RE: [Open-FCoE] Need a little help with a vn2vn target & initiator setup

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On Sat, 2012-08-18 at 05:26 +0000, Patil, Kiran wrote:
> Generally FCFs don't support VN2VN yet. Hence using FCF between
> initiator and target for VN2VN won't work.
> 
> If you using any DCB switches, it VN2VN across DCB switch should work,
> though you have to make sure DCB is enabled on both side interface
> (initiator and target side). Are you using DCB switch in between?

I am not using any switch at all between the eth6 interfaces on both
hosts.  There is a single SFP+ copper cable between the interfaces.

Here is the initiator information:

> [root@spv-21 host8]# ifconfig eth6
> eth6      Link encap:Ethernet  HWaddr 00:1B:21:67:5F:28  
>           inet addr:192.168.1.2  Bcast:192.168.1.255  Mask:255.255.255.0
>           inet6 addr: fe80::21b:21ff:fe67:5f28/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:38254 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:38268 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:2752430 (2.6 MiB)  TX bytes:2753287 (2.6 MiB)
> 
> [root@spv-21 host8]# cd /sys/class/fc_host/host8; for i in `/bin/ls port* node*`; do echo $i: `cat $i`; done
> node_name: 0x1000001b21675f2a
> port_id: 0x005f2a
> port_name: 0x2000001b21675f2a
> port_state: Online
> port_type: NPort (fabric via point-to-point)

Here is the target information:

> [root@spv-20 host8]# ifconfig eth6
> eth6      Link encap:Ethernet  HWaddr 00:1B:21:4B:0A:0C  
>           inet addr:192.168.1.1  Bcast:192.168.1.255  Mask:255.255.255.0
>           inet6 addr: fe80::21b:21ff:fe4b:a0c/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:38277 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:38271 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:2753718 (2.6 MiB)  TX bytes:2753260 (2.6 MiB)
> 
> [root@spv-20 host8]# cd /sys/class/fc_host/host8; for i in `/bin/ls port* node*`; do echo $i: `cat $i`; done
> node_name: 0x1000001b214b0a0e
> port_id: 0x000a0e
> port_name: 0x2000001b214b0a0e
> port_state: Online
> port_type: NPort (fabric via point-to-point)

The only configuration that was done was assigning IP addresses and
"echo eth6 >create_vn2vn".  

> 20:00:00:1b:21:4b:0a:0e : I assume this is target side SAN MAC
> address? 

Yes.

> Which network card (Ethernet) you are using.  Looks like you are using
> Intel(R) 10GbE Fiber Card. Id it is single port NIC, SAN MAC address
> is actual MAC address +1 and if it is dual port NIC, SAN MAC address
> is actual MAC address +2. Mean last byte of actual MAC address +2.

That appears to true here.

> Make sure you verify SAN MAC addresses on both side (initiator and
> target). You can also capture wireshark or xgig trace and loot at it.
> Typically it first goes thru' FIP state machine, then FLOGI, PLOGI,
> PRLI from both end. Then only VN2VN session is established.

Since I have not created VLANs with these Ethernet devices, could that
be the problem?  I did try tshark, but only the fcping of the 

> [root@spv-21 host8]# fcping -c 3 -h eth6 -F 0x000a0e
> sending echo to 0xA0E
> echo    1 accepted                        0.429 ms
> echo    2 accepted                        0.444 ms
> echo    3 accepted                        0.384 ms
> 3 frames sent, 3 received 0 errors, 0.000% loss, avg. rt time 0.419 ms
> [root@spv-21 host8]# fcping -c 3 -h eth6 -P 0x2000001b214b0a0e
> GID_PN error: Invalid argument
> cannot find fcid of destination @ wwpn 0x2000001B214B0A0E
> [root@spv-21 host8]# fcping -c 3 -h eth6 -N 0x2000001b214b0a0e
> GID_NN error: Invalid argument
> cannot find fcid of destination @ wwnn 0x2000001B214B0A0E

> [root@spv-21 ~]# tshark -i eth6
> Running as user "root" and group "root". This could be dangerous.
> Capturing on eth6
>   0.000000 0e:fd:00:00:5f:2a -> Broadcom_01:00:04 FIP Unknown op 0x5
>   1.590728 0e:fd:00:00:0a:0e -> Broadcom_01:00:04 FIP Unknown op 0x5
>   8.032008 0e:fd:00:00:5f:2a -> Broadcom_01:00:04 FIP Unknown op 0x5
>   9.686718 0e:fd:00:00:0a:0e -> Broadcom_01:00:04 FIP Unknown op 0x5
>  11.089857     00.5f.2a -> 00.0a.0e     FC ELS ECHO
>  11.090118     00.0a.0e -> 00.5f.2a     FC ELS ACC (ECHO)
>  12.090374     00.5f.2a -> 00.0a.0e     FC ELS ECHO
>  12.090643     00.0a.0e -> 00.5f.2a     FC ELS ACC (ECHO)
>  13.090861     00.5f.2a -> 00.0a.0e     FC ELS ECHO
>  13.091092     00.0a.0e -> 00.5f.2a     FC ELS ACC (ECHO)
>  16.064020 0e:fd:00:00:5f:2a -> Broadcom_01:00:04 FIP Unknown op 0x5
>  17.718712 0e:fd:00:00:0a:0e -> Broadcom_01:00:04 FIP Unknown op 0x5
>  24.128018 0e:fd:00:00:5f:2a -> Broadcom_01:00:04 FIP Unknown op 0x5
>  25.750698 0e:fd:00:00:0a:0e -> Broadcom_01:00:04 FIP Unknown op 0x5
>  32.192003 0e:fd:00:00:5f:2a -> Broadcom_01:00:04 FIP Unknown op 0x5
>  33.846728 0e:fd:00:00:0a:0e -> Broadcom_01:00:04 FIP Unknown op 0x5
>  40.224026 0e:fd:00:00:5f:2a -> Broadcom_01:00:04 FIP Unknown op 0x5

I am curious what the FIP Unknown ops are...
> 
> Thanks,
> -- Kiran P.

Thanks!

-Andrew


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