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mTCP: A Highly Scalable User-level TCP Stack for Multicore Systems
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No route to 10.10.10.222 from epwget #9

Closed kcmohanprasad closed 9 years ago

kcmohanprasad commented 9 years ago

Hi,

I am getting No route to epserver in epwget client. I am using the below route.conf and arp.conf. Please do let know of I have done anything wrong

route.conf

ROUTES 1 10.10.10.222/32 port0

arp.conf

ARP_ENTRY 1 10.10.10.222/32 00:0c:29:74:12:9a

This is the error in epwget client

[mtcp_create_context:1352] CPU 0 is in charge of printing stats. [GetOutputInterface: 28] [WARNING] No route to 10.10.10.222 CPU 1: initialization finished. [GetOutputInterface: 28] [WARNING] No route to 10.10.10.222 Thread 1 handles 5000 flows. connecting to 10.10.10.222:80 [GetOutputInterface: 28] [WARNING] No route to 10.10.10.222

Thanks, Mohan

ajamshed commented 9 years ago

This question was answered via email.

Fierralin commented 8 years ago

I cannot find this issue's maillist. What should I do? I meet this problem too.

ajamshed commented 8 years ago

Can you please post your interface settings here (for both sides)? Client & Server (both): IP addresses? arp.conf entries? route.conf entries?

Fierralin commented 8 years ago

I finally found that the two machines was not connected together. I have to config IB net firstly. Thanks, Fierralin

apassi99 commented 8 years ago

Hey facing the same issue. I tried running 1) ./epwget 10.0.0.43/example.txt 10000000 -N 8 -c 8000 2) ./epwget http://i.imgur.com/mgyXgnv.png 10000000 -N 8 -c 8000

For 1) I believe 10.0.0.43 is not hosted any more as I couldn't ping that IP either?

and 2) I get this error -

Configuration updated by mtcp_setconf(). [dpdk_init_handle: 211] Can't open /dev/dpdk-iface for context->cpu: 4! Are you using mlx4/mlx5 driver? CPU 4: initialization finished. [mtcp_create_context:1200] CPU 4 is now the master thread. [GetOutputInterface: 28] [WARNING] No route to 255.255.255.255 [dpdk_init_handle: 211] Can't open /dev/dpdk-iface for context->cpu: 5! Are you using mlx4/mlx5 driver? CPU 5: initialization finished. [GetOutputInterface: 28] [WARNING] No route to 255.255.255.255 Thread 4 handles 1250000 flows. connecting to 255.255.255.255:80 [dpdk_init_handle: 211] Can't open /dev/dpdk-iface for context->cpu: 6! Are you using mlx4/mlx5 driver? CPU 6: initialization finished. [GetOutputInterface: 28] [WARNING] No route to 255.255.255.255 [GetOutputInterface: 28] [WARNING] No route to 255.255.255.255 [GetOutputInterface: 28] [WARNING] No route to 255.255.255.255 [GetOutputInterface: 28] [WARNING] No route to 255.255.255.255

I am new to this so don't really know how to search for solutions myself (so apologies about that)

ajamshed commented 8 years ago

Did you follow all the steps mentioned in the README file? In the README file, we are assuming that both client and server machines lie in the same LAN. I suspect that you have not set up the dpdk driver correctly.

apassi99 commented 8 years ago

Hey Thanks for your response! I think I have the dpdk driver correctly setup as I can run the sample applications in the /example of the dpdk directory. So I guess I have to run a local server on the same LAN and perform the ewget request on that.

apassi99 commented 8 years ago

Hey Jamshed, Can we run the client and the server on the same machine? There seems to be an error when reserving memory.

AL: memzone_reserve_aligned_thread_unsafe(): memzone already exists RING: Cannot reserve memory EAL: Error - exiting with code: 1 Cause: Cannot init mbuf pool, errno: 17

ajamshed commented 8 years ago

No. Unfortunately that won't be possible. Although you can use virtual machines to run dpdk-based processes in the same machine, mTCP has not officially been extended to support virtualization. I'm afraid you will have to use 2 physical machines for mTCP communication for the time being.

apassi99 commented 8 years ago

Thanks again for your response! One other clarification (apologies if I couldn't find it in the README file), is it possible to have a mTCP server running on same machine and have client in python that doesn't use mTCP stack? or vice versa? I was having issues in making that setup.

ajamshed commented 8 years ago

No. That is also not possible with mTCP. Please note that the mTCP-dpdk stack directly reads network traffic from the wire. You can probably try using netmap driver (that mTCP supports) for your set-up. You may be able to communicate between the client and the server using netmap pipe/vale interface. You may have to do a little bit of hacking inside the mTCP stack to make it work (maybe small patch-worknetmap_module.c and core.c files).