pgawlowicz
commented
4 months ago Hi, this repository is about the 5G srsRAN-Project, and you are asking about the srsRAN-4G project. Please ask there in the Discussion section, as this is not an issue, but rather a routing misconfiguration.
Eric-Wang738
Issue Description
I installed srsRAN 4G RAN, UE with ZeroMQ by following instruction. https://github.com/s5uishida/build_srsran_4g_zmq_disable_rf_plugins?tab=readme-ov-file#install_libs https://docs.srsran.com/projects/4g/en/latest/app_notes/source/zeromq/source/index.html#zeromq-appnote
Setup Details
With configuraiton file of RAN and UE, I can attach UE to core and tried to ping DN server(192.168.2.2 as iperf3 server) behind the core. enb.conf.txt ue.conf.txt
_root@srsran02:~# ip netns exec ue1 ip a 1: lo: mtu 65536 qdisc noop state DOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
7: tun_srsue: <POINTOPOINT,MULTICAST,NOARP,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UNKNOWN group default qlen 500
link/none
inet 10.4.0.3/24 scope global tun_srsue
valid_lft forever preferred_lft forever
root@srsran02:~# ip netns exec ue1 ping 192.168.2.2 ping: connect: Network is unreachable_
When I specify interface, PING command is stopping there. But I can see ICMP is replied from tcpdump command. root@srsran02:~# ip netns exec ue1 ping -I tun_srsue 192.168.2.2 PING 192.168.2.2 (192.168.2.2) from 10.4.0.3 tun_srsue: 56(84) bytes of data.
root@srsran02:~# ip netns exec ue1 tcpdump -i any tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on any, link-type LINUX_SLL (Linux cooked v1), capture size 262144 bytes 08:30:49.210320 IP 10.4.0.3 > 192.168.2.2: ICMP echo request, id 40445, seq 16, length 64 08:30:49.239230 IP 192.168.2.2 > 10.4.0.3: ICMP echo reply, id 40445, seq 16, length 64 08:30:50.234322 IP 10.4.0.3 > 192.168.2.2: ICMP echo request, id 40445, seq 17, length 64 08:30:50.258347 IP 192.168.2.2 > 10.4.0.3: ICMP echo reply, id 40445, seq 17, length 64 08:30:51.258322 IP 10.4.0.3 > 192.168.2.2: ICMP echo request, id 40445, seq 18, length 64 08:30:51.277286 IP 192.168.2.2 > 10.4.0.3: ICMP echo reply, id 40445, seq 18, length 64 08:30:52.282389 IP 10.4.0.3 > 192.168.2.2: ICMP echo request, id 40445, seq 19, length 64 08:30:52.317507 IP 192.168.2.2 > 10.4.0.3: ICMP echo reply, id 40445, seq 19, length 64
And there is also date counted in UE console trace
---------Signal-----------|-----------------DL-----------------|-----------UL----------- cc pci rsrp pl cfo | mcs snr iter brate bler ta_us | mcs buff brate bler 0 1 62 -62 -206n | 15 139 1.0 890 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -308n | 15 139 1.0 889 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -281n | 15 139 1.0 890 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -210n | 15 139 1.0 889 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -260n | 15 139 1.0 889 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -279n | 15 139 1.0 889 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -276n | 15 139 1.0 890 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -223n | 15 139 1.0 890 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -348n | 15 139 1.0 890 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -232n | 15 139 1.0 889 0% 0.0 | 22 0.0 8.8k 0% 0 1 62 -62 -268n | 15 139 1.0 889 0% 0.0 | 22 0.0 8.8k 0%
But when I execute iperf3 command to connect iperf server, it's showing Network is unreachable whatever I specified source IP or not.
Expected Behavior
It there anything missing in my configuration file to connect iperf server?