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iSCSI config probs w/ BL460C G6 and a MSA2000

Will Swetnam
Occasional Advisor

iSCSI config probs w/ BL460C G6 and a MSA2000

Hardware:
BLC7000 CTO enclosure
BL460C G6 blades
BLC BNT 1GBE2 Switches (installed in back of C7000)
2012L DC MSA

The blades are running Windows Server 2008
I've been able to format the array, configure drives and attach via iSCSI, then read and write from the MSA drive without issue.

The problem arises when I try to hit the internet from the blade. I cannot connect out of the blade... I can't browse a website, for example.

If I disable the NIC that is configured for the iSCSI traffic - outbound connectivity works just fine.

A HP certified engineer assisted w/ config of the chassis, blades, and MSA. He can't seem to find the issue.

The nic for the iSCSI is on the blade - it has an IP on a sep network than the outbound traffic. 10.0.200.x - This nic has no "gateway" info in the definition (at the direction of the HP certified engineer - he said this would prevent outbound traffic to the internet from routing via this nic)

Nic for connectivity out via our internal network is on 10.0.0.x w/ proper gateway info.

A few questions:

In info about the Accelerated iSCSI adapters, it looks like the BL460C G6 is supported, should I buy this Pack - or perhaps - do I *need* this pack for things to configure properly?

If the accelerator pack is not required - what do I need to do to get my configuration working.

Thanks in advance!

- Will
5 REPLIES
Will Swetnam
Occasional Advisor

Re: iSCSI config probs w/ BL460C G6 and a MSA2000

correction - the MSA is the 2012I (not L)

sorry - and thanks again in advance.

- Will
HEM_2
Honored Contributor

Re: iSCSI config probs w/ BL460C G6 and a MSA2000

Will:

your adapters have /24 masks? If not, they overlap.

I agree that a default gateway on the iSCSI NIC would cause problems... you don't have any static Routes configured do you?

Take a look at the output of a "route print" from the box and see if you can figure out what's going on.

Maybe if you paste an ipconfig and route print here, we can help.

Can you ping the DNS server when the iSCSI NIC is enabled?

Accelerated iSCSI is not required for your config to work...
Will Swetnam
Occasional Advisor

Re: iSCSI config probs w/ BL460C G6 and a MSA2000

HEM:

Thanks for the response - yes - both NICs are running ips w/ /24, so there is no overlap, but your tip to check the ipconfig /all showed that what was displaying in the details via the nic properties was not what what the system had loaded for the nic. Even though there was no gateway showing in the properties for ipv4, the system had a gateway in place for the nic I am using for iSCSI.

With that removed, I now have connectivity out to the internet when that nic is enabled, but the box will no longer respond to any network traffic over the LAN.

In doing some research, it seems that multi nic configs are having issues with Windows Server 2008. Configs that worked fine under Server 2003 are having problems routing traffic in 2008. From what I've read, it appears the "strong/weak" network config defaulting to "strong" with disabled weak sends and received has caused part of the problem. I've applied the netsh commands to allow weak sends and receives - no joy.

There was some discussion on another thread I found about ipv6 perhaps complicating the schema for Win 2008, so I've disabled ipv6 on all the interface - again - no joy.

I've run Microsoft's network monitor 3.3 and can see thetraffic hit the machine (a persistent ping, as an example) but other than seeing "ICMP: Echo Request Message, from 10.0.0.179 To 10.0.0.20" there is no other tracing of the packets, they just get binned.

The iSCSI nic is the onboard 10GbE NC532i Multifunction BL-c Adapter, the LAN connection is on a mez card NC326m PCIe Dual Port Adapter.

Below I'll list an ipconfig /all and a route print from the machine when both NICs are enabled.

I'm trying to figure out why any traffic from the network hits the machine and then gets binned. Is there some sort of cross connect going on in the fabric of the midplane? Something else I'm missing?

Looking for some assistance from a fresh set of eyes...

Thanks in advance!

