Hi All, I'm using VxSim and i'm currently using the userland application (the terminal) to communicate with the VxSim. I'm trying to 'ping" from the VxSim to the local linux host IP. It fails to connect saying, "no answer from host". However, Ping from host to the VxSim works perfect. I can ping the tap0 interface from the VxSim (Sim creates this tap0 interface during launch to communicate with a userland application) My question is, "How to make the Simulator ping/communicate to the local host IP (not the loopback interface)? " . i thought of bridging the tap0 and eth0 interface so that packets from tap0 goes to eth0 and hence i can ping from sim to host. Is this correct? but once briding the entire system is hanged!! Please can you let me know what do i need to check or do i need to add some bridge to make ping work from vxsim to host. Thanks in Advance..
ping from vxsim to host linux machine
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ping from vxsim to host linux machine
by Akshatha » Sat, 06 Jun 2009 21:49:36 GMT
Re: ping from vxsim to host linux machine
by Thike » Thu, 11 Jun 2009 23:42:11 GMT
It should be done using IP forwarding On Linux hosts, run the following with root permissions: $ # echo "1" > /proc/sys/net/ipv4/ip_forward or, edit /etc/sysconfig/network and add the following line: FORWARD_IPV4=yes Then, restart the host. For more informations, refer Wind River VxWorks Simulator's Users Guide (Section: Accessing the VxWorks Simulator from a Remote Host) Its me, Thike
Re: ping from vxsim to host linux machine
by Akshatha » Fri, 12 Jun 2009 20:29:24 GMT
Hi Thike,
I had done that. The problem is ping from host to sim works fine but
sim to host doesnt work.
so i launched daemon,sim in the same subnet as host and then ping
works fine.
Referred from vxsim manual "Running the Vxworks Simulator on the Local
Network
".
i just followed these steps:
changes vxsimnetd.conf file line
# SUBNET_ADDRESS = "192.168.200.0";
to
SUBNET_ADDRESS = "ur host subnet";
ex: my host ip is 199.30.19.218 so SUBNET_ADDRESS=199.30.19.0
Now launch daemon with new config as
./vxsimnet start
3)launch vxsim with ip starting with smaew subnet as host
as SIM_IP=192.168.200. to SIM_IP=<host subnet> Ex:199.30.19. if my
host ip is 199.30.19.218.
i dint have to do any bridging here..
ok i had to remove "-a" from file as below:
On the Linux box, as root:
cd /etc/xinetd.d
vi gccftp
Change the "server_args" line; remove the "-a" option.
Restart xinetd.
You can do it with the GUI or by running "/etc/init.d/xinetd
restart".
But i had a query here, instead of doing all thsi there is one more
way to do as mentioned in the manual,
1)Indicate that you can reach the 1host subnet 199.30.19..0 subnet
through the host interface 192.168.200.254
-> routec "add -net 199.30.19.0/24 192.168.200.254"
2)on every remote host, indicate that host 199.30.19.218 is the
gateway to reach the 192.168.200.0 network:
route add -net 192.168.200.0 netmask 255.255.255.192 gw 199.30.19.218
but i cannot ping with these steps. Am i missing something here:
hers the route show from my sim and linux host:
Note: my host ip:199.30.19.218 SIM ip: 192.168.200.1
in sim:
-> mRouteShow
Destination/Pfx Gateway Flags RefCnt Use Proto Tos I/
f
10.0.0.0/30 10.0.0.1 2000101 0 0 2 0
simnet4
47.0.0.0/8 192.168.200.254 2010003 0 0 1 0
simnet0
127.0.0.1 127.0.0.1 2200005 0 2 2 0
lo0
169.254.0.0/24 169.254.0.15 2000101 1 0 2 0
ipEnd0
169.254.1.0/27 169.254.1.15 2000101 0 0 2 0
ipEnd1
192.168.200.0/24 192.168.200.1 2000101 2 0 2 0
simnet0
199.30.19.0/24 192.168.200.254 2010803 0 2 1 0
simnet0
value = 0 = 0x0
->
in linux:
=========
[akshath@akshath-]$ /sbin/route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref
Use Iface
192.168.200.0 akshath-OME 255.255.255.192 UG 0 0
0 eth0
192.168.200.0 * 255.255.255.192 U 0 0
0 eth0
199.30.19.192 * 255.255.255.192 U 0 0
0 eth0
192.168.200.0 * 255.255.255.0 U 0 0
0 tap0
169.254.0.0 * 255.255.0.0 U 0 0
0 eth0
default 199.30.19.193 0.0.0.0 UG 0 0
0 eth0
Thanks,
Re: ping from vxsim to host linux machine
by Akshatha » Tue, 23 Jun 2009 20:52:02 GMT
n Jun 11, 4:29m, Akshatha < XXXX@XXXXX.COM > wrote:
> >o
> SUBNET_ADDRESS = "ur host s>bnet";
> ex: my host ip is 199.30.19.218 so UBNET_ADDRESS=19>.30.19.0
> Now launch daemon with new >on>ig as
>
> ./vxsim>et>start
>
> 3)launch vxsim with ip starting with smaew subne> as host
> as SIM_IP=192.168.200. lt;o IM_IP=<>ost subnet> x:199.30.1>. f my
> host ip is 199.3>.1>.218.
>
> dint have to do any bridgi>g >ere..
>
> ok i had to remove "-a" from file >s >elow:
>
> On the Linux box,>as root:
> d /etc>xinetd.d
> gt;i gccftp
> hange the "server_args" line; remove the "-a> o>tion.
>
> estar> xinetd.
> ou can do it with the GUI or by running "/etc/init>d/xinetd
> >es>art".
