OK so I just installed a B series chassis with two 6248 FI's connected to two seperate MDS 9124 FC switches.  The MDS switches have been in production for a while and have our SAN as well as other hosts connected to them.  My SAN is setup in passive mode and basically just discoveres all devices connected to the FC switches that are in the same zone.  THe problem I am having is my SAN can see all my blades that are connected to MDS-A but none of them that are connected to MDS-B.   The SAN can see other hosts connected to MDS-B just fine.  I had my cisco guys in here yesterday looking at the config for hours and they say it should be working.  We are at a loss and Im hoping someone here can take a look at the two below configs and point out something we are doing wrong.  In the configs you will notice the new hosts are labeleld 

In the MDS-A config the new hosts are labeled the following and are seen perfectly by the san.  They have the same basic naming conventions on MDS-B

[ESX5-P2]

[ESX6-P2]

[ESX7-P2]

[ESX8-P2]

[UCS-FI-A]

[UCS-FI-A2]

Can someone please help?

--------------------------------------------------------MDS-A Config-------------------------------------------------------------------

Cisco Nexus Operating System (NX-OS) Software

TAC support: http://www.cisco.com/tac

Copyright (c) 2002-2009, Cisco Systems, Inc. All rights reserved.

The copyrights to certain works contained in this software are

owned by other third parties and used and distributed under

license. Certain components of this software are licensed under

the GNU General Public License (GPL) version 2.0 or the GNU

Lesser General Public License (LGPL) Version 2.1. A copy of each

such license is available at

http://www.opensource.org/licenses/gpl-2.0.php and

http://www.opensource.org/licenses/lgpl-2.1.php

MDS-1# show run

version 4.1(3a)

feature npiv

feature telnet

role name default-role

  description This is a system defined role and applies to all users.

  rule 5 permit show feature environment

  rule 4 permit show feature hardware

  rule 3 permit show feature module

  rule 2 permit show feature snmp

  rule 1 permit show feature system

no password strength-check

ip domain-lookup

ip host MDS-1 10.26.x.x

aaa group server radius radius

priv 0x5e7b72de1e7ec5ce6d94f543f2d67d49 localizedkey

snmp-server enable traps fcs

snmp-server enable traps fcns

snmp-server enable traps fdmi

snmp-server enable traps fspf

snmp-server enable traps rscn

snmp-server enable traps zone

snmp-server enable traps callhome

snmp-server enable traps fcdomain

snmp-server enable traps fcns db-full

snmp-server enable traps fcns reject-reg-req

snmp-server enable traps fcns local-entry-change

snmp-server enable traps aaa server-state-change

snmp-server enable traps fcns remote-entry-change

snmp-server enable traps vrrp

snmp-server enable traps snmp authentication

snmp-server community sptftech group network-operator

vsan database

  vsan 100 name "Primary-SAN"

device-alias database

  device-alias name CU0-FC0 pwwn 21:00:00:0b:08:04:4d:c0

  device-alias name CU1-FC0 pwwn 22:00:00:0b:08:04:4d:c0

  device-alias name ESX1-P1 pwwn 21:00:00:1b:32:9f:ab:64

  device-alias name ESX2-P1 pwwn 21:00:00:1b:32:9d:9a:4c

  device-alias name ESX3-P1 pwwn 21:00:00:24:ff:31:50:ca

  device-alias name ESX4-P1 pwwn 21:00:00:24:ff:24:80:68

  device-alias name ESX5-P2 pwwn 20:00:00:25:b5:01:a0:6f

  device-alias name ESX6-P2 pwwn 20:00:00:25:b5:01:a0:7f

  device-alias name ESX7-P2 pwwn 20:00:00:25:b5:01:a0:4f

  device-alias name ESX8-P2 pwwn 20:00:00:25:b5:01:a0:5f

  device-alias name UCS-FI-A pwwn 20:20:54:7f:ee:ad:32:00

  device-alias name UCS-FI-A2 pwwn 20:1f:54:7f:ee:ad:32:00

device-alias commit

fcdomain fcid database

  vsan 100 wwn 21:00:00:0b:08:04:4d:c0 fcid 0x5a0000 dynamic

!              [CU0-FC0]

  vsan 100 wwn 22:00:00:0b:08:04:4d:c0 fcid 0x5a0100 dynamic

!              [CU1-FC0]

  vsan 100 wwn 21:00:00:1b:32:9f:ab:64 fcid 0x5a0200 dynamic

!              [ESX1-P1]

