aix下11g RAC安装INS-41112

aix下安装11g rac报错：
[code]INS-41112 Specified network interface doesnt maintain connectivity across cluster nodes.
•PRVF-6020 : Different MTU values used across network interfaces in subnet [/code]
查看2节点相关网卡的MTU参数，发现2边不一致，
[code]root@hxcrmdb1[/tmp] # lsattr -El en18
alias4 IPv4 Alias including Subnet Mask True
alias6 IPv6 Alias including Prefix Length True
arp on Address Resolution Protocol (ARP) True
authority Authorized Users True
broadcast Broadcast Address True
monitor off Enable/Disable monitor attribute True
mtu 9000 Maximum IP Packet Size for This Device True
mtu_bypass off Enable/Disable largesend for virtual Ethernet True
netaddr 135.10.54.220 Internet Address True
netaddr6 IPv6 Internet Address True
netmask 255.255.255.0 Subnet Mask True
prefixlen Prefix Length for IPv6 Internet Address True
remmtu 576 Maximum IP Packet Size for REMOTE Networks True
rfc1323 Enable/Disable TCP RFC 1323 Window Scaling True
security none Security Level True
state up Current Interface Status True
tcp_mssdflt Set TCP Maximum Segment Size True
tcp_nodelay Enable/Disable TCP_NODELAY Option True
tcp_recvspace Set Socket Buffer Space for Receiving True
tcp_sendspace Set Socket Buffer Space for Sending True
thread off Enable/Disable thread attribute True

grid@hxcrmdb2:/oracle/grid$lsattr -El en18
alias4 IPv4 Alias including Subnet Mask True
alias6 IPv6 Alias including Prefix Length True
arp on Address Resolution Protocol (ARP) True
authority Authorized Users True
broadcast Broadcast Address True
monitor off Enable/Disable monitor attribute True
mtu 1500 Maximum IP Packet Size for This Device True
mtu_bypass off Enable/Disable largesend for virtual Ethernet True
netaddr 135.10.54.221 Internet Address True
netaddr6 IPv6 Internet Address True
netmask 255.255.255.0 Subnet Mask True
prefixlen Prefix Length for IPv6 Internet Address True
remmtu 576 Maximum IP Packet Size for REMOTE Networks True
rfc1323 Enable/Disable TCP RFC 1323 Window Scaling True
security none Security Level True
state up Current Interface Status True
tcp_mssdflt Set TCP Maximum Segment Size True
tcp_nodelay Enable/Disable TCP_NODELAY Option True
tcp_recvspace Set Socket Buffer Space for Receiving True
tcp_sendspace Set Socket Buffer Space for Sending True
thread off Enable/Disable thread attribute True[/code]

发现一个是1500，一个是9000
将节点1的9000修改为1500，然后就通过了
[code]root@hxcrmdb1[/tmp] # chdev -l en18 -a mtu=1500
en18 changed
root@hxcrmdb1[/tmp] # lsattr -El en18
alias4 IPv4 Alias including Subnet Mask True
alias6 IPv6 Alias including Prefix Length True
arp on Address Resolution Protocol (ARP) True
authority Authorized Users True
broadcast Broadcast Address True
monitor off Enable/Disable monitor attribute True
mtu 1500 Maximum IP Packet Size for This Device True
mtu_bypass off Enable/Disable largesend for virtual Ethernet True
netaddr 135.10.54.220 Internet Address True
netaddr6 IPv6 Internet Address True
netmask 255.255.255.0 Subnet Mask True
prefixlen Prefix Length for IPv6 Internet Address True
remmtu 576 Maximum IP Packet Size for REMOTE Networks True
rfc1323 Enable/Disable TCP RFC 1323 Window Scaling True
security none Security Level True
state up Current Interface Status True
tcp_mssdflt Set TCP Maximum Segment Size True
tcp_nodelay Enable/Disable TCP_NODELAY Option True
tcp_recvspace Set Socket Buffer Space for Receiving True
tcp_sendspace Set Socket Buffer Space for Sending True
thread off Enable/Disable thread attribute True[/code]