Network problems occurred during rac_grid self-check

Original Works are from the blog of "Deep Blue blog". You are welcome to reprint them. Please note the following source when reprinting them. Otherwise, you will be held legally liable for copyright. Deep Blue blog: blog. csdn. nethuangyanlongarticledetails40735481 environment: Cent0S6.464bit and grid64bit self-check "TCPconnectivityofsubnet"

Original Works are from the blog of "Deep Blue blog". You are welcome to reprint them. Please note the following source when reprinting them. Otherwise, you will be held legally liable for copyright. Deep Blue blog: http://blog.csdn.net/huangyanlong/article/details/40735481 environment: Cent0S 6.4 64bit, grid 64bit self-check appears "TCP connectivity of subnet"

Original Works are from the blog of "Deep Blue blog". You are welcome to reprint them. Please note the following source when reprinting them. Otherwise, you will be held legally liable for copyright.

Deep Blue blog: http://blog.csdn.net/huangyanlong/article/details/40735481

Environment: Cent0S 6.4 64bit, grid 64bit

The "TCP connectivity of subnet" issue occurs during self-check.

[Problem]
Manually perform grid self-check and report the following error:
[Grid @ xzxt1 grid] $./runcluvfy. sh stage-pre crsinst-n xzxt1, xzxt2-fixup-verbose

............Check: Node connectivity of subnet "192.168.56.0"  Source                          Destination                     Connected?        ------------------------------  ------------------------------  ----------------  xzxt2[192.168.56.31]            xzxt1[192.168.56.30]            yes             Result: Node connectivity passed for subnet "192.168.56.0" with node(s) xzxt2,xzxt1Check: TCP connectivity of subnet "192.168.56.0"  Source                          Destination                     Connected?        ------------------------------  ------------------------------  ----------------  xzxt1:192.168.56.30             xzxt2:192.168.56.31             failed          ERROR: PRVF-7617 : Node connectivity between "xzxt1 : 192.168.56.30" and "xzxt2 : 192.168.56.31" failedResult: TCP connectivity check failed for subnet "192.168.56.0"Check: Node connectivity of subnet "10.10.10.0"  Source                          Destination                     Connected?        ------------------------------  ------------------------------  ----------------  xzxt2[10.10.10.91]              xzxt1[10.10.10.90]              yes             Result: Node connectivity passed for subnet "10.10.10.0" with node(s) xzxt2,xzxt1Check: TCP connectivity of subnet "10.10.10.0"  Source                          Destination                     Connected?        ------------------------------  ------------------------------  ----------------  xzxt1:10.10.10.90               xzxt2:10.10.10.91               failed          ERROR: PRVF-7617 : Node connectivity between "xzxt1 : 10.10.10.90" and "xzxt2 : 10.10.10.91" failedResult: TCP connectivity check failed for subnet "10.10.10.0"Interfaces found on subnet "192.168.56.0" that are likely candidates for VIP are:xzxt2 eth0:192.168.56.31xzxt1 eth0:192.168.56.30WARNING: Could not find a suitable set of interfaces for the private interconnectChecking subnet mask consistency...Subnet mask consistency check passed for subnet "192.168.56.0".Subnet mask consistency check passed for subnet "10.10.10.0".Subnet mask consistency check passed.Result: Node connectivity check failedChecking multicast communication...Checking subnet "192.168.56.0" for multicast communication with multicast group "230.0.1.0"...PRVG-11134 : Interface "192.168.56.31" on node "xzxt2" is not able to communicate with interface "192.168.56.31" on node "xzxt2"PRVG-11134 : Interface "192.168.56.31" on node "xzxt2" is not able to communicate with interface "192.168.56.30" on node "xzxt1"PRVG-11134 : Interface "192.168.56.30" on node "xzxt1" is not able to communicate with interface "192.168.56.31" on node "xzxt2"PRVG-11134 : Interface "192.168.56.30" on node "xzxt1" is not able to communicate with interface "192.168.56.30" on node "xzxt1"Checking subnet "192.168.56.0" for multicast communication with multicast group "224.0.0.251"...PRVG-11134 : Interface "192.168.56.31" on node "xzxt2" is not able to communicate with interface "192.168.56.31" on node "xzxt2"PRVG-11134 : Interface "192.168.56.31" on node "xzxt2" is not able to communicate with interface "192.168.56.30" on node "xzxt1"PRVG-11134 : Interface "192.168.56.30" on node "xzxt1" is not able to communicate with interface "192.168.56.31" on node "xzxt2"PRVG-11134 : Interface "192.168.56.30" on node "xzxt1" is not able to communicate with interface "192.168.56.30" on node "xzxt1"Checking subnet "10.10.10.0" for multicast communication with multicast group "230.0.1.0"...PRVG-11134 : Interface "10.10.10.91" on node "xzxt2" is not able to communicate with interface "10.10.10.91" on node "xzxt2"PRVG-11134 : Interface "10.10.10.91" on node "xzxt2" is not able to communicate with interface "10.10.10.90" on node "xzxt1"PRVG-11134 : Interface "10.10.10.90" on node "xzxt1" is not able to communicate with interface "10.10.10.91" on node "xzxt2"PRVG-11134 : Interface "10.10.10.90" on node "xzxt1" is not able to communicate with interface "10.10.10.90" on node "xzxt1"Checking subnet "10.10.10.0" for multicast communication with multicast group "224.0.0.251"...PRVG-11134 : Interface "10.10.10.91" on node "xzxt2" is not able to communicate with interface "10.10.10.91" on node "xzxt2"PRVG-11134 : Interface "10.10.10.91" on node "xzxt2" is not able to communicate with interface "10.10.10.90" on node "xzxt1"PRVG-11134 : Interface "10.10.10.90" on node "xzxt1" is not able to communicate with interface "10.10.10.91" on node "xzxt2"PRVG-11134 : Interface "10.10.10.90" on node "xzxt1" is not able to communicate with interface "10.10.10.90" on node "xzxt1"............

[Solution]
[Root @ xzxt1 network-scripts] # vi ifcfg-eth0
-- Remove GATEWAY = 192.168.56.1
DEVICE = eth0
ONBOOT = yes
BOOTPROTO = static
IPADDR = 192.168.56.30
NETMASK = 255.255.255.0

[Root @ xzxt1 network-scripts] # vi ifcfg-eth1
-- Remove GATEWAY = 10.10.10.1
DEVICE = eth1
ONBOOT = yes
BOOTPROTO = static
IPADDR = 10.10.10.90
NETMASK = 255.255.255.0

After the server is restarted, the problem does not occur again.

Original Works are from the blog of "Deep Blue blog". You are welcome to reprint them. Please note the following source when reprinting them. Otherwise, you will be held legally liable for copyright.

Deep Blue blog: http://blog.csdn.net/huangyanlong/article/details/40735481