  vsan 100 wwn 21:00:00:1b:32:9d:9a:4c fcid 0x5a0300 dynamic

!              [ESX2-P1]

  vsan 100 wwn 21:00:00:24:ff:24:80:68 fcid 0x5a0400 dynamic

!              [ESX4-P1]

  vsan 1 wwn 20:20:54:7f:ee:a6:c6:40 fcid 0x260000 dynamic

  vsan 100 wwn 20:20:54:7f:ee:a6:c6:40 fcid 0x5a0500 dynamic

  vsan 100 wwn 21:00:00:24:ff:31:50:ca fcid 0x5a0700 dynamic

!              [ESX3-P1]

  vsan 100 wwn 20:20:54:7f:ee:ad:32:00 fcid 0x5a0600 dynamic

!              [UCS-FI-A]

  vsan 100 wwn 20:00:00:25:b5:01:a0:5f fcid 0x5a0601 dynamic

!              [ESX8-P2]

  vsan 100 wwn 20:00:00:25:b5:01:a0:4f fcid 0x5a0802 dynamic

!              [ESX7-P2]

  vsan 100 wwn 20:00:00:25:b5:01:a0:7f fcid 0x5a0604 dynamic

!              [ESX6-P2]

  vsan 100 wwn 20:00:00:25:b5:01:a0:6f fcid 0x5a0801 dynamic

!              [ESX5-P2]

  vsan 100 wwn 20:1f:54:7f:ee:ad:32:00 fcid 0x5a0800 dynamic

!              [UCS-FI-A2]

vsan database

  vsan 100 interface fc1/1

  vsan 100 interface fc1/2

  vsan 100 interface fc1/3

  vsan 100 interface fc1/4

  vsan 100 interface fc1/5

  vsan 100 interface fc1/6

  vsan 100 interface fc1/7

  vsan 100 interface fc1/8

  vsan 100 interface fc1/9

ip default-gateway 10.26.19.1

switchname MDS-1

line console

boot kickstart bootflash:/m9100-s2ek9-kickstart-mz.4.1.3a.bin

boot system bootflash:/m9100-s2ek9-mz.4.1.3a.bin

interface fc1/1

interface fc1/2

interface fc1/3

interface fc1/4

interface fc1/5

interface fc1/6

interface fc1/7

interface fc1/8

interface fc1/9

interface fc1/10

interface fc1/11

interface fc1/12

interface fc1/13

interface fc1/14

interface fc1/15

interface fc1/16

interface fc1/17

interface fc1/18

interface fc1/19

interface fc1/20

interface fc1/21

interface fc1/22

interface fc1/23

interface fc1/24

!Full Zone Database Section for vsan 100

zone name shared-zone vsan 100

    member pwwn 21:00:00:1b:32:9f:ab:64

!               [ESX1-P1]

    member pwwn 21:00:00:1b:32:9d:9a:4c

!               [ESX2-P1]

    member pwwn 21:00:00:0b:08:04:4d:c0

!               [CU0-FC0]

    member pwwn 22:00:00:0b:08:04:4d:c0

!               [CU1-FC0]

    member pwwn 21:00:00:24:ff:31:50:ca

!               [ESX3-P1]

    member pwwn 20:00:00:25:b5:01:a0:6f

!               [ESX5-P2]

    member pwwn 21:00:00:24:ff:24:80:68

!               [ESX4-P1]

    member pwwn 20:00:00:25:b5:01:a0:7f

!               [ESX6-P2]

    member pwwn 20:00:00:25:b5:01:a0:4f

!               [ESX7-P2]

    member pwwn 20:00:00:25:b5:01:a0:5f

!               [ESX8-P2]

    member pwwn 20:20:54:7f:ee:ad:32:00

!               [UCS-FI-A]

    member pwwn 20:1f:54:7f:ee:ad:32:00

!               [UCS-FI-A2]

