topic Re: Procurve Default routing in Switches, Hubs, and Modems

Procurve Default routing

Sethuram — Mon, 26 Apr 2010 12:57:23 GMT

I am configuring default routing on 5406 switch.

Two routers are connected to the same VLAN on the switch. The IPs for VLAN and connecting router interfaces are with /23 mask. I have configured a default route and a static route.

ip route 0.0.0.0 0.0.0.0 10.21.21.250
ip route 10.21.22.0 255.255.254.0 10.21.21.254

Default route is working fine. The static route is not forwarding the packets to the interface 10.21.21.254. Is there anything else to be configured?

I am using the image K.14.34

Re: Procurve Default routing

Mohammed Faiz — Tue, 27 Apr 2010 05:31:40 GMT

Hi,

Have you checked that the route is actually in your routing tables?
"sh ip route"

Re: Procurve Default routing

Sethuram — Tue, 27 Apr 2010 12:51:37 GMT

Hi Mohammed,

Below is the "sh ip route" output.

Destination Gateway VLAN Type Sub-Type Metric Dist.
------------------ --------------- ---- --------- ---------- ---------- -----
0.0.0.0/0 10.21.21.250 7 static 1 1
10.21.20.0/23 Server & NW ... 7 connected 1 0
10.21.22.0/23 10.21.21.254 7 static 1 1
127.0.0.0/8 reject static 0 0
127.0.0.1/32 lo0 connected 1 0

Further I am able to ping the switch IP 10.21.23.254 from the switch 10.21.21.249. When I connect a laptop and ping the IP 10.21.23.254 I get a message "10.21.21.249 : destination net unreachable".

Re: Procurve Default routing

Mohammed Faiz — Tue, 27 Apr 2010 13:20:40 GMT

Can you post the up the running config for your switch?

Re: Procurve Default routing

Sethuram — Wed, 28 Apr 2010 11:43:48 GMT

hostname "Router-1"
module 1 type J8702A
module 2 type J8702A
module 3 type J8706A
interface B1
name "Uplink to Internet Router"
exit
interface B23
name "Trunk Port to Access Switch"
exit
interface B24
name "Trunk Port to Access Switch"
exit
interface A1
name "Link to Router-2" "
exit
interface A2
name "Uplink to Voice Gateway"
exit
trunk B23-B24 Trk1 LACP
ip routing
vlan 1
name "DEFAULT_VLAN"
untagged B19-B22,C1-C24
tagged Trk1
no untagged A1-A24,B1-B18
no ip address
exit
vlan 7
name "Server & NW VLAN"
untagged A1-A24,B1-B18
ip helper-address 10.19.135.220
ip helper-address 10.19.135.222
ip helper-address 10.23.45.5
ip helper-address 10.21.21.220
ip address 10.21.21.249 255.255.254.0
tagged Trk1
exit
ip route 0.0.0.0 0.0.0.0 10.21.21.250
ip route 10.21.22.0 255.255.254.0 10.21.21.254

management-vlan 7
no autorun
password manager
password operator

Re: Procurve Default routing

Mohammed Faiz — Wed, 28 Apr 2010 11:54:02 GMT

Ok, so I'm assuming that the laptop that you connected was on VLAN 1?

Re: Procurve Default routing

Sethuram — Wed, 28 Apr 2010 12:03:18 GMT

I connected the laptop to vlan 7

Re: Procurve Default routing

Mohammed Faiz — Wed, 28 Apr 2010 13:12:12 GMT

Oh, ok, so what IP address does the laptop get?
What is the device 10.21.21.254 and what port is it connected to the 5406 on?

Re: Procurve Default routing

Sethuram — Wed, 28 Apr 2010 13:44:35 GMT

Laptop IP 10.21.21.150/23
GW - 10.21.21.249
Connected to port B16

Re: Procurve Default routing

Mohammed Faiz — Wed, 28 Apr 2010 13:50:52 GMT

And which port is 10.21.21.254 connected to?

Re: Procurve Default routing

Sethuram — Wed, 28 Apr 2010 13:56:38 GMT

It's not 10.21.21.254. Its 10.21.23.254. It is in a different location and connected through a 4Mb link. From the switch 10.21.21.249 I can ping this IP. This is the HP switch at the other end. I cannot ping from the laptop connected to the vlan7 / port b16.

Re: Procurve Default routing

Mohammed Faiz — Wed, 28 Apr 2010 14:06:20 GMT

Your static route for 10.21.23.254 points to 10.21.21.254

"ip route 10.21.22.0 255.255.254.0 10.21.21.254"

I'm trying to picture where this lies.
I've not really come across a setup where traffic is routed a second within the same subnet.

Re: Procurve Default routing

Gerhard Roets — Wed, 28 Apr 2010 20:31:07 GMT

Hi Sethuram

Well interisting issue you have one quick thing.

I suspect your default route is not working 100%. You might want to review that.

Since all the clients are plugged into vlan 7 which is the management vlan and as per the procurve Advanced Traffic Management Guide is not routable. This is bound to be your issue.

HTH

Re: Procurve Default routing

Sethuram — Wed, 05 May 2010 07:47:17 GMT

Hi Gerhard,

This resolved all my problems. Thanks a ton.