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Occasional Contributor
Posts: 16
Registered: ‎03-02-2007

IBM BladeCenter Access Gateway - Ports Stuck at G-Port

Hi all,

I have an IBM BladeCenter with a 20-port 8 Gb switch installed and configured as an Access Gateway. A couple of ports on the switch seem to be stuck as G-Ports when I'm in access gateway mode.  When I'm in regular switch mode, one of the ports logs in no problem (VMWare ESX host) but the second host (Windows 2008) appears to also be stuck as a G-Port.  We've checked the server-side and the QLogic driver is configured for Point-to-Point.

Here's what we see when I have the switch set to Native mode (ports 1 and 6 are the ones I'm interested in):

switchName:     LAB_xxxxxxxx_B
switchType:     73.6
switchState:    Online
switchMode:     Native
switchRole:     Subordinate
switchDomain:   2
switchId:       fffc02
switchWwn:      10:00:00:05:1e:e0:5b:d7
zoning:         ON (XXX_Prod)
switchBeacon:   OFF

Area Port Media Speed State     Proto
=====================================
  0   0   id    N8   Online           E-Port  10:00:00:05:33:00:d4:b0 "XXX_SAN80B_A" (upstream)
  1   1   cu    N4   Online           F-Port  21:01:00:e0:8b:1c:55:86
  2   2   cu    N4   Online           F-Port  21:01:00:e0:8b:1c:55:86
  3   3   cu    AN   No_Sync
  4   4   cu    AN   No_Sync
  5   5   cu    AN   No_Sync
  6   6   cu    N8   Online           G-Port
  7   7   cu    N8   Online           F-Port  21:01:00:1b:32:bd:f4:7e
  8   8   cu    AN   No_Sync
  9   9   cu    AN   No_Sync
10  10   cu    AN   No_Sync
11  11   cu    AN   No_Sync
12  12   cu    AN   No_Sync
13  13   cu    AN   No_Sync
14  14   cu    AN   No_Sync
15  15   id    N8   No_Light
16  16   --    N8   No_Module
17  17   --    N8   No_Module
18  18   --    N8   No_Module

19  19   --    N8   No_Module

And here's what we see when the switch is flipped over to AG mode:

switchName:     LAB_xxxxxxxx_B
switchType:     73.6
switchState:    Online
switchMode:     Access Gateway Mode
switchWwn:      10:00:00:05:1e:e0:5b:d7
switchBeacon:   OFF

Area Port Media Speed State     Proto
=====================================
  0   0   id    N8   Online           N-Port  10:00:00:05:33:00:d4:b0 0x4c3400
  1   1   cu    N4   Online           G-Port
  2   2   cu    N8   Online           F-Port  21:01:00:e0:8b:1c:55:86 0x4c3402
  3   3   cu    AN   No_Sync
  4   4   cu    AN   No_Sync
  5   5   cu    AN   No_Sync
  6   6   cu    N8   Online           G-Port
  7   7   cu    N8   Online           F-Port  21:01:00:1b:32:bd:f4:7e 0x4c3401
  8   8   cu    AN   No_Sync
  9   9   cu    AN   No_Sync
10  10   cu    AN   No_Sync
11  11   cu    AN   No_Sync
12  12   cu    AN   No_Sync
13  13   cu    AN   No_Sync
14  14   cu    AN   No_Sync
15  15   id    N8   No_Light
16  16   --    N8   No_Module
17  17   --    N8   No_Module
18  18   --    N8   No_Module
19  19   --    N8   No_Module

Notice that port 6 (Windows 2008 - QLogic - Point-to-Point) is G-Port in both Native and AG mode but port 1 (ESX server) is G-Port in AG but fine in Native?

My firmware is 6.2.0_bc3.  The IBM model number is 44X1920.  We have only one active port (0), and I've set the port mappings so that all blades use port 0.

Does anyone have any suggestions as to why this might be going on?

Thanks.

--db

Occasional Contributor
Posts: 16
Registered: ‎03-02-2007

Re: IBM BladeCenter Access Gateway - Ports Stuck at G-Port

On closer inspection, it looks like the WWNs are duplicated for some reason.  At least with the ESX hosts.  I just noticed that ports 1 and 2 in native mode have the exact same WWPN.

I need to confirm this on my W2K8 hosts in ports 6 and 7.

Occasional Contributor
Posts: 16
Registered: ‎03-02-2007

Re: IBM BladeCenter Access Gateway - Ports Stuck at G-Port

Okay, so I've found two different problems:

- Ports 1 and 2 (ESX hosts) show duplicate HBA WWNs

- Ports 6 and 7 (W2K8 hosts) are not duplicate, and port 6 seems to continually be stuck as a G-Port

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