I-m currently testing STP module and I followed the instructions from
http://osrg.github.io/ryu-book/en/html/spanning_tree.html running OF 1.3.
I left STP disabled on ovs, and modified BRIDGE_GROUP_ADDRESS as
instructed.
I see an issue... ping from h2 to h3 goes through the controller all the
time... this can also be proved with iperf:
mininet> iperf h1 h2
*** Iperf: testing TCP bandwidth between h1 and h2
*** Results: ['13.7 Gbits/sec', '13.7 Gbits/sec']
mininet>
mininet>
mininet> iperf h2 h3
*** Iperf: testing TCP bandwidth between h2 and h3
*** Results: ['7.26 Mbits/sec', '8.75 Mbits/sec']
Does anybody know what is wrong? I'm asking before I start debuging in
case someone has figured it out.
Thanks
Pablo.
On 08/03/2014 11:44 PM, Yusuke Iwase wrote:
Hi
On 2014?08?04? 01:47, Sujit Pandey wrote:
Hello,
I am sujit Pandey intern at orange lab. I am doing MPLS implementation and
I am using ryu conroller. I have few question regarding the switch
configuration:
1. the primarily question is how to get host information. I check and tried
with all methods that are applied but I cannot get the host side inteface
information in ryu controller.
2. as you said, the spanning is working but when I tried to the ovs2.3.9
simon horms git it is not working . I tried as with you given in ryubook
tutorial but it is not working. when I tried to ping it goes to continuous
loop.
For Question No.2 ...
If you use the Open vSwitch, the STP app dose not wrok well depending on the
OVS's settings or version.
OVS has the STP implementation, but when this option is disabled (by default),
OVS drops the STP (BPDU) packets with the dest mac address "01:80:c2:00:00:00".
For only executing the STP app, you can avoid this constraint by modifying the
source code as follows.
ryu/ryu/lib/packet/bpdu.py:
---
# BPDU destination
#BRIDGE_GROUP_ADDRESS = '01:80:c2:00:00:00'
BRIDGE_GROUP_ADDRESS = '01:80:c2:00:00:0e'
---
Then, please affect the modification by the following commands.
---
$ cd ryu
$ sudo python setup.py install
running install
...
...
running install_scripts
Installing ryu-manager script to /usr/local/bin
Installing ryu script to /usr/local/bin
---
3. I have to add-flow dynamically(especially mpls flow) and I need to know
the graph and find the shortest path among the nodes.does there is any
mechanism to find the shortest path in ryu and also collectively how to get
information about switch, port, connected link?
I have much trouble on that and I haven't figure out what to do myself. do
you have any idea? please
--
Best regards
Sujit Pandey
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