This looks like a tough routing issue

thesunlover · 10-25-2012, 08:45 AM

Hi, The default gateway (172.17.220.1) cannot be pinged via the default interface bond0 (172.17.220.231), but can be pinged via interface eth1 (10.201.135.73).

Quote:

# ping -I eth1 172.17.220.1
PING 172.17.220.1 (172.17.220.1) from 10.201.135.73 eth1: 56(84) bytes of data.
64 bytes from 172.17.220.1: icmp_seq=0 ttl=255 time=5.48 ms
64 bytes from 172.17.220.1: icmp_seq=1 ttl=255 time=0.523 ms

# ping -I bond0 172.17.220.1
PING 172.17.220.1 (172.17.220.1) from 172.17.220.231 bond0: 56(84) bytes of data.
From 172.17.220.231 icmp_seq=1 Destination Host Unreachable
From 172.17.220.231 icmp_seq=2 Destination Host Unreachable

Ping is supposed to work with the default interface bond0. Because the virtual interface bond0 can be pinged by systems in the same subnet, bond0 is working (right?). There must be a routing issue. Here is the interfaces info:

Quote:

# cat /etc/sysconfig/network-scripts/ifcfg-bond0
DEVICE=bond0
IPADDR=172.17.220.231
NETMASK=255.255.252.0
GATEWAY=172.17.220.1
ONBOOT=yes
BOOTPROTO=static
USERCTL=no

# cat /etc/sysconfig/network-scripts/ifcfg-eth1
DEVICE=eth1
IPADDR=10.201.135.73
NETMASK=255.255.248.0
ONBOOT=yes
BOOTPROTO=static

Please help. Thank you much in advance!

nz

KinnowGrower · 10-25-2012, 06:38 PM

Did you activated the Kernel module named bonding?

I had followed This article and it works fine for me. And do the server has eth0 interface as well?.

You can check the status of bonding with the command

Code:

cat /proc/net/bonding/bond0

thesunlover · 10-26-2012, 08:20 AM

Because the IP (172.17.220.231) on the virtual interface bond0 can be pinged by systems in the same subnet, bond0 and bonding service are working, right? Here is the process info:

Quote:

# cat /proc/net/bonding/bond0
Ethernet Channel Bonding Driver: v2.6.3-rh (June 8, 2005)

Bonding Mode: fault-tolerance (active-backup)
Primary Slave: None
Currently Active Slave: eth4
MII Status: up
MII Polling Interval (ms): 100
Up Delay (ms): 200
Down Delay (ms): 200

Slave Interface: eth4
MII Status: up
Link Failure Count: 0
Permanent HW addr: 00:11:0a:59:b7:e8

To simplify the issue, I disable the 2nd slave interface eth7. That should make no difference.

Thank you!

KinnowGrower · 10-27-2012, 10:45 AM

So eth4 is slave interface for bonding.
Can you please show the configuration file for eth4?

thesunlover · 10-29-2012, 08:05 AM

Here you are:

Quote:

# cat ifcfg-eth4
DEVICE=eth4
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
MASTER=bond0
SLAVE=yes
BOOTPROTO=none

Thanks!

KinnowGrower · 10-30-2012, 09:24 PM

Can you show the output of ifconfig and route -n ?