255
inet6fe80::faf2:1eff:fe42:dddd prefixlen 64 scopeid 0x20<link>
etherf8:f2:1e:42:dd:dd txqueuelen 1000 (Ethernet)
RX packets9 bytes 2228 (2.2 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets72 bytes 7983 (7.9 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 21071 bytes 1497110 (1.4 MB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets21071 bytes 1497110 (1.4 MB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
Could you please let me know what is the possible reason forpacket drop in
USRP? How to fix it?
Thanks for any inputs.
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