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RE: [Xen-users] network connectivity problem





James Harper wrote:
> 
>> 
>> [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*"
>> ssh: connect to host xentry21 port 22: No route to host
>> [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*"
>> ssh: connect to host xentry21 port 22: No route to host
>> [root@hadoop1 hadoop-0.18.3]# ssh xentry21 "rm -rf /opt/tmp/*"
>> [root@hadoop1 hadoop-0.18.3]# bin/hadoop namenode -format
>> 
>> 
>> first when i tried to ssh xentry21 it shows 'no route to host'.When i
> try
>> this two more time it works.Why this happens?.I have 3 physcical
> machines
>> and 2 virtual machines in each.And this happens randomly in any of the
>> virtual machines.
> 
> That's the sort of behaviour I would expect if you had duplicate MAC
> addresses or other ARP related problems. Does a ping also give you
> similar behaviour?
> 
> When you do 'brctl showmacs <name of bridge device>' do the MAC
> addresses match against the number of the port as listed by 'brctl
> show'? (I think port numbers are 1 based).
> 
> James
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
> 
> 


Yes, the ping also gives the same behavior.

[root@hadoop1 Documents]# brctl show macs xenbr0
bridge name     bridge id               STP enabled     interfaces
eth0            8000.001ec9cf964d       no              peth0
                                                        vif1.0
virbr0          8000.000000000000       no
[root@hadoop1 Documents]# brctl show 
bridge name     bridge id               STP enabled     interfaces
eth0            8000.001ec9cf964d       no              peth0
                                                        vif1.0
virbr0          8000.000000000000       no

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