USRP on Switch

GNU Radio
1

Hi all
i have 2 USRP N210 connected via switch i want to make cognitive network
on USRP’s, for this i needmultipleUSRP’sconnection, iimplemented 2X MIMO
connection but there is allot of delay on slave USRP.
software specs :
linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-34-stable

– UHD Device 0

Device Address:
type: usrp2
addr: 192.168.10.3
name:
serial: E1R12VBNW

– UHD Device 1

Device Address:
type: usrp2
addr: 192.168.10.2
name:
serial: E1R12VCNW

Dose any one know how to configure UHD sink block formultipleUSRP’s
connection;

i have got fallowing error…

Error :

Using Volk machine: sse4_2_32
Registered event listener change listener: true
LSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSL

Thanks

Regards
Muhammad Junaid
[email protected]

2

Dose any one know how to configure UHD sink block for multiple USRP’s
connection;

i have got fallowing error…

Error :

Using Volk machine: sse4_2_32
Registered event listener change listener: true
LSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSL

S = sequence error or dropped transmit packet, L = late transmit packet
However, the FPGA could also interpret junk packets as being late or
sequence errors as well. So it depends on what is really happening.

Switches can sometimes be problematic. I have have very good luck with
those little blue netgear switches. Can I recommend:

  1. Ensure you can successfully use one USRP with the switch
  2. Ensure the switch is 1 gigE supporting (obviously)
  3. Also make sure that total bandwidth < 1gigE, because 2 USRP N210 at
    full rate can exceed gigE bandwidth easily

-josh

3

Hi all

i have 2 USRP N210 connected via switch i want to make cognitive network
on USRP’s, for this i needmultipleUSRP’sconnection, iimplemented 2X MIMO
connection but there is allot of delay on slave USRP.
software specs :
GNU Radio 3.6.2
linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.002-34-stable

– UHD Device 0

Device Address:
type: usrp2
addr: 192.168.10.3
name:
serial: E1R12VBNW

– UHD Device 1

Device Address:
type: usrp2
addr: 192.168.10.2
name:
serial: E1R12VCNW

Dose any one know how to configure UHD sink block formultipleUSRP’s
connection;

i have got fallowing error…

Error :

Using Volk machine: sse4_2_32
Registered event listener change listener: true
LSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSL

Thanks

Regards
Muhammad Junaid
[email protected]

4

Josh B. wrote in post #1076414:

Dose any one know how to configure UHD sink block for multiple USRP’s
connection;

i have got fallowing error…

Error :

Using Volk machine: sse4_2_32
Registered event listener change listener: true
LSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSLSSL

S = sequence error or dropped transmit packet, L = late transmit packet
However, the FPGA could also interpret junk packets as being late or
sequence errors as well. So it depends on what is really happening.

Switches can sometimes be problematic. I have have very good luck with
those little blue netgear switches. Can I recommend:

  1. Ensure you can successfully use one USRP with the switch
  2. Ensure the switch is 1 gigE supporting (obviously)
  3. Also make sure that total bandwidth < 1gigE, because 2 USRP N210 at
    full rate can exceed gigE bandwidth easily

-josh

Hi josh

Thanks for answering.

i had connected the same hardware i mean same switch and USRP’s N210
successfully on LabVIEW.

Single USRP N210 also work perfect with switch, the error comes when i
call two USRP sinks in GRC.