zoneset name shared-zoneset vsan 100

    member shared-zone

zoneset activate name shared-zoneset vsan 100

interface fc1/1

  switchport description CU1-FC0

  port-license acquire

  no shutdown

interface fc1/2

  switchport description ESX4-P1

  port-license acquire

  no shutdown

interface fc1/3

  switchport description CU0-FC0

  port-license acquire

  no shutdown

interface fc1/4

  switchport description ESX3-P1

  port-license acquire

  no shutdown

interface fc1/5

  switchport description ESX1-P1

  port-license acquire

  no shutdown

interface fc1/6

  switchport description UCS Fabric Interconnect A

  port-license acquire

  no shutdown

interface fc1/7

  switchport description ESX2-P1

  port-license acquire

  no shutdown

interface fc1/8

  port-license acquire

  no shutdown

interface fc1/9

interface fc1/10

interface fc1/11

interface fc1/12

interface fc1/13

interface fc1/14

interface fc1/15

interface fc1/16

interface fc1/17

interface fc1/18

interface fc1/19

interface fc1/20

interface fc1/21

interface fc1/22

interface fc1/23

interface fc1/24

interface mgmt0

  ip address 10.26.x.x 255.255.255.0

----------------------------------------------------------------------MDS-B (Not showing hosts on SAN) config------------------------------------------------------

Cisco Nexus Operating System (NX-OS) Software

TAC support: http://www.cisco.com/tac

Copyright (c) 2002-2009, Cisco Systems, Inc. All rights reserved.

The copyrights to certain works contained in this software are

owned by other third parties and used and distributed under

license. Certain components of this software are licensed under

the GNU General Public License (GPL) version 2.0 or the GNU

Lesser General Public License (LGPL) Version 2.1. A copy of each

such license is available at

http://www.opensource.org/licenses/gpl-2.0.php and

http://www.opensource.org/licenses/lgpl-2.1.php

MDS-2# show run

version 4.1(3a)

feature npiv

feature telnet

role name default-role

  description This is a system defined role and applies to all users.

  rule 5 permit show feature environment

  rule 4 permit show feature hardware

  rule 3 permit show feature module

  rule 2 permit show feature snmp

  rule 1 permit show feature system

no password strength-check

ip domain-lookup

ip host MDS-2 10.26.x.x

aaa group server radius radius

priv 0x6e724287d3740ca7542d6c1f412dad4d localizedkey

snmp-server enable traps fcs

snmp-server enable traps fcns

snmp-server enable traps fdmi

snmp-server enable traps fspf

snmp-server enable traps rscn

snmp-server enable traps zone

snmp-server enable traps callhome

snmp-server enable traps fcdomain

snmp-server enable traps fcns db-full

snmp-server enable traps fcns reject-reg-req

snmp-server enable traps fcns local-entry-change

snmp-server enable traps aaa server-state-change

snmp-server enable traps fcns remote-entry-change

snmp-server enable traps vrrp

snmp-server enable traps snmp authentication

snmp-server community sptftech group network-operator

vsan database

  vsan 100 name "Primary-SAN"

device-alias database

  device-alias name CU0-FC1 pwwn 23:00:00:0b:08:04:4d:c0

  device-alias name CU1-FC1 pwwn 24:00:00:0b:08:04:4d:c0

  device-alias name ESX1-P2 pwwn 21:01:00:1b:32:bf:ab:64

  device-alias name ESX2-P2 pwwn 21:01:00:1b:32:bd:9a:4c

  device-alias name ESX3-P2 pwwn 21:00:00:24:ff:31:50:cb

  device-alias name ESX4-P2 pwwn 21:00:00:24:ff:24:80:69

  device-alias name ESX5-P2 pwwn 20:00:00:25:b5:01:b0:6f

  device-alias name ESX6-P2 pwwn 20:00:00:25:b5:01:b0:7f

  device-alias name ESX7-P2 pwwn 20:00:00:25:b5:01:b0:4f

  device-alias name ESX8-P2 pwwn 20:00:00:25:b5:01:b0:5f

  device-alias name UCS-FI-B pwwn 20:20:54:7f:ee:a6:c6:40

  device-alias name UCS-FI-B2 pwwn 20:1f:54:7f:ee:a6:c6:40

device-alias commit

fcdomain fcid database

  vsan 100 wwn 23:00:00:0b:08:04:4d:c0 fcid 0x710000 dynamic

!              [CU0-FC1]

  vsan 100 wwn 24:00:00:0b:08:04:4d:c0 fcid 0x710100 dynamic

!              [CU1-FC1]

  vsan 100 wwn 21:01:00:1b:32:bf:ab:64 fcid 0x710200 dynamic

!              [ESX1-P2]

  vsan 100 wwn 21:01:00:1b:32:bd:9a:4c fcid 0x710300 dynamic

!              [ESX2-P2]

  vsan 100 wwn 21:00:00:24:ff:31:50:cb fcid 0x710400 dynamic

!              [ESX3-P2]

