topic Re: Installed Sim 7.2.4 Got IP from DHCP but can not communicate in Simulator Discussions

Installed Sim 7.2.4 Got IP from DHCP but can not communicate

andrew_nomura — Thu, 05 Jun 2025 07:07:26 GMT

Hi,

I just installed Ontap Sim on Linux box and everything worked except can not communicate on network..

Ontapsim> ifconfig -a
ns0: flags=848043<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
        inet 147.85.180.50 netmask 0xffffff00 broadcast 147.85.180.255
        ether 00:50:56:09:e1:96 (Linux AF_PACKET socket)
ns1: flags=808042<BROADCAST,RUNNING,MULTICAST> mtu 1500
        ether 00:50:56:0a:e1:96 (Linux AF_PACKET socket)
lo: flags=1948049<UP,LOOPBACK,RUNNING,MULTICAST,TCPCKSUM> mtu 9188
        inet 127.0.0.1 netmask 0xff000000 broadcast 127.0.0.1

and

It can ping itself...

Ontapsim> ping 147.85.180.50
147.85.180.50 is alive

But nothing else,

Routing tables

Internet:
Destination      Gateway            Flags     Refs     Use Interface
default          147.85.180.254     UGS         2        5 ns0
127.0.0.1        127.0.0.1          UH          0        0 lo
147.85.180/24    link#1             UC          0        0 ns0
147.85.180.50    0:50:56:9:e1:96    UHL         0        8 lo
147.85.180.254   link#1             UHL         1        0 ns0
147.85.180.255   ff:ff:ff:ff:ff:ff UHL         0       26 ns0

Ontapsim> ping 147.85.180.254
ping: wrote 147.85.180.254 64 chars, error=Host is down
ping: wrote 147.85.180.254 64 chars, error=Host is down

Your advise is appreciated...

Re: Installed Sim 7.2.4 Got IP from DHCP but can not communicate

Darkstar — Tue, 12 Oct 2010 10:48:33 GMT

If you're running locally (on a workstation for example) you need to communicate with the simulator from another host.

However, pinging outside should work, I don't know what might cause this. Maybe your network card doesn't support promiscuous mode, or the switch discards all packets that it receives from a "forged" MAC address (because that is what the switch thinks it sees)

-Michael

Re: Installed Sim 7.2.4 Got IP from DHCP but can not communicate

ALESSIOTORELLI — Fri, 29 Mar 2013 13:59:18 GMT

did you manage to solve this issue?

I have the same problem...

Re: Installed Sim 7.2.4 Got IP from DHCP but can not communicate

maske — Fri, 29 Mar 2013 15:06:48 GMT

Disable selinux and iptables on the linux box. Also you can't access the IP of the sim from the machine running the VM. Setting up the VM nic in promiscuous mode also will help, sorry didn't read that you tried that until now.

Re: Installed Sim 7.2.4 Got IP from DHCP but can not communicate

ALESSIOTORELLI — Fri, 29 Mar 2013 15:38:07 GMT

Thanks for your answer.

iptables and selinux already disabled.

The nic is put in promisc mode by the simulator when I start it.

It seems the simulator does not respond to arp requests...

Re: Installed Sim 7.2.4 Got IP from DHCP but can not communicate

ALESSIOTORELLI — Fri, 29 Mar 2013 17:33:30 GMT

ok I managed to solve: we had two nic eth0 and eth1 in bond. If you use a slave nic in the simulator, then it is not capable to communicate. So we modified setup.sh in order to allow the simulator to use bond0 as its nic.

Then it worked