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diff --git a/content/tutorial-3.md b/content/tutorial-3.md deleted file mode 100644 index 2dd0645..0000000 --- a/content/tutorial-3.md +++ /dev/null @@ -1,210 +0,0 @@ ---- -title: "Tutorial 3: IPCP statistics" -draft: false ---- - -For this tutorial, you should have a local layer, a normal layer and a -ping server registered in the normal layer. You will need to have the -FUSE libraries installed and Ouroboros compiled with FUSE support. We -will show you how to get some statistics from the network layer which is -exported by the IPCPs at /tmp/ouroboros (this mountpoint can be set at -compile time): - -``` -$ tree /tmp/ouroboros -/tmp/ouroboros/ -|-- ipcpd-normal.13569 -| |-- dt -| | |-- 0 -| | |-- 1 -| | `-- 65 -| `-- lsdb -| |-- 416743497.465922905 -| |-- 465922905.416743497 -| |-- dt.465922905 -| `-- mgmt.465922905 -`-- ipcpd-normal.4363 - |-- dt - | |-- 0 - | |-- 1 - | `-- 65 - `-- lsdb - |-- 416743497.465922905 - |-- 465922905.416743497 - |-- dt.416743497 - `-- mgmt.416743497 - -6 directories, 14 files -``` - -There are two filesystems, one for each normal IPCP. Currently, it shows -information for two components: data transfer and the link-state -database. The data transfer component lists flows on known flow -descriptors. The flow allocator component will usually be on fd 0 and -the directory (DHT). There is a single (N-1) data transfer flow on fd 65 -that the IPCPs can use to send data (these fd's will usually not be the -same). The routing component sees that data transfer flow as two -unidirectional links. It has a management flow and data transfer flow to -its neighbor. Let's have a look at the data transfer flow in the -network: - -``` -$ cat /tmp/ouroboros/ipcpd-normal.13569/dt/65 -Flow established at: 2018-03-07 18:47:43 -Endpoint address: 465922905 -Queued packets (rx): 0 -Queued packets (tx): 0 - -Qos cube 0: - sent (packets): 4 - sent (bytes): 268 - rcvd (packets): 3 - rcvd (bytes): 298 - local sent (packets): 4 - local sent (bytes): 268 - local rcvd (packets): 3 - local rcvd (bytes): 298 - dropped ttl (packets): 0 - dropped ttl (bytes): 0 - failed writes (packets): 0 - failed writes (bytes): 0 - failed nhop (packets): 0 - failed nhop (bytes): 0 - -<no traffic on other qos cubes> -``` - -The above output shows the statistics for the data transfer component of -the IPCP that enrolled into the layer. It shows the time the flow was -established, the endpoint address and the number of packets that are in -the incoming and outgoing queues. Then it lists packet statistics per -QoS cube. It sent 4 packets, and received 3 packets. All the packets -came from local sources (internal components of the IPCP) and were -delivered to local destinations. Let's have a look where they went. - -``` -$ cat /tmp/ouroboros/ipcpd-normal.13569/dt/1 -Flow established at: 2018-03-07 18:47:43 -Endpoint address: flow-allocator -Queued packets (rx): 0 -Queued packets (tx): 0 - -<no packets on this flow> -``` - -There is no traffic on fd 0, which is the flow allocator component. This -will only be used when higher layer applications will use this normal -layer. Let's have a look at fd 1. - -``` -$ cat /tmp/ouroboros/ipcpd-normal.13569/dt/1 -Flow established at: 2018-03-07 18:47:43 -Endpoint address: dht -Queued packets (rx): 0 -Queued packets (tx): 0 - -Qos cube 0: - sent (packets): 3 - sent (bytes): 298 - rcvd (packets): 0 - rcvd (bytes): 0 - local sent (packets): 0 - local sent (bytes): 0 - local rcvd (packets): 6 - local rcvd (bytes): 312 - dropped ttl (packets): 0 - dropped ttl (bytes): 0 - failed writes (packets): 0 - failed writes (bytes): 0 - failed nhop (packets): 2 - failed nhop (bytes): 44 - -<no traffic on other qos cubes> -``` - -The traffic for the directory (DHT) is on fd1. Take note that this is -from the perspective of the data transfer component. The data transfer -component sent 3 packets to the DHT, these are the 3 packets it received -from the data transfer flow. The data transfer component received 6 -packets from the DHT. It only sent 4 on fd 65. 2 packets failed because -of nhop. This is because the forwarding table was being updated from the -routing table. Let's send some traffic to the oping server. - -``` -$ oping -n oping_server -i 0 -Pinging oping_server with 64 bytes of data: - -64 bytes from oping_server: seq=0 time=0.547 ms -... -64 bytes from oping_server: seq=999 time=0.184 ms - ---- oping_server ping statistics --- -1000 SDUs transmitted, 1000 received, 0% packet loss, time: 106.538 ms -rtt min/avg/max/mdev = 0.151/0.299/2.269/0.230 ms -``` - -This sent 1000 packets to the server. Let's have a look at the flow -allocator: - -``` -$ cat /tmp/ouroboros/ipcpd-normal.13569/dt/0 -Flow established at: 2018-03-07 18:47:43 -Endpoint address: flow-allocator -Queued packets (rx): 0 -Queued packets (tx): 0 - -Qos cube 0: - sent (packets): 1 - sent (bytes): 59 - rcvd (packets): 0 - rcvd (bytes): 0 - local sent (packets): 0 - local sent (bytes): 0 - local rcvd (packets): 1 - local rcvd (bytes): 51 - dropped ttl (packets): 0 - dropped ttl (bytes): 0 - failed writes (packets): 0 - failed writes (bytes): 0 - failed nhop (packets): 0 - failed nhop (bytes): 0 - -<no traffic on other qos cubes> -``` - -The flow allocator has sent and received a message: a request and a -response for the flow allocation between the oping client and server. -The data transfer flow will also have additional traffic: - -``` -$ cat /tmp/ouroboros/ipcpd-normal.13569/dt/65 -Flow established at: 2018-03-07 18:47:43 -Endpoint address: 465922905 -Queued packets (rx): 0 -Queued packets (tx): 0 - -Qos cube 0: - sent (packets): 1013 - sent (bytes): 85171 - rcvd (packets): 1014 - rcvd (bytes): 85373 - local sent (packets): 13 - local sent (bytes): 1171 - local rcvd (packets): 14 - local rcvd (bytes): 1373 - dropped ttl (packets): 0 - dropped ttl (bytes): 0 - failed writes (packets): 0 - failed writes (bytes): 0 - failed nhop (packets): 0 - failed nhop (bytes): 0 -``` - -This shows the traffic from the oping application. The additional -traffic (the oping sent 1000, the flow allocator 1 and the DHT -previously sent 3) is additional DHT traffic (the DHT periodically -updates). Also note that the traffic reported on the link includes the -FRCT and data transfer headers which in the default configuration is 20 -bytes per packet. - -This concludes tutorial 3. |