On 09/30/2010 05:02 PM, John Doe wrote:
> From: Mitja MiheliÄ<mitja.mihelic@xxxxxxxx>
>> I am trying to use hping to chek the latency of our network.
>> Somehow things are not going to plan and I thought someone might be able
>> to shed some light on the subject.
>> Here is the setup:
>> (the IP addresses gvien here are fake, but they do represent the correct
>> state of the networking setup)
>> vlan interface IP mask
>> V2 eth0 192.168.20.20 32
>> V4 eth1 172.16.4.40 32
>> V6 eth2 172.16.6.60 32
>>
>> The default route is set to eth1.
>> The idea is to use eth2 for pinging only, the other two interfaces are
>> used by another service and management access.
> Could you show the ifconfig and route outputs...?
>
> JD
The Centos version is 5.5.
This is the kernel we are using
(http://rpms.mcnc.org/web100/el5/distro-compat/i386/):
2.6.18-164.15.1.el5.web100PAE #1 SMP Mon May 17 17:01:51 EDT 2010 i686
athlon i386 GNU/Linux
The IP addresses are presented as private addresses, netmasks are real.
Here is the ifconfig output:
[root@server ~]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:16:35:82:45:A0
inet addr:192.168.254.236 Bcast:192.168.254.239
Mask:255.255.255.240
inet6 addr: fe80::216:35ff:fe82:45a0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:139602 errors:0 dropped:0 overruns:0 frame:0
TX packets:58914 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:211203420 (201.4 MiB) TX bytes:4285647 (4.0 MiB)
Interrupt:186 Memory:dc000000-dc012800
eth1 Link encap:Ethernet HWaddr 00:16:35:82:45:A2
inet addr:192.168.254.244 Bcast:192.168.254.247
Mask:255.255.255.248
inet6 addr: fe80::216:35ff:fe82:45a2/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:15 errors:0 dropped:0 overruns:0 frame:0
TX packets:14 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1130 (1.1 KiB) TX bytes:1116 (1.0 KiB)
Interrupt:194 Memory:da000000-da012800
eth2 Link encap:Ethernet HWaddr 00:15:17:C5:84:4D
inet addr:192.168.254.18 Bcast:192.168.254.23
Mask:255.255.255.248
inet6 addr: fe80::215:17ff:fec5:844d/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29 errors:0 dropped:0 overruns:0 frame:0
TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2280 (2.2 KiB) TX bytes:1236 (1.2 KiB)
Memory:dfde0000-dfe00000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:21 errors:0 dropped:0 overruns:0 frame:0
TX packets:21 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:4240 (4.1 KiB) TX bytes:4240 (4.1 KiB)
And the route command output:
[root@server ~]# route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
192.168.18.122 192.168.254.225 255.255.255.255 UGH 0 0
0 eth0
192.168.254.16 0.0.0.0 255.255.255.248 U 0 0
0 eth2
192.168.254.240 0.0.0.0 255.255.255.248 U 0 0
0 eth1
192.168.18.160 192.168.254.225 255.255.255.240 UG 0 0
0 eth0
192.168.254.224 0.0.0.0 255.255.255.240 U 0 0
0 eth0
192.168.1.64 192.168.254.225 255.255.255.192 UG 0 0
0 eth0
192.168.1.128 192.168.254.225 255.255.255.128 UG 0 0
0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0
0 eth2
0.0.0.0 192.168.254.241 0.0.0.0 UG 0 0
0 eth1
--
Mitja
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