[Mini-NDN] Links not working

[Navdeep Uniyal]

Hello All,

Pretty strange but suddenly I am facing problems with the link establishment in minindn, below is the snippet. Only few links are getting established while others are not. I tried a few different configurations but everytime I am facing similar problem:



*** Adding hosts:
ca ga ha hb hc sa sb
*** Adding switches:

*** Adding links:
(5.00Mbit 0ms delay) (5.00Mbit 0ms delay) (ca, ga) (1.00Mbit 0ms delay) (1.00Mbit 0ms delay) (ga, ha) (1.00Mbit 0ms delay) (1.00Mbit 0ms delay) (ga, hb) (1.00Mbit 0ms delay) (1.00Mbit 0ms delay) (ga, hc) (1.00Mbit 0ms delay) (1.00Mbit 0ms delay) (ha, sa) (1.00Mbit 20ms delay) (1.00Mbit 20ms delay) (hb, sa) (1.00Mbit 20ms delay) (1.00Mbit 20ms delay) (hb, sb) (1.00Mbit 0ms delay) (1.00Mbit 0ms delay) (hc, sb)
*** Configuring hosts
ca ga ha hb hc sa sb
Setup time: 14
*** Starting controller
c0
*** Starting 0 switches

*** Starting CLI:
mininet> pingall
*** Ping: testing ping reachability
ca -> ga X X X X X
ga -> ca ha hb hc X X
ha -> X X X X sa X
hb -> X X X X X sb
hc -> X X X X X X
sa -> X X X X X X
sb -> X X X X X X
*** Results: 83% dropped (7/42 received)


Below is the configuration file I am using for my experiment:

[nodes]
ca: _
ga: _
ha: _
hb: _
hc: _
sa: _
sb: _
[links]
ca:ga delay=0ms bw=5
ga:ha delay=0ms bw=1
ga:hb delay=0ms bw=1
ga:hc delay=0ms bw=1
ha:sa delay=0ms bw=1
hb:sb delay=20ms bw=1
hb:sa delay=20ms bw=1
hc:sb delay=0ms bw=1



Please if someone can explain and can help me what I might be doing wrong in establishing the connection.


Best Regards,
Navdeep Uniyal

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