CentOS6.5, 2 sets, the router configuration experiment, the basic configuration is as follows:
R40-10 eth0:192.168.0.40, eth1:10.0.0.40
R41-172 eth0:172.168.0.41, eth1:172.16.0.41

Zebra quagga two machines installation, configuration and rip configuration file is as follows:
The R40-10 zebra. The conf file
the hostname R40-10
The password 654321
The enable password 654321
The log file/var/quagga/zebra. The log

R40-10 ripd. Conf file
The hostname R40-10
The password 654321
The debug rip events
The debug rip packet
The router rip
Version 2
The network 10.0.0.0/8
Network 192.168.0.0/24
The network eth0
The network eth1
Interface eth0
No IP rip authentication mode
The log file/var/quagga/zebra. The log

R41-172 zebra. The conf file
The hostname R41-172
The password 654321
The enable password 654321
The log file/var/quagga/zebra. The log

R41-172 ripd. Conf file
The hostname R41-172
The password 654321
The debug rip events
The debug rip packet
The router rip
Version 2
The network along/16
Network 192.168.0.0/24
The network eth0
The network eth1
Interface eth0
No IP rip authentication mode
The log file/var/log/quagg/zebra. The log

Ripd service and zebra run normally, but two router's routing table is not to learn each other's routing entry,
And, in the operation and ripd zebra - d - d, display an error: can 't open logfile/var/log/quagg/zebra. The log
The file permissions to 777, the owner is the root, root,

The above configuration have what problem? Or what went wrong? Please help to look at, thank you.