Uplink problems from UCS 6128 FI

Question

Hi,
We have one demo UCS system. It was working pretty smoth, we take it to few presentations etc etc.
Few days we cleaned system, and decided to reconfigure and deploy.
Overview :
Cisco UCS blade chasis, 2 b200m2 servers with VIC adapters, 2x6128 FI.
Uplinks are only 1 Gb and GLC-T modules are used for uplinks.
Problem now is that as soon as i configure port as uplink and configure it for 1 Gbps, port changes to admin down, and no connections to upper switches are available.
We decided to upgrade to latest software and now is 2.0(4a). Conection from VIC, through IOM and to server ports is ok, but uplinks are still not working.
Upper switch  c2950 has ports that connects to ucs as trunk, everything as usual.
Just to clarfy, this exact setup was active before and working.
Errors from UCS are :
F0479    2012-07-25T13:04:26.635    112798 Virtual interface 704 link state is down
F0283    enm source pinning failed
Output from nxos for uplink port :
======================================================
Hardware: 1000/10000 Ethernet, address: 0005.73cc.4b48 (bia 0005.73cc.4b48)
Description: U: Uplink
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA
Port mode is trunk
auto-duplex, 1000 Mb/s, media type is 10G
Beacon is turned off
Input flow-control is off, output flow-control is off
Rate mode is dedicated
Switchport monitor is off
EtherType is 0x8100
Last link flapped never
Last clearing of "show interface" counters never
30 seconds input rate 0 bits/sec, 0 bytes/sec, 0 packets/sec
30 seconds output rate 0 bits/sec, 0 bytes/sec, 0 packets/sec
Load-Interval #2: 5 minute (300 seconds)
input rate 0 bps, 0 pps; output rate 0 bps, 0 pps
RX
0 unicast packets  0 multicast packets  0 broadcast packets
0 input packets  0 bytes
0 jumbo packets  0 storm suppression packets
0 giants      0 input error  0 short frame  0 overrun   0 underrun      0 watchdog  0 if down drop
0 input with dribble  0 input discard
0 Rx pause
TX
0 unicast packets  0 multicast packets  0 broadcast packets
0 output packets  0 bytes
0 jumbo packets
0 output errors  0 collision  0 deferred  0 late collision
0 lost carrier  0 no carrier  0 babble
0 Tx pause
0 interface resets
=====================================================
Output from UCS cli for vif paths
Server: 1/1
Fabric ID: A
VIF        vNIC            Link State  Overall Status Prot State    Prot Role   Admin Pin  Oper Pin   Transport
41                 Unknown     Unknown                                  0/0        0/0        Unknown
689 eth1            Error       Error          No Protection Backup      0/0        0/0        Ether
690 eth0            Error       Error          No Protection Primary     0/0        0/0        Ether
Fabric ID: B
VIF        vNIC            Link State  Overall Status Prot State    Prot Role   Admin Pin  Oper Pin   Transport
42                 Unknown     Unknown                                  0/0        0/0        Unknown
688 eth1            Error       Error          No Protection Primary     0/0        0/0        Ether
691 eth0            Error       Error          No Protection Backup      0/0        0/0        Ether
Any idea? Everything is connected as before, it used to work flawless.

Answer 1

well, server ports are up. I know this is uplink ports problem, but really cannot see where the problem is :). Ports on northbound switch that ucs connects to are trunk ports, vlans are defined on that switch.
I also suspect sfp's (cisco glc-t) but it seems pretty strange that 2 sfp modules are malfunctioning. They used to work pretty neat.
Just to mention we have same UCS in production and it is working, config is same, ports are same, nxos outputs for ethernet uplinks are same..
Just to check somenthing i created two hba's (we do have FC expansion card, but ucs is not connected to FC switches), and vif paths for FC are up...seems that this is releated to ethernet problem solely.