routing via HP Procurve 2650

Posted on 2007-11-30
Last Modified: 2010-04-21
I have a decent size network with 600+ hosts on five subnets, not my design. The fifth subnet is the remnants of an old IP structure with is IP’d with public addresses. What I need to accomplish is intranet routing between the four private subnets and the remaining public subnet. I have any one or a combination of a HP Procurve 5308xl with two open ports, a full Procurve 2650 that has been sitting on a shelf unused, or an old Cisco 2600 with a single Ethernet port.

I have searched and searched, and have attempted just about every configuration posted on the net, multi-netting with secondary IPs, with both the 2600 and 2650. Putting all of the IPs in a single VLAN, or several VLANS, with static routes and without static routes.

The routing between the four 10.x subnets is never an issue, it is the 199.176 public addresses (which include my Internet connection) that I can never seem to get to route. When we started our IP change over I built a Linux router with an old computer and several nics. This was supposed to be temporary, that was nearly six months ago, thus what I am asking is this, what is the most effective way using the equipment that I have to setup a “temporary” route through and around my network.  

Thanks in advance
Question by:MoisdTech
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LVL 21

Expert Comment

ID: 20382008
please provide ipconfig settings for 199.176 subnet.
can you draw quick connection scheme for your network?

Author Comment

ID: 20382255
No sense in a picture is is pretty simple. An AT&T router that sits outside of our firewall routed a four subnet 199.176.X.X network. As I said I did not design it and have no authority to fix the design, at least yet. Now with our current format, I have been routing all of the 10.X.X.X traffic through a Linux box with several nics. Since posting the original message I have gotten the 199. to route to the other subnets, but not forward to the AT&T router for internet. The IP config of the 199.176 network is IP address, 199.176.241.X/24 gw: 199.176.241.X dns: 199.176.241.y. Hope this helps.

I know I need to look at the config of the HP and see why is is not using the ip route 199.176.241.x to gain access to the internet, am I going to need NAT turned on, and configured?  
LVL 21

Expert Comment

ID: 20382325
to get private ips out your need NAT, it is for sure. Home your linux box can do that.

but what for routing can you send configuration of your hp switch
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Author Comment

ID: 20382442
There is not much to show i have not locked it down yet:

Startup configuration:

; J4899A Configuration Editor; Created on release #H.10.50

hostname "ProCurve Switch 2650"
mirror-port 3
ip routing
snmp-server community "public" Unrestricted
vlan 1
   name "DEFAULT_VLAN"
   untagged 2-50
   ip address
   ip address
   ip address
   ip address
   ip address
   tagged 1
   ip igmp forward 1-50
ip route 199.176.241.xx
ip route
LVL 21

Expert Comment

ID: 20382475
as i understand, you can ping all subnets from this switch....
now you should try traceroute from one pc in network to pc in another network
we'll try to see where packets are dropped

Author Comment

ID: 20382761
Yes I can currently ping all subnets just cannot get traffic to forward to the world.

Here is a trace from subnet to subnet

Tracing route to over a maximum of 30 hops

  1     1 ms    <1 ms    <1 ms

  2    <1 ms    <1 ms    <1 ms

Trace complete.

The first hop is the switch that I am routing with...

This is what I get when I trace the Internet facing router

Tracing route to over a maximum of 30 hops

  1     *        *        *     Request timed out.

  2     *        *        *     Request timed out.

  3     *        *        *     Request timed out.

LVL 21

Accepted Solution

from_exp earned 250 total points
ID: 20388249
it means your router (default gw) is unaware about your networks.
you should reconfigure it

Author Closing Comment

ID: 31411906
I found a method to cut out the routing on the HP procurve and simply route with the 2600. Thanks for the direction.

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