Message icmp in Firewall

[Jose_129]

I have a server rp7405 and the administrator of the network informs to me that log into firewall this reporting messages ICMP produced by the server every three minutes approximately. It is normal?

Regards,

Jose

[Jose_129]

Any news

JC

[Ron Kinner]

What you are seeing is normal. It is a function of the Dead Gateway Detection. HPUX pings a gateway every 3 minutes to see if it is still alive. If the gateway doesnot reply then HPUX will assume it is dead and will not send any packets to it.

You can turn it off with ndd.

ndd -set /dev/ip ip_ire_gw_probe 0


To make the change permanent you can edit /etc/rc.config.d/nddconf

TRANSPORT_NAME[0]=ip
NDD_NAME[0]=ip_ire_gw_probe
NDD_VALUE[0]=0

(Use the next higher integer if you already have entires in nddconf.)

Ron

[Jose_129]

Ron Kinner,

I will have any problem in setting a ip_ire_gw_probe 0.

Regards,

JC

[Ron Kinner · Accepted solution]

No. The dead gateway feature is just an optional feature that HP decided to turn on by default. By pinging the gateway every three minutes it will know that the gateway is dead and will possibly use an alternative (though how it decides what to use I do not know. You would think that the metric would be used in this case but I have been told that it doesn't look at it except when gated is running.) Most people who require this degree of reliability will run two routers with HSRP. Turning it off only removes the feature. It does not effect anything else.

Ron