>
> But i had a query here, instead of doing all thsi there is>one more
> way to do as mentioned in th> manual,
> 1)Indicate that you can reach the 1host subnet 199.30.19.>0 subnet
> through the host interface 192.16>.2>0.254
> -> routec "add -net 199.30.19.0/24 192.168>20>.254"
>
> 2)on every remote host, indicate that host 199.30.19.2>8 is the
> gateway to reach the 192.168.200.0>ne>work:
>
> route add -net 192.168.200.0 netmask 255.255.255.192 w 199.>0.>9.218
>
> but i cannot ping with these steps. Am i missing someth>ng here:
> hers the route show from my sim and li>ux>host:
>
> Note: my host ip:199.30.19.218 SIM ip: 192.>68.200.1
> -> m>outeShow
> Destination/Pfx ateway Flags efCnt Use>>ro>o Tos I/
> f
>
> 10.0.0.0/30 0.0.0.1 gt;000101 gt; 2 0
> simnet4
> 47.0.0.0/8 >92.168.200>254 2010003 1 0
> simnet0
> 1>7.0.0.> 27.0.0.1 2200005 2 gt;0
> lo0 >> 169.254.0.0/24 169.254.0.15 000101 > 2 > 0
> ipEnd0
> 169.254.1.0/27 169.254.1.15 000101 >0 gt;2 0
> ipEnd1
> 192.168.200.0/24 192.168.200.1>2000101 >2 gt;2 > 0> >>simnet0
> 1>9.30.19.0/24>192.168.200.254 2010803 gt; 1 0
> simn>t0
> value = 0 = 0x0
> ->
>
> in linux:
> ========= >> [akshath@a>shath-]$ /sbin/route
> Kernel IP routing table
> Destin>tion >ateway Genmask Flags Metric Ref
> U>e Iface
> 0 eth0
> 192.168.200.0 * 255.2>5.255.192>U 0
> 0 eth0
> 199.30.19.192 * gt;gt;255.255.255.192 U 0
> 0 eth0
> 192.168>200.0 *>> 255.255.255.0 U 0
> 0 tap0
> 169.254.0.0 * 255.255.0.0 U 0
> 0 eth0
> default 199.30.19.193 0.0.0.0 UG
Hi All,
Is there any other way to connect to host from vxsim without having
to do any settings as root (As described in vxsim simulator user guide
section 6.4.1 and 6.4.2)
> >o
> SUBNET_ADDRESS = "ur host s>bnet";
> ex: my host ip is 199.30.19.218 so UBNET_ADDRESS=19>.30.19.0
> Now launch daemon with new >on>ig as
>
> ./vxsim>et>start
>
> 3)launch vxsim with ip starting with smaew subne> as host
> as SIM_IP=192.168.200. lt;o IM_IP=<>ost subnet> x:199.30.1>. f my
> host ip is 199.3>.1>.218.
>
> dint have to do any bridgi>g >ere..
>
> ok i had to remove "-a" from file >s >elow:
>
> On the Linux box,>as root:
> d /etc>xinetd.d
> gt;i gccftp
> hange the "server_args" line; remove the "-a> o>tion.
>
> estar> xinetd.
> ou can do it with the GUI or by running "/etc/init>d/xinetd
> >es>art".
>
> But i had a query here, instead of doing all thsi there is>one more
> way to do as mentioned in th> manual,
> 1)Indicate that you can reach the 1host subnet 199.30.19.>0 subnet
> through the host interface 192.16>.2>0.254
> -> routec "add -net 199.30.19.0/24 192.168>20>.254"
>
> 2)on every remote host, indicate that host 199.30.19.2>8 is the
> gateway to reach the 192.168.200.0>ne>work:
>
> route add -net 192.168.200.0 netmask 255.255.255.192 w 199.>0.>9.218
>
> but i cannot ping with these steps. Am i missing someth>ng here:
> hers the route show from my sim and li>ux>host:
>
> Note: my host ip:199.30.19.218 SIM ip: 192.>68.200.1
> -> m>outeShow
> Destination/Pfx ateway Flags efCnt Use>>ro>o Tos I/
> f
>
> 10.0.0.0/30 0.0.0.1 gt;000101 gt; 2 0
> simnet4
> 47.0.0.0/8 >92.168.200>254 2010003 1 0
> simnet0
> 1>7.0.0.> 27.0.0.1 2200005 2 gt;0
> lo0 >> 169.254.0.0/24 169.254.0.15 000101 > 2 > 0
> ipEnd0
> 169.254.1.0/27 169.254.1.15 000101 >0 gt;2 0
> ipEnd1
> 192.168.200.0/24 192.168.200.1>2000101 >2 gt;2 > 0> >>simnet0
> 1>9.30.19.0/24>192.168.200.254 2010803 gt; 1 0
> simn>t0
> value = 0 = 0x0
> ->
>
> in linux:
> ========= >> [akshath@a>shath-]$ /sbin/route
> Kernel IP routing table
> Destin>tion >ateway Genmask Flags Metric Ref
> U>e Iface
> 0 eth0
> 192.168.200.0 * 255.2>5.255.192>U 0
> 0 eth0
> 199.30.19.192 * gt;gt;255.255.255.192 U 0
> 0 eth0
> 192.168>200.0 *>> 255.255.255.0 U 0
> 0 tap0
> 169.254.0.0 * 255.255.0.0 U 0
> 0 eth0
> default 199.30.19.193 0.0.0.0 UG
Hi All,
Is there any other way to connect to host from vxsim without having
to do any settings as root (As described in vxsim simulator user guide
section 6.4.1 and 6.4.2)
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