[USRP-users] X310 with DPDK

Marcus D. Leech patchvonbraun at gmail.com
Tue Jul 21 12:00:06 EDT 2020

On 07/21/2020 10:53 AM, Carmichael, Ryan via USRP-users wrote:
> On the DPDK page (https://files.ettus.com/manual/page_dpdk.html) the 
> following statement is made:
> “Device discovery via DPDK is not currently implemented, so the device 
> args |mgmt_addr|, |addr|, and |second_addr| (if applicable) must all 
> be specified at runtime. There is no mechanism for MPM's TCP/IP 
> control traffic to flow over a link that is occupied by DPDK, so 
> mgmt_addr must point to a link that is not used for CHDR, such as 
> N310's RJ45 port.”
> I’ve been using the X310 without DPDK with dual 10Gb SPI/SFP+ 
> connections (, Once I start DPDK, ifconfig 
> no longer shows the NICs at all, which I assume is what it is supposed 
> to be doing. My question is, what is the ‘mgmt_addr’ ? I’ve never used 
> it before when using the X310. And how do I make sure the mgmt_addr 
> isn’t using a CHDR link? The X310 only has two RJ45s, right – and 
> they’re both being used by DPDK.
> Thanks,
> -Ryan
/Actualy the X310 has two *SFP+* connections, and an RJ-45 connection.  
Now, on yours, you may have put SFP+ to RJ-45 adaptors on, but
   natively they're SFP+.   The single RJ-45 connector is the 
"management port"--which can also support data transfer at lower speeds.

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