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тАО01-12-2011 12:17 PM
тАО01-12-2011 12:17 PM
Hope someone out there has the answer for me.
Here is the problem:
I set the iscsi lan card to be 100FD in /etc/rc.config/hpietherconf. System came up without any error.
# lanadmin -s -x 3
Speed = 100000000
Current Config = 100 Full-Duplex MANUAL
On the CISCO swith port, it is set to 100FD manual as well. Other system can ping this NIC address. But all the ISCSI luns did not mount after system came up. I restarted iscsi daemon and it complained not finding ISCSI disks. From the system, it can ping the storage. What can be the problem? The ISCSI Nic was on 100 half-duplex/auto. But the swith port was on 100Full-duplex/mannual. Users complained slow speed, that's why I changed the nic speed to match the switch port setting. Any idea what's wrong? By the way, this happened to two systems running hpux 11.23 and 11.31.
Thanks,
Lucey
Solved! Go to Solution.
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тАО01-12-2011 12:35 PM
тАО01-12-2011 12:35 PM
SolutionDon't know that it'll help the iSCSI problem. Presumably, if you've got TCP/IP connectivity, it should work. Haven't used it myself so don't know of any possible caveats.
Jeff Traigle
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тАО01-12-2011 04:09 PM
тАО01-12-2011 04:09 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
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тАО01-12-2011 04:18 PM
тАО01-12-2011 04:18 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
Anyway, I changed switch port to auto and removed setting in hpietherconf to back to auto. Rebooted the system and it came up as 100 half-duplex. ISCSI luns were all mounted.
I just curious what else to look at? Leave it as 100 HD?
Thanks,
Lucey
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тАО01-12-2011 04:19 PM
тАО01-12-2011 04:19 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
Bill Hassell, sysadmin
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тАО01-12-2011 04:25 PM
тАО01-12-2011 04:25 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
The other one is 100Base-T. Why the manual set did not work on both server and switch port remains mystery.
Lucey
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тАО01-12-2011 04:26 PM
тАО01-12-2011 04:26 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
Again, just in case that was not clear, check the link-level statistics :)
IMO, one should never force duplex unless one has equipment with a known autoneg problem and said equipment absolutely cannot be replaced. But you should have already seen that in the attachment in my previous posting :)
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тАО01-12-2011 04:50 PM
тАО01-12-2011 04:50 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
#lanadmin -g mibstats 3
LAN INTERFACE STATUS DISPLAY
Wed, Jan 12,2011 16:56:19
PPA Number = 3
Description = lan3 HP A3738A PCI 10/100Base-TX Ultimate Combo [100BASE-TX,HD,
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 100000000
Station Address = 0x108327c508
Administration Status (value) = up(1)
Operation Status (value) = up(1)
Last Change = 744
Inbound Octets = 7139348
Inbound Unicast Packets = 8831
Inbound Non-Unicast Packets = 2928
Inbound Discards = 0
Inbound Errors = 0
Inbound Unknown Protocols = 9
Outbound Octets = 9287698
Outbound Unicast Packets = 10067
Outbound Non-Unicast Packets = 7
Outbound Discards = 0
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 655367
Ethernet-like Statistics Group
Index = 4
Alignment Errors = 0
FCS Errors = 0
Single Collision Frames = 277
Multiple Collision Frames = 36
Deferred Transmissions = 1042
Late Collisions = 462
Excessive Collisions = 0
Internal MAC Transmit Errors = 0
Carrier Sense Errors = 0
Frames Too Long = 0
Internal MAC Receive Errors = 0
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тАО01-12-2011 04:59 PM
тАО01-12-2011 04:59 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
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тАО01-12-2011 05:11 PM
тАО01-12-2011 05:11 PM
Re: ISCSI LUNs not reachable after Lan Card set to 100FD
The switch is CISCO Catalyst 3550. 100BT ports. If I move to another CISCO switch with 1GB port, will autoneg on both end work correctly, nic is 10/100 Base-T?