Not able to add two nodes in Pacemaker Cluster

Environment
Node1
Linux xxxxx 3.13.7-x86_64-linode38 #1 SMP Tue Mar 25 12:59:48 EDT 2014 x86_64 GNU/Linux
Node2
Linux xxxxx 3.13.7-x86_64-linode38 #1 SMP Tue Mar 25 12:59:48 EDT 2014 x86_64 GNU/Linux

Result from Server1 crm_mon result

============
Last updated: Wed Apr 16 15:14:43 2014
Last change: Wed Apr 16 14:44:00 2014 via crm_attribute on server1
Stack: openais
Current DC: server1 - partition WITHOUT quorum
Version: 1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff
2 Nodes configured, 2 expected votes
0 Resources configured.
============

Online: [ server1 ]
OFFLINE: [ server2 ]


Result from Server2 crm_mon result

============
Last updated: Wed Apr 16 15:16:04 2014
Last change: Wed Apr 16 15:07:27 2014 via crm_attribute on server2
Stack: openais
Current DC: server2 - partition WITHOUT quorum
Version: 1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff
2 Nodes configured, 2 expected votes
0 Resources configured.
============

Online: [ server2 ]
OFFLINE: [ server1 ]

Server2 crm configure view

node server1
node server2 \
attributes standby="off"
property $id="cib-bootstrap-options" \
dc-version="1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff" \
cluster-infrastructure="openais" \
expected-quorum-votes="2" \
stonith-enabled="false" \
no-quorum-policy="ignore"


Server1 crm configure view

crm(live)configure# show
node server1 \
attributes standby="off"
node server2
property $id="cib-bootstrap-options" \
dc-version="1.1.7-ee0730e13d124c3d58f00016c3376a1de5323cff" \
cluster-infrastructure="openais" \
expected-quorum-votes="2" \
stonith-enabled="false" \
no-quorum-policy="ignore"

Each thinks the other is offline, so I guess they are not able to communicate with each other.

both are able to ping each other and able to ssh as well.(ssh-key -t rsa configured)

Communication requires a client, a communications channel and a server. You are saying that the communications channel is working. You need to check that one end is sending and that the other end is listening.

please elaborate , I am not able to understand what you are saying.. I am able to ping/ssh from both site. means a comminucation channel is present.