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Old 12-04-2012, 07:03 PM   #1
ssandip
LQ Newbie
 
Registered: Dec 2012
Posts: 2

Rep: Reputation: Disabled
Unhappy Suggestion Require: Linux VM to Windows Host


Hi,

We have a Centra OS VM running on Windows 2008 Hyper V Manager. The issue is Windows host can ping that Linux VM (122.99.114.4) but Linux VM cant ping Windows host (122.99.114.6). It can ping any other IP.

Followings are their IP config details. Any help to make these two servers to talk each other will be highly appreciated.

---------------------------------------------------------
Linux VM
[root@mail ~]# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
122.99.114.0 0.0.0.0 255.255.255.248 U 0 0 0 eth0
122.99.114.0 122.99.114.1 255.255.255.0 UG 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 122.99.114.1 0.0.0.0 UG 0 0 0 eth0


[root@mail ~]# ipconfig -a
-bash: ipconfig: command not found
[root@mail ~]# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
122.99.114.0 0.0.0.0 255.255.255.248 U 0 0 0 eth0
122.99.114.0 122.99.114.1 255.255.255.0 UG 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 122.99.114.1 0.0.0.0 UG 0 0 0 eth0
[root@mail ~]# [root@mail ~]# netstat -rn
-bash: [root@mail: command not found
[root@mail ~]# Kernel IP routing table
-bash: Kernel: command not found
[root@mail ~]# Destination Gateway Genmask Flags MSS Window irtt Iface
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
0.0.0.0 122.99.114.1 0.0.0.0 UG 0 0 0 eth0
[root@mail ~]#

-bash: Destination: command not found
[root@mail ~]# 122.99.114.0 0.0.0.0 255.255.255.248 U 0 0 0 eth0
-bash: 122.99.114.0: command not found
[root@mail ~]# 122.99.114.0 122.99.114.1 255.255.255.0 UG 0 0 0 eth0
-bash: 122.99.114.0: command not found
[root@mail ~]# 169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
-bash: 169.254.0.0: command not found
[root@mail ~]# 0.0.0.0 122.99.114.1 0.0.0.0 UG 0 0 0 eth0
-bash: 0.0.0.0: command not found
[root@mail ~]# [root@mail ~]#
-bash: [root@mail: command not found
[root@mail ~]#
[root@mail ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:15:5D:72:02:03
inet addr:122.99.114.4 Bcast:122.99.114.7 Mask:255.255.255.248
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:37707842 errors:0 dropped:0 overruns:0 frame:0
TX packets:52520548 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2086486130 (1.9 GiB) TX bytes:3846093772 (3.5 GiB)
Interrupt:9 Base address:0xe000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1367278 errors:0 dropped:0 overruns:0 frame:0
TX packets:1367278 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:2379567446 (2.2 GiB) TX bytes:2379567446 (2.2 GiB)

WINDOWS
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.

C:\Users\Administrator>ipconfig

Windows IP Configuration


Ethernet adapter Local Area Connection 3:

Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::99a7:1f38:21cf:92d5%18
IPv4 Address. . . . . . . . . . . : 122.99.114.3
Subnet Mask . . . . . . . . . . . : 255.0.0.0
Default Gateway . . . . . . . . . : 122.99.114.1

Ethernet adapter Local Area Connection:

Connection-specific DNS Suffix . :
IPv4 Address. . . . . . . . . . . : 122.99.114.2
Subnet Mask . . . . . . . . . . . : 255.255.255.248
IPv4 Address. . . . . . . . . . . : 122.99.114.5
Subnet Mask . . . . . . . . . . . : 255.255.255.248
IPv4 Address. . . . . . . . . . . : 122.99.114.6
Subnet Mask . . . . . . . . . . . : 255.255.255.248
Default Gateway . . . . . . . . . : 122.99.114.1

Tunnel adapter isatap.{34960518-2F49-45A6-905E-F9EAD149D605}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter isatap.{A516E505-8284-44C8-9817-569504CF167A}:

Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :

Tunnel adapter 6TO4 Adapter:

Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2002:7a63:7202::7a63:7202
IPv6 Address. . . . . . . . . . . : 2002:7a63:7203::7a63:7203
IPv6 Address. . . . . . . . . . . : 2002:7a63:7205::7a63:7205
IPv6 Address. . . . . . . . . . . : 2002:7a63:7206::7a63:7206
Default Gateway . . . . . . . . . : 2002:c058:6301::c058:6301

Tunnel adapter Teredo Tunneling Pseudo-Interface:

Connection-specific DNS Suffix . :
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:309a:240c:859c:8dfc
Link-local IPv6 Address . . . . . : fe80::309a:240c:859c:8dfc%16
Default Gateway . . . . . . . . . :

---------------------------------------------------------

Regards,

Sandy

Last edited by ssandip; 12-04-2012 at 07:17 PM.
 
Old 12-04-2012, 07:12 PM   #2
jefro
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Registered: Mar 2008
Posts: 10,991

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My guess is that Windows 2008 has ping (icmp reply) blocked by default.
 
Old 12-04-2012, 07:16 PM   #3
ssandip
LQ Newbie
 
Registered: Dec 2012
Posts: 2

Original Poster
Rep: Reputation: Disabled
Thanks Jefro, but disabling Windows firewall also did not help. Could it be routing issue?
 
  


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