Can't ping after setting IP address in OpenSolaris

Mark_667 · 10-11-2011, 05:12 AM

I'm trying to setup an OpenSolaris 2009 VM I've managed to assign an IP address and ifconfig -a includes the following line:

inet 192.98.215.80 --> 255.255.255.0 netmask ffffff00

but I'm unable to ping in or out. I'm new to OpenSolaris and don't understand what else I'd need to do just to be able to ping it?

jlinkels · 10-11-2011, 05:39 AM

What VM are you using? VirtualBox doesn't allow pinging if you have set up the network adapter as NAT.

jlinkels

Mark_667 · 10-11-2011, 05:42 AM

I'm using Hyper-V, the virtual network config looks fine and is working OK on other VMs so I'm thinking it's an Open Solaris problem. I keep getting 'ICMP host unreachable from gateway 192.98.215.80' when trying to ping out.

Edit: After doing this it output the following to the command line:

opensolaris in.routed[537]: route 255.255.255.0 --> 192.98.215.80 nexthop is not directly connected

What does this mean? I'm not sure if it's relevant but /etc/resolv.conf has been populated with the correct IP addresses for our DNS servers automatically.

jlinkels · 10-11-2011, 08:29 AM

Now I am just a poor Linux guy and don't know if Solaris has the same ideas about networking but let me try.

What host are you trying to ping? Is it in the 192.98.215.nnn range? It should be because your subnet is 255.255.255.0

What does the route -n command show (if that exists?) You should see at least:

Code:

Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
192.98.215.80     0.0.0.0         255.255.255.0   U     1      0        0 eth0
0.0.0.0           192.98.215.xxx  0.0.0.0         UG    0      0        0 eth0

The red IP address should be an address in this range. Is it?

jlinkesl

Mark_667 · 10-11-2011, 09:16 AM

#netstat -rn gave:

Code:

Routing Table: IPv4
	Destination	Gateway		Flags	Ref	Use	Interface
255.255.255.0		192.98.215.80	UH	1	0	dnet0
127.0.0.1		127.0.0.1	UH	1	66	lo0

The address I'm trying to ping is on the same subnet, I'm just trying to get basic network connectivity working here. Does the above output mean anything to anyone?

jlliagre · 10-11-2011, 10:07 AM

Please post the output of:

Code:

ifconfig -a
traceroute target_IP
dladm show-link
dladm show-ether

Mark_667 · 10-11-2011, 11:17 AM

Code:

ifconfig -a
traceroute target_IP
dladm show-link
dladm show-ether

#ifconfig -a
lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index
 1
 		inet 127.0.0.1 netmask ff000000
 dnet0: flags=1000851<UP,POINTTOPOINT,RUNNING,MULTICAST,IPv4> mtu 1500 index 2
 	inet 192.98.215.80 --> 255.255.255.0 netmask ffffff00
 	ether 0:15:5d:c8:482a
 
 <more loop back stuff here>
 
 traceroute <target_IP>
 traceroute to <target_IP> (<target_IP>), 30 hops max, 40 byte packets
  1 192.98.215.80 (192.98.215.80) 1.376 ms !H 0.419 ms !H 0.315 ms !H
#

#dlam show-link
bash: dlam: command not found
#

jlinkels · 10-11-2011, 12:15 PM

See? jlliagre knows Solaris, while I don't

But he asked for the output of dladm and you have a typo in that command (writing dlam instead of dladm)

jlinkels

jlliagre · 10-11-2011, 03:38 PM

Indeed

In any case, the dnet0 interface is configured in POINTTOPOINT mode which is the reason why you can't ping or do anything useful with it.

This should temporarily fix the issue:

Code:

ifconfig dnet0 unplumb
ifconfig dnet0 plumb
ifconfig dnet0 192.98.215.80 netmask 255.255.255.0 broadcast 192.98.215.255 up

For a permanent one, have a look at /etc/hostname.dnet0