[ofa-general] ***SPAM*** Problem in IB network without Switch

[lakshmana swamy]

 Hi All

  I have been trying to enable the IPoIB communication between two machines. The machines has been conncted with a Back-to-Back Infiniband Cable since I dont have IB switch. Installation of drivers and IP configuration has been done in both the machines. Subnet manager (opensmd) running on one machine.

The problem is communication has not been happening through IB."ibstatus" output shows port is in "Down" State in both the machines. What could be the problem, Iam unable to figure out where is the problem.

Operating System  :  Rocks 5.0 (RHEL 5.0)
OFED : Cisco OFED roll 5.0 (OFED 1.3)
HCA cards : Mellanox SDR

Please check the following commands output.

[root at mattool ~]# ibstatus
Infiniband device 'mthca0' port 1 status:
        default gid:     fe80:0000:0000:0000:0002:c901:08cd:13c1
        base lid:        0x0
        sm lid:          0x0
        state:           1: DOWN
        phys state:      2: Polling
        rate:            2.5 Gb/sec (1X)
Infiniband device 'mthca0' port 2 status:
        default gid:     fe80:0000:0000:0000:0002:c901:08cd:13c2
        base lid:        0x0
        sm lid:          0x0
        state:           1: DOWN
        phys state:      2: Polling
        rate:            2.5 Gb/sec (1X)

[root at mattool ~]# /etc/init.d/openibd status

  HCA driver loaded
Configured devices:
ib0 ib1
Currently active devices:
ib0
ib1
The following OFED modules are loaded:
  rdma_ucm
  qlgc_vnic
  ib_sdp
  rdma_cm
  ib_addr
  ib_ipoib
  ib_ipath
  mlx4_core
  mlx4_ib
  ib_mthca
  ib_uverbs
  ib_umad
  ib_sa
  ib_cm
  ib_mad
  ib_core
  iw_cxgb3
[root at mattool ~]# 


 Thanks 

Laxman

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