  vsan 100 wwn 21:00:00:24:ff:24:80:69 fcid 0x710500 dynamic

!              [ESX4-P2]

  vsan 100 wwn 20:00:00:25:b5:01:b0:7f fcid 0x710708 dynamic

!              [ESX6-P2]

  vsan 100 wwn 20:20:54:7f:ee:a6:c6:40 fcid 0x710600 dynamic

!              [UCS-FI-B]

  vsan 100 wwn 20:00:00:25:b5:01:b0:5f fcid 0x710601 dynamic

!              [ESX8-P2]

  vsan 100 wwn 20:00:00:25:b5:01:b0:4f fcid 0x710704 dynamic

!              [ESX7-P2]

  vsan 100 wwn 20:00:00:25:b5:01:b0:6f fcid 0x710701 dynamic

!              [ESX5-P2]

  vsan 100 wwn 20:1f:54:7f:ee:a6:c6:40 fcid 0x710700 dynamic

!              [UCS-FI-B2]

vsan database

  vsan 100 interface fc1/1

  vsan 100 interface fc1/2

  vsan 100 interface fc1/3

  vsan 100 interface fc1/4

  vsan 100 interface fc1/5

  vsan 100 interface fc1/6

  vsan 100 interface fc1/7

  vsan 100 interface fc1/8

ip default-gateway 10.26.x.x

switchname MDS-2

line console

boot kickstart bootflash:/m9100-s2ek9-kickstart-mz.4.1.3a.bin

boot system bootflash:/m9100-s2ek9-mz.4.1.3a.bin

interface fc1/6

  switchport rate-mode dedicated

interface fc1/8

  switchport rate-mode dedicated

interface fc1/1

interface fc1/2

interface fc1/3

interface fc1/4

interface fc1/5

interface fc1/7

interface fc1/9

interface fc1/10

interface fc1/11

interface fc1/12

interface fc1/13

interface fc1/14

interface fc1/15

interface fc1/16

interface fc1/17

interface fc1/18

interface fc1/19

interface fc1/20

interface fc1/21

interface fc1/22

interface fc1/23

interface fc1/24

interface fc1/6

interface fc1/8

!Full Zone Database Section for vsan 100

zone name shared-zone vsan 100

    member pwwn 23:00:00:0b:08:04:4d:c0

!               [CU0-FC1]

    member pwwn 24:00:00:0b:08:04:4d:c0

!               [CU1-FC1]

    member pwwn 21:01:00:1b:32:bf:ab:64

!               [ESX1-P2]

    member pwwn 21:01:00:1b:32:bd:9a:4c

!               [ESX2-P2]

    member pwwn 21:00:00:24:ff:24:80:69

!               [ESX4-P2]

    member pwwn 21:00:00:24:ff:31:50:cb

!               [ESX3-P2]

    member pwwn 20:00:00:25:b5:01:a0:6f

    member pwwn 20:00:00:25:b5:01:a0:7f

    member pwwn 20:00:00:25:b5:01:a0:4f

    member pwwn 20:00:00:25:b5:01:a0:5f

    member pwwn 20:20:54:7f:ee:a6:c6:40

!               [UCS-FI-B]

    member pwwn 20:1f:54:7f:ee:a6:c6:40

!               [UCS-FI-B2]

zoneset name shared-zoneset vsan 100

    member shared-zone

zoneset activate name shared-zoneset vsan 100

interface fc1/1

  switchport description CU1-FC1

  port-license acquire

  no shutdown

interface fc1/2

  switchport description ESX4-P2

  port-license acquire

  no shutdown

interface fc1/3

  switchport description CU0-FC1

  port-license acquire

  no shutdown

interface fc1/4

  switchport description ESX3-P2

  port-license acquire

  no shutdown

interface fc1/5

  switchport description ESX1-P2

  port-license acquire

  no shutdown

interface fc1/6

  port-license acquire

  no shutdown

interface fc1/7

  switchport description ESX2-P2

  port-license acquire

  no shutdown

interface fc1/8

  port-license acquire

  no shutdown

interface fc1/9

interface fc1/10

interface fc1/11

interface fc1/12

interface fc1/13

interface fc1/14

interface fc1/15

interface fc1/16

interface fc1/17

interface fc1/18

interface fc1/19

interface fc1/20

interface fc1/21

interface fc1/22

interface fc1/23

interface fc1/24

interface mgmt0

  ip address 10.26.x.x 255.255.255.0