It’s the MTU on the host-side interface that you need to set to 9000, which looks to be correct on the node associated with x310-1 (iface eno2
in this case).
root@ota-x310-1-gnb1:~# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eno1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether e4:43:4b:61:05:ba brd ff:ff:ff:ff:ff:ff
altname enp24s0f0
inet 155.98.37.214/22 metric 1024 brd 155.98.39.255 scope global eno1
valid_lft forever preferred_lft forever
inet6 fe80::e643:4bff:fe61:5ba/64 scope link
valid_lft forever preferred_lft forever
3: eno3: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether e4:43:4b:61:05:da brd ff:ff:ff:ff:ff:ff
altname enp1s0f0
4: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 qdisc mq state UP group default qlen 1000
link/ether e4:43:4b:61:05:bc brd ff:ff:ff:ff:ff:ff
altname enp24s0f1
inet 192.168.40.10/24 brd 192.168.40.255 scope global eno2
valid_lft forever preferred_lft forever
inet6 fe80::e643:4bff:fe61:5bc/64 scope link
valid_lft forever preferred_lft forever
5: eno4: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether e4:43:4b:61:05:db brd ff:ff:ff:ff:ff:ff
altname enp1s0f1
6: enp134s0f0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
link/ether f8:f2:1e:4d:27:b0 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.10/24 brd 192.168.1.255 scope global enp134s0f0
valid_lft forever preferred_lft forever
inet6 fe80::faf2:1eff:fe4d:27b0/64 scope link
valid_lft forever preferred_lft forever
7: enp134s0f1: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000
link/ether f8:f2:1e:4d:27:b1 brd ff:ff:ff:ff:ff:ff
I don’t see the warning about MTU in the output of uhd_usrp_probe
there. Make sure that the same is true on node associated with x310-2 and you should be fine.
-Dustin
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Ah.. I misread. Let me look again..
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Something very strange is going on here. Somehow I think all of your d740s are connected to x310-1. I confirmed this by using uhd_find_devices on each of the nodes:
root@ota-x310-1-gnb1:~# uhd_find_devices
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; UHD_4.7.0.0-0ubuntu1~jammy1
--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
serial: 3176D9A
addr: 192.168.40.2
fpga: XG
name:
product: X310
type: x300
root@ota-x310-2-gnb2:/local/repository# uhd_find_devices
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; UHD_4.7.0.0-0ubuntu1~jammy1
--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
serial: 3176D9A
addr: 192.168.40.2
fpga: XG
name:
product: X310
type: x300
root@ota-x310-3-gnb3:~# uhd_find_devices
[INFO] [UHD] linux; GNU C++ version 11.4.0; Boost_107400; UHD_4.7.0.0-0ubuntu1~jammy1
--------------------------------------------------
-- UHD Device 0
--------------------------------------------------
Device Address:
serial: 3176D9A
addr: 192.168.40.2
fpga: XG
name:
product: X310
type: x300
Note that serial number is the same across the nodes. I think this would explain the other issue you noticed. I’d go through your profile and look for errors in the networking setup.
I suppose this could be a platform issue, but I kind of doubt it. Maybe other POWDER staff can chime in.
-Dustin
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Hmm. The MTUs were not correctly set in this new experiment. I set them appropriately and it is working as expected.
I have a hunch about what is happening in the other version of the profile as well. Do me a favor and change your profile to set all sdr ifaces on the nodes to 192.168.40.1. Looks like you changed those for some reason, but I don’t think that is necessary.
-Dustin
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