ESXi ISCSi dual 10GbE weird con issues

Hey,

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maybe someone can help me out of my cursed black hole. I puzzled around with it nearly the whole day today.

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Test setup is Simple:

https://files.planetlan.de/getp-1cOQMRSAIy05

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My Problem:

As Soon as I try to Connect my LUN over vmk1 (192.168.246.10) I only receive timeouts:

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2019-03-14T16:39:40Z iscsid: Login Target: iqn.2004-04.com.qnap:tvs-873:iscsi.qnap1mdf.0ee550 if=default addr=192.168.246.10:3260 (TPGT:65536 ISID:0x1) 2019-03-14T16:39:40Z iscsid: Notice: Assigned (H66 T0 C0 session=d, target=1/1) 2019-03-14T16:39:40Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:41Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:42Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:43Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:44Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:45Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:46Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:47Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:48Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:49Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:50Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:51Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:52Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:53Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:54Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=1 Failed=0 2019-03-14T16:39:55Z iscsid: Login Failed: iqn.2004-04.com.qnap:tvs-873:iscsi.qnap1mdf.0ee550 if=default addr=192.168.246.10:3260 (TPGT:65536 ISID:0x1) Reason: 00080000 Initiator Error: (0x0008 Connection timed out.) 2019-03-14T16:39:55Z iscsid: Notice: Reclaimed Channel (H66 T0 C0 oid=1) 2019-03-14T16:39:55Z iscsid: Notice: Reclaimed Target (H66 T0 oid=1) 2019-03-14T16:39:55Z iscsid: DISCOVERY: transport_name=iscsi_vmk Pending=0 Failed=1 

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Weird thing is; If I try to connect the "long way" over vmk0 at 172.16.13.8 everything works instantly, LUN is there and Connected ;(

To be sure in testing I removed all Firewall Rules on the iSCSI Server, Service is listening correctly:

tcp 0 0 192.168.246.10:3260 0.0.0.0:* LISTEN - tcp 0 0 172.16.13.8:3260 0.0.0.0:* LISTEN - tcp 0 0 127.0.0.1:3260 0.0.0.0:* LISTEN - 

Routing Table of the ESXi:

VMkernel Routes: Network Netmask Gateway Interface 172.16.13.0 255.255.255.0 Local Subnet vmk0 192.168.246.0 255.255.255.0 Local Subnet vmk1 default 0.0.0.0 172.16.13.1 vmk0 

And ping is fine too:

vmkping -I vmk1 192.168.246.10 PING 192.168.246.10 (192.168.246.10): 56 data bytes 64 bytes from 192.168.246.10: icmp_seq=0 ttl=64 time=0.164 ms 64 bytes from 192.168.246.10: icmp_seq=1 ttl=64 time=0.325 ms 64 bytes from 192.168.246.10: icmp_seq=2 ttl=64 time=0.211 ms --- 192.168.246.10 ping statistics --- 3 packets transmitted, 3 packets received, 0% packet loss round-trip min/avg/max = 0.164/0.233/0.325 ms 

On the iSCSI is no log, no Connection try, nothing. It doesn't matter if I conf ESXi with port bindings or without.

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There are currently no VLANs involved also the ESXi is actually a new installed factory default installation, changed:

- added Vswitch + Portgroup

- added vmk (https://files.planetlan.de/getp-1qFYGeVRwYXN)

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No Chap or further Authentication involved. iSCSI Server set to r/W all.

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Any thought impulse would be appreciated, I need to confess I'm stuck :(

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Thank you in Advance.

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