Routing Problem - no route to host

[amreek bansal]

Hi, Can someone help please, I have 2 servers which are trying to set up connectivity between. The servers are on 2 different networks, the firewalls have been opened to allow access. Its now the routing on the 2 servers which need to be set up and i'm not totally sure on what routes to add.

As when i try to ssh or ftp from server 1 to server2 i get no route to host message.

Details of the servers are the following:

I'm trying to connect from server1 to server2 (i.e ssh and ftp).

server1 :

IP add: 10.93.58.135
Gateway: 10.93.58.129

netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
10.93.58.128 0.0.0.0 255.255.255.192 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 10.93.58.129 0.0.0.0 UG 0 0 0 eth1

[root@LFHG-M-TRANS01 root]# ifconfig -a

eth1 Link encap:Ethernet HWaddr 00:50:56:8F:50:72
inet addr:10.93.58.135 Bcast:10.93.58.191 Mask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:21926421 errors:1194 dropped:7352 overruns:0 frame:0
TX packets:10571981 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:1024700470 (977.2 Mb) TX bytes:697895955 (665.5 Mb)
Interrupt:19 Base address:0x1480


server2 :

IP add: 10.254.5.70
Gateway: 148.253.97.33

Routing tables
Destination Gateway Flags Refs Interface Pmtu
127.0.0.1 127.0.0.1 UH 0 lo0 4136
10.254.5.70 10.254.5.70 UH 0 lan5 4136
148.253.97.34 148.253.97.34 UH 0 lan900 4136
10.254.3.39 10.254.3.39 UH 0 lan3 4136
156.150.219.128 10.254.5.65 UGH 0 lan5 0
148.253.97.32 148.253.97.34 U 2 lan900 1500
10.254.3.32 10.254.3.39 U 2 lan3 1500
10.254.5.64 10.254.5.70 U 2 lan5 1500
156.150.0.0 10.254.5.65 UG 0 lan5 0
127.0.0.0 127.0.0.1 U 0 lo0 0
default 148.253.97.33 UG 0 lan900 0

Please help to resolve this. Thanks

[johnsonpk]

Hi Amreek,

lets make it simple

server 1

I/P :10.93.58.135
netmask :255.255.255.192
default gateway:10.93.58.129

Server 2

I/P :10.254.5.70
netmask :?????
default gateway:148.253.97.33

we need more info

does the default gw 10.93.58.129 of server1 has routing entries to 10.254.5 network?If not what is the router ip which has that routing table?


please paste netstat -in of second server (it seems there is more that one interface configured with ip)

Johnson

[V. Nyga]

Hi,

you already got an answer how to add a route:
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1341468

so what's the problem?

See 'man route' about the route-command.

You have to tell the server1 over which gateway he reaches server2 and vice versa.

Else some more hints would be nice.

Volkmar

[amreek bansal]

Hi Johnson,

Thanks for your reply, the output of netstat -in is shown below

netstat -in

Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
lan3 1500 10.254.3.32 10.254.3.39 16027972 0 46245723 0 0
lo0 4136 127.0.0.0 127.0.0.1 4606183 0 4606183 0 0
lan5 1500 10.254.5.64 10.254.5.70 17543651 0 16726929 0 0
lan900 1500 148.253.97.32 148.253.97.34 1683718340 0 1861802118 0 0


netstat -rn
Routing tables
Destination Gateway Flags Refs Interface Pmtu
127.0.0.1 127.0.0.1 UH 0 lo0 4136
10.254.5.70 10.254.5.70 UH 0 lan5 4136
148.253.97.34 148.253.97.34 UH 0 lan900 4136
10.254.3.39 10.254.3.39 UH 0 lan3 4136
156.150.219.128 10.254.5.65 UGH 0 lan5 0
148.253.97.32 148.253.97.34 U 2 lan900 1500
10.254.3.32 10.254.3.39 U 2 lan3 1500
10.254.5.64 10.254.5.70 U 2 lan5 1500
156.150.0.0 10.254.5.65 UG 0 lan5 0
127.0.0.0 127.0.0.1 U 0 lo0 0
default 148.253.97.33 UG 0 lan900 0

[johnsonpk]

Hi,

Need answer for this

does the default gw 10.93.58.129 of server1 has routing entries to 10.254.5 network?If not what is the router ip which has that routing table?

thanks!
Johnson

[amreek bansal]

Hi Johnson,

To answer your question

"does the default gw 10.93.58.129 of server1 has routing entries to 10.254.5 network?If not what is the router ip which has that routing table? "

Is this checked from netstat -rn ?

Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
10.93.58.128 0.0.0.0 255.255.255.192 U 0 0 0 eth1
169.254.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth1
0.0.0.0 10.93.58.129 0.0.0.0 UG 0 0 0 eth1

If not, then can you advise on how to check this please ?

[johnsonpk]

Hi,
since the ip 10.93.58.129(router) is out side of your server ,u wont be able to fetch the info,better contact the Network admin and ask him to have a look.

if he can set that routes on the router(10.93.58.129), you need not to do anything on server side

Thanks!!
Johnson

[Laurent Menase]

from hpux:
traceroute -i lan900 -s 148.253.97.34 10.93.58.135

because since your default address in on 148.* network, the default ip used will be the 148.* one when connection from hpux to the linx

If you really want to be able to use 10.254.5.70 then try a
traceroute -i lan900 -s 10.254.5.70 10.93.58.135

be sure also that your routers knows that 10.254.5.70 is your hpux system.

You also could network traces to see where the messages are sent to. - nettl or tcpdump)