ARP Problem w/subnet

robinhood1995 · 05-13-2002, 10:52 AM

Hi Gang,

RH7.2

I am having problem to setup a arp for antoher subnet mask.

Here is the route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
172.16.1.0 * 255.255.255.0 U 0 0 0 eth0
127.0.0.0 * 255.0.0.0 U 0 0 0 lo
default 172.16.1.1 0.0.0.0 UG 0 0 0 eth0

here is the hosts file entry
172.16.40.186 HW10

I tried a
arp -s 172.16.40.186 00:20:4A:64:77:9B
SIOCSARP: Network is unreachable

What am I missing.

Thanks

siddiqu · 05-13-2002, 02:35 PM

Hi..

U can not put static MAC entry for other subnet. by default it will forward all the packets other than ur subnet to ur gateway. U can put arp static entry for ur local subnet.

Siddiqu.T

robinhood1995 · 05-13-2002, 03:02 PM

Hello,

Do you mean I can't do anything about it even if the subnet is a a class B?

Thanks

siddiqu · 05-13-2002, 09:02 PM

Hi..

In general only we can add arp static entry for local subnet(ie connected subnets). ohters we cant. In your routing table u have only one network.

Siddiqu.T