Changes between Version 2 and Version 3 of Workshops/Sig Comm2022/Mininet Optical

Timestamp:

Aug 17, 2022, 3:48:26 PM (2 years ago)

Author:

rajag

Comment:

—

Workshops/Sig Comm2022/Mininet Optical

@@ -371 +371 @@
 If you don't have one open already, open up another terminal window with the below instructions: 
 
-=== [WIP] Opening another terminal window in Orbit ===
+== [WIP] Opening another terminal window in Orbit ==
 
 1. SSH into
@@ -397 +397 @@
 All of these configurations can be performed by Python scripts developed to work with the COSMOS test-bed. The Python commands send NETCONF commands to the ROADM.
 
-=== Running the configuration script ===
+== Running the configuration script ==
 
 Run the script with the following command
@@ -404 +404 @@
 }}}
 
-This executes the configuration file which establishes the ground connections first and turns on the transceivers. We walk through this script below to deep dive into what's happening. 
+This executes the configuration file which establishes the ground connections first and turns on the transceivers. 
 
 Mininet-Optical's `Terminal` is the equivalent of the ToR switch
-which contains Ethernet interfaces as well as WDM transceivers.
-
-Instead of using a Cisco-style CLI to configure it, we use its
+which contains Ethernet interfaces as well as WDM transceivers. Instead of using a Cisco-style CLI to configure it, we use its
 default REST API.
 
 As noted above, 194.35 THz corresponds to channel C61 on Mininet-Optical's default 50GHz channel grid. C1's middle frequency is 191350 GHz, so C61 is at 191350 + 60*50 = 194350 GHz.
+
+We walk through this script below to deep dive into what's happening:
 
 1. Connect Ethernet interfaces to Transceivers and set channel
@@ -456 +456 @@
 *** srv1-co1 pinging srv1-lg1
 PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data.
-64 bytes from 192.168.1.2: icmp_seq=1 ttl=64 time=0.932 ms
-64 bytes from 192.168.1.2: icmp_seq=2 ttl=64 time=0.145 ms
-64 bytes from 192.168.1.2: icmp_seq=3 ttl=64 time=0.153 ms
+From 192.168.1.1 icmp_seq=1 Destination Host Unreachable
+From 192.168.1.1 icmp_seq=2 Destination Host Unreachable
+From 192.168.1.1 icmp_seq=3 Destination Host Unreachable
 
 --- 192.168.1.2 ping statistics ---
-3 packets transmitted, 3 received, 0% packet loss, time 2089ms
-rtt min/avg/max/mdev = 0.145/0.410/0.932/0.369 ms
+3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2168ms
 ...
 *** srv1-co1 pinging srv2-lg1
@@ -482 +481 @@
 For this tutorial, we are using NETCONF interface to configure the ROADMs to closely match the interface used in hardware experiment.
 
-=== [WIP] MUX/DEMUX configuration ===
+=== MUX/DEMUX configuration ===
 
 As a reminder, here are the ROADM port numbers:
@@ -510 +509 @@
 Once you perform the base test as described above, the script will prompt you to press `Return` key to perform the test for configuration 1. Before trying the configuration, let's dive into what connections this script will install:
 
-==== Configuring srv1-co1<==>srv1-lg1 Connection 1 on Mininet-Optical using NETCONF ====
+=== Configuring srv1-co1<==>srv1-lg1 Connection 1 on Mininet-Optical using NETCONF ===
 
 
@@ -549 +548 @@
 ----
 
-==== Performing the experiment and results
+=== Performing the experiment and results
 
 Now you can try installing the above lightpaths by yourself. As prompted by the terminal, press `Return` to install the configuration and perform the test. This will establish the connections between ROADMs as described above, which you can also view with the lines printed. 
@@ -593 +592 @@
 In Experiment 2, we are choosing to pass the optical signal through 2 hops (via a pair of 10km fiber spools with the 32km Manhattan dark fiber). This requires us to establish a connection between srv1-co1 and srv2-lg1. Once you perform the experiment 1 as described above, the script will prompt you to press Return key to perform the test for configuration 2. Before trying the configuration, let's dive into what connections this script will install: 
 
-==== Configuring srv1-co1<==>srv2-lg1 connection on Mininet-Optical using NETCONF ====
+=== Configuring srv1-co1<==>srv2-lg1 connection on Mininet-Optical using NETCONF ===
 
 The NETCONF servers for `rdm1-co1` and `rdm1-lg1` are listening on `localhost` at ports 1834 and 1831 as Experiment 1. We are configuring `rdm2-lg1' and 'rdm2-co1` to listen at ports 1832 and 1833 respectively. 
@@ -657 +656 @@
 }}}
 ----
-==== Performing Experiment 2 and Results
+=== Performing Experiment 2 and Results
 
 Now you can try installing the above lightpaths for Experiment 2 by yourself. As prompted by the terminal, press `Return` to install the configuration and perform the test. This will establish the connections between ROADMs as described above, which you can also view with the lines printed. 
@@ -692 +691 @@
 As expected, srv1-co1 and srv2-lg1 are able to ping each other because we established the ROADM rules for long-hop configuration. Consequently, as opposed to Experiment 1, srv1-co1 and srv1-lg1 are not able to ping each other because no such connection is established yet.
 
-Note that the average ping time for srv1-co1 to srv2-lg1 is 0.675 ms, and the average ping time for srv1-co1 to srv1-lg1 in Experiment 1 was 0.339 ms. Observe the slightly longer RTT to `srv2-lg1`, reflecting the increased propagation time across two 32km fibers to reach the "Central Cloud" data center.
+Note that the average ping time for srv1-co1 to srv2-lg1 is 0.675 ms, and the average ping time for srv1-co1 to srv1-lg1 in Experiment 1 is 0.339 ms. Observe the slightly longer RTT to `srv2-lg1`, reflecting the increased propagation time across two 32km fibers to reach the "Central Cloud" data center.
 
 = Shutting down Mininet-Optical =