SVI Routing Query

[SathishkumarSaravanan0348]

Dear experts,

Attached is the topology which I created for the lab purpose.

I had configured IOU1 and IOU2 to act as the PC. That is by disabling "no ip routing" and "ip default-gateway" as 10.10.10.5 for IOU1 and 10.10.20.5 for IOU2.

The IOU3 switch serves as the L2 switch and I configured L3 VLAN 2 for management purpose. L2 vlan was created for vlan 10 and vlan 20.

The uplink from IOU2 and IOU4 was configured as the trunk link.

In IOU4 the SVI was configured for VLAN 10 and VLAN 20. (10.10.10.5- Vlan 10 and 10.10.20.5- Vlan 20)

Result:

1. I can ping the default gateway of 10.10.10.5 of vlan 10 from IOU1.

2. I can ping the default gateway of vlan 20 10.10.20.5 from IOU1. Vice versa I can do the same from IOU2.

3. But If I tried to ping the 10.10.20.1(which is the IP address of e0/2 of IOU2, ping is failing.

Note: I had enabled IP routing in IOU4 and from IOU4 I can see the route for the VLAN 10 and VLAN 20 and also the arp address table.

Why I could not able to ping the vlan 10 to vlan 20 (from 10.10.10.1 to 10.10.20.1)?

Thanks,

Sathish. 

[balaji.bandi]

Simple setup, it should work as expected as you explained everything configured.

just to check can you post below : from IOU4 (this is the device take decision where to send the packets between VLAN 10 and 20)

show run

show ip route

also traceroute is good tool for dianosis

traceroute from IOU1

traceroute 10.10.20.1  - check where it dropping.

[SathishkumarSaravanan0348]

Dear Balaji,

Thanks for your answers.

From IOU4 I could see the routing table for both segment 10.10.10.0/29 and 10.10.20.0/29.

The traceroute from IOU1for 10.10.20.1 is reaching the 10.10.10.5(which is the gateway for vlan 10) and after that packet drops.  Attached the screenshot for your reference.

[balaji.bandi]

One this i noticed was on the router you have ./29, on the diagram you have ./28 which one is correct.

Can you post all device below output :

IOU4 /1/2

show run interface vlan 10

show run interface vlan 20

show ip interface brief

[SathishkumarSaravanan0348]

Dear Balaji.

Please find the attached screenshot for the output.

Thanks.

[balaji.bandi]

provide all the information requested :

IOU4 /1/2   From IOU 4 and 1 and 2

show run

show ip route

show run interface vlan 10

show run interface vlan 20

show ip interface brief