Hi Nikos, I tried to comment out the compression attribute in config file. The test result is very close to the tun's TX. I think the behavior of my end is caused by downloading an easy compressible file that comes from a speed testing website. That make sense I have ten-fold of the value comparing to the log. Thanks a lot. BTW, I'm curious about the client side when I have previous exercise. What is the actual byte the client received when the server send a compress data? In my previous case, is the client actually receive 1.64MB from server? John >On Sat, Feb 24, 2018 at 6:42 PM, Chang John <jonny at livemail.tw> wrote: >> Hi, >> >> I've found a behavior that the reported stats of bytes_out from worker may not match the actual reading from tun interface. >> >> A simple example is mentioned below: >> You can find the TX? reported from occtl is 17672025 (17.7 MB)? which is match the vpns0 interface. >> But the value of tx from the ocserv log is only 1642481 (1.64 MB), it is ten times less than the reading from vpns0. >> Is it normal? > >Hi, > >?Your example below shows an compressed connection. That means that >the data transferred on the wire are less than the data received by >the tun device. The ten-fold value is interesting, though you may want >to try without compression to figure whether there is an issue or not. > > >> Terminal log: >> =============================================================================== >> root at 01:~# occtl show user tester4_55 && ifconfig vpns0 && occtl disconnect user tester4_55 >>???????? ID: 20927 >>???????? Username: tester4_55?? Groupname: (none) >>???????? State: connected >>???????? Device: vpns0?? MTU: 1342 >>???????? Remote IP: 11.22.33.44?? Location: >>???????? Local Device IP: 10.140.0.2 >>???????? IPv4: 192.168.1.237?? P-t-P IPv4: 192.168.1.1 >>???????? User-Agent: Cisco AnyConnect VPN Agent for Apple iPhone 4.6.00122 / iPhone1 >>???????? RX: 245575 (245.6 KB)?? TX: 17672025 (17.7 MB) >>???????? Average bandwidth RX: 2.2 KB/sec? TX: 159.2 KB/sec >>???????? DPD: 90?? KeepAlive: 32400 >>???????? Hostname: iPhone >>???????? Connected at: 2018-02-24 23:34 ( 1m:51s) >>???????? Session: TZT+MM >>???????? TLS ciphersuite: (TLS1.2)-(ECDHE-RSA-SECP521R1)-(AES-128-GCM) >>???????? DTLS cipher: (DTLS0.9)-(RSA)-(AES-128-CBC)-(SHA1) >>???????? CSTP compression: lzs?? DTLS compression: lzs >> >>???????? DNS: 8.8.8.8 >>???????????????? 8.8.4.4 >>???????? Routes: defaultroute >>???????? Restricted to routes: False >> >> vpns0???? Link encap:UNSPEC? HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00 >>?????????? inet addr:192.168.1.1? P-t-P:192.168.1.237? Mask:255.255.255.255 >>?????????? UP POINTOPOINT RUNNING? MTU:1342? Metric:1 >>?????????? RX packets:4217 errors:0 dropped:0 overruns:0 frame:0 >>?????????? TX packets:13238 errors:0 dropped:0 overruns:0 carrier:0 >>?????????? collisions:0 txqueuelen:500 >>?????????? RX bytes:245575 (245.5 KB)? TX bytes:17672025 (17.6 MB) >> > >regards, >Nikos