[USRP-users] cannot ping

Leandro Echevarría leoechevarria at gmail.com
Tue Oct 3 09:01:02 EDT 2017


Seah, are you saying that you're trying to get a wireless link working
between both USRP devices? If that is the case, and you are not
implementing a full protocol and handshaking between them in the RF domain,
they will not behave as intended (i.e., as a pair of wireless CPEs, such as
Ubiquiti Nanostations, to give an example).

On Tue, Oct 3, 2017 at 8:59 AM Marcus Müller via USRP-users <
usrp-users at lists.ettus.com> wrote:

> Sorry, I still don't understand – what circle are we talking about?
>
> On 03.10.2017 06:50, seah chong wrote:
>
> sorry about that, the coverage networking is weak. IP Address PC A is
> 192.168.10.1 netmask 255.255.255.0. what i means with Omnidirectional is
> actually the communication between the USRP  is propagate within the circle.
>
> On Fri, Sep 29, 2017 at 11:31 AM, seah chong <seahchong12 at gmail.com>
> wrote:
>
>> hi
>> the computer connected to the device of USRP N210 using Communication
>> System Toolbox Support Packages. the device  connected using the ethernet
>> Cable. The first and second  USRP will communicate within omnidirectional.
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *>> findsdru Checking radio connections... ans =      Platform:
>> 'N200/N210/USRP2'     IPAddress: '192.168.10.2'     SerialNum: 'F5E4FF'*
>> *        Status: 'Success'*
>>
>> Both USRP N210 are successfully connected to the PC but unable
>> to communicate to each other.
>> I also try ip route get
>>
>>
>>
>>
>> *root at seah-Precision-T1700:~# ip route get 192.168.20.2 192.168.20.2 via
>> 20.20.20.20 dev wlan1  src 20.20.20.103     cache
>> root at seah-Precision-T1700:~# ip route add 192.168.20.2 via 20.20.20.20*
>>
>>
>>
>>
>>
>>
>>
>>
>> *root at seah-Precision-T1700:~# route -n Kernel IP routing table
>> Destination     Gateway         Genmask         Flags Metric Ref    Use
>> Iface 0.0.0.0         20.20.20.20     0.0.0.0         UG    0      0
>> 0 wlan1 20.20.20.0      0.0.0.0         255.255.255.0   U     9
>> 0        0 wlan1 192.168.10.0    0.0.0.0         255.255.255.0   U
>> 0      0        0 eth0 192.168.20.2    20.20.20.20     255.255.255.255
>> UGH   0      0        0 wlan1 *
>>
>>
>>
>>
>>
>>
>>
>>
>>
>> *root at seah-Precision-T1700:~# ping 192.168.20.2 PING 192.168.20.2
>> (192.168.20.2) 56(84) bytes of data. ^C --- 192.168.20.2 ping statistics
>> --- 17 packets transmitted, 0 received, 100% packet loss, time 16128ms
>> root at seah-Precision-T1700:~# ping 20.20.20.20 PING 20.20.20.20
>> (20.20.20.20) 56(84) bytes of data. 64 bytes from **20.20.20.20*
>> <http://20.20.20.20/>
>> *: icmp_seq=1 ttl=64 time=149 ms 64 bytes from **20.20.20.20*
>> <http://20.20.20.20/>
>> *: icmp_seq=3 ttl=64 time=160 ms 64 bytes from **20.20.20.20*
>> <http://20.20.20.20/>
>>
>>
>>
>> *: icmp_seq=4 ttl=64 time=0.899 ms ^C --- 20.20.20.20 ping statistics ---
>> 4 packets transmitted, 3 received, 25% packet loss, time 3002ms rtt
>> min/avg/max/mdev = 0.899/103.625/160.323/72.769 ms*
>>
>>
>> *  I attach figure  how the computer connected. I hope someone can
>> enlighten me and can give me the solutions. *
>>
>> Regards,
>>
>> ChongSeah
>>
>>
>>
>> <https://mail.google.com/mail/?ui=2&ik=3bd8e0bae3&view=att&th=15ecbad4df75fc18&attid=0.1&disp=safe&realattid=f_j85c79vy0&zw>
>>
>> On Wed, Sep 27, 2017 at 1:30 PM, seah chong <seahchong12 at gmail.com>
>> wrote:
>>
>>> hi
>>> the computer connected to the device of USRP N210 using Communication
>>> System Toolbox Support Packages. the device  connected using the ethernet
>>> Cable. The first and second  USRP will communicate within omnidirectional.
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>>
>>> *>> findsdru Checking radio connections... ans =      Platform:
>>> 'N200/N210/USRP2'     IPAddress: '192.168.10.2'     SerialNum: 'F5E4FF'*
>>> *        Status: 'Success'*
>>>
>>> Both USRP N210 are successfully connected to the PC but unable
>>> to communicate to each other.
>>>
>>>
>>>
>>> * I hope someone can enlighten me and can give me the solutions. *
>>>
>>> Regards,
>>>
>>> ChongSeah
>>>
>>>
>>> On Tue, Sep 26, 2017 at 9:14 PM, Leandro Echevarría <
>>> leoechevarria at gmail.com> wrote:
>>>
>>>> Hello ChongSeah,
>>>>
>>>> Can you explain a little more about what your network configuration
>>>> looks like? Maybe a drawing of all the network interfaces with their
>>>> respective IPs and subnet masks may help us understand the problem better.
>>>>
>>>> How are the computers connected? And how are the N210s connected to
>>>> them?
>>>>
>>>> Regards,
>>>>
>>>> Leo.
>>>>
>>>> On Tue, Sep 26, 2017 at 6:00 AM seah chong via USRP-users <
>>>> usrp-users at lists.ettus.com> wrote:
>>>>
>>>>> hi all,
>>>>>
>>>>> i have two Pc with device USRP N210. At PC A the IP address
>>>>> "192.168.10.1 netmask 255.255.255.0 and at PC B  the IP address
>>>>> "192.168.20.1 netmask 255.255.255.0.
>>>>> i also route add at the PC A using ip route add 192.168.20.0/24 via
>>>>> 192.168.10.2 and at the PC B using ip route add 192.168.10.0/24 via
>>>>> 192.168.20.2.But i cannot ping to PC B and same too goes to PC A.
>>>>>
>>>>>
>>>>> the error comes out like below
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> *root at seah-Precision-T1700:~# ping 192.168.20.2 PING 192.168.20.2
>>>>> (192.168.20.2) 56(84) bytes of data. ^C --- 192.168.20.2 ping statistics
>>>>> --- 3 packets transmitted, 0 received, 100% packet loss, time 2016ms*
>>>>>
>>>>> I hope someone can enlighten me and can give me the solutions.
>>>>>
>>>>>
>>>>> Regards,
>>>>>
>>>>> ChongSeah
>>>>>
>>>>> _______________________________________________
>>>>> USRP-users mailing list
>>>>> USRP-users at lists.ettus.com
>>>>> http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
>>>>>
>>>>
>>>
>>
>
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