route add error :Network unreachable

[malay boy]

Hello,
My lan interface are 10.210.21.x with netmask 255.255.255.248 . I want to add the route : 10.210.21.148 with netmask 255.255.255.248 to routing table.

I execute :
route add 10.210.21.148 255.255.255.248 10.210.21.1
(I will return error "Network Unreachable")

If I execute :
route add 10.210.21.148 255.255.255.248 10.210.21.1 1
(I added 1 hop,it will return the command back and i think it's a syntax error ).

Please advice or any document that could help.

.... mB :-)

[malay boy]

One more question:
If I put the route add,does the system will probe/ping the added route and if it failed and it will gave "Network Unreachable" ...
Uhm .. or how does this worked

Any help ..

regards
mB

[Biswajit Tripathy]

# route add 10.210.21.148 netmask 255.255.255.248 10.210.21.1 1

- Biswajit

[malay boy]

Hi Biswajit,
That's won't work.Try that before.It gave the command back with command syntax.

Thanks for replying.

But does the system will ping the gateway before putting in the route?.

regards
Arman Rahim

[Biswajit Tripathy]

As per usage, that should work and should not give
any syntax error.

# route add
usage: add destination [netmask mask] gateway [metric]

The gateway must be reachable from the host on
which you are running "route add" command.
Otherwise, there is no way the system can route
those packets.

- Biswajit

[Steven E. Protter]

I'd make sure the network hardware is correct.

The commands look good and there may be a problem with how the VLAN is done or the routers on the system you are trying to connect.

SEP

[Ron Kinner]

What version of HPUX are we talking about? There have been subtle variations in the route command syntax over the years. You may need the -net or -network command option. Also what IP address does your HP have? If not in the 10.210.21.2-6 range then it will not be able to use the .1 gateway with the 248 mask. You definitely need the metric of 1 to indicate the address is not local.

10.210.21.1 with a 248 mask is part of the subnet zero and is unusable on most HPUX without turning off subnet checking in ndd.

Ron

[Andrew Cowan]

In your original statement you said "10.210.21.x" was your IP-Address and yet you did not state the range that "x" was in. By doing the binary arithmetic that address must be in the range ".144-.151". Are you sre that your adapter falls within this subnet, otherwise the network would indeed by unreachable:

Example of subnet calculation:

11111 | 000 = 248
10010 | 000 = 144
10010 | 111 = 151