- Will


IPCONFIG /ALL:

Windows IP Configuration

Host Name . . . . . . . . . . . . : SV-DB01
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No

Ethernet adapter Local Area Connection 5:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP NC532i Dual Port 10GbE Multifunction BL-c Adapter
Physical Address. . . . . . . . . : 00-25-B3-A4-A2-10
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.0.200.102(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Enabled

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : HP NC326m PCIe Dual Port Adapter
Physical Address. . . . . . . . . : 00-23-7D-A5-DA-86
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.0.0.20(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 10.0.0.1
DNS Servers . . . . . . . . . . . : 209.244.0.3
209.244.0.4
NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter Local Area Connection* 8:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{A109AB3F-9D59-4C15-B749-1B407968E9ED}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 9:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Local Area Connection* 12:

Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e50:1cee:6aa:f5ff:ffeb(Preferred)
Link-local IPv6 Address . . . . . : fe80::1cee:6aa:f5ff:ffeb%17(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled



*********************************


ROUTE PRINT:

===========================================================================
Interface List
14 ...00 25 b3 a4 a2 10 ...... HP NC532i Dual Port 10GbE Multifunction BL-c Adapter
10 ...00 23 7d a5 da 86 ...... HP NC326m PCIe Dual Port Adapter
1 ........................... Software Loopback Interface 1
16 ...00 00 00 00 00 00 00 e0 isatap.{A109AB3F-9D59-4C15-B749-1B407968E9ED}
28 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2
17 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface
===========================================================================

IPv4 Route Table
===========================================================================
Active Routes:
Network Destination Netmask Gateway Interface Metric
0.0.0.0 0.0.0.0 10.0.0.1 10.0.0.20 20
10.0.0.0 255.255.255.0 On-link 10.0.0.20 266
10.0.0.20 255.255.255.255 On-link 10.0.0.20 266
10.0.0.255 255.255.255.255 On-link 10.0.0.20 266
10.0.200.0 255.255.255.0 On-link 10.0.200.102 266
10.0.200.102 255.255.255.255 On-link 10.0.200.102 266
10.0.200.255 255.255.255.255 On-link 10.0.200.102 266
127.0.0.0 255.0.0.0 On-link 127.0.0.1 306
127.0.0.1 255.255.255.255 On-link 127.0.0.1 306
127.255.255.255 255.255.255.255 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 127.0.0.1 306
224.0.0.0 240.0.0.0 On-link 10.0.0.20 266
224.0.0.0 240.0.0.0 On-link 10.0.200.102 266
255.255.255.255 255.255.255.255 On-link 127.0.0.1 306
255.255.255.255 255.255.255.255 On-link 10.0.0.20 266
255.255.255.255 255.255.255.255 On-link 10.0.200.102 266
===========================================================================
Persistent Routes:
Network Address Netmask Gateway Address Metric
0.0.0.0 0.0.0.0 10.0.0.1 10
===========================================================================

IPv6 Route Table
===========================================================================
Active Routes:
If Metric Network Destination Gateway
17 18 ::/0 On-link
1 306 ::1/128 On-link
17 18 2001::/32 On-link
17 266 2001:0:4137:9e50:1cee:6aa:f5ff:ffeb/128
On-link
17 266 fe80::/64 On-link
17 266 fe80::1cee:6aa:f5ff:ffeb/128
On-link
1 306 ff00::/8 On-link
17 266 ff00::/8 On-link
===========================================================================
Persistent Routes:
None



Will Swetnam
Occasional Advisor

Re: iSCSI config probs w/ BL460C G6 and a MSA2000

Since this is now a routing issue (I think) and not an iSCSI one - I'm closing this thread. I'll start a new one w/ a more appropriate title.

Thanks!

- Will
Will Swetnam
Occasional Advisor

Re: iSCSI config probs w/ BL460C G6 and a MSA2000

Since the initial issue of external connectivity is fixed, I'll be closing this thread and starting a new one w/ a more appropriate description.

Thanks!

- Will