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Cisco router HWIC-4ESW vlan config

rjcm
Level 1
Level 1

Good morning everyone.
I needed your help to understand if it is possible to configure a HWIC interface... so that it has access to a vlan configured on the same router, but on a sub-interface of an L3 interface. I also attach a packet tracer file with the scenario.

1841_hwic.png

I want PC (192.168.99.56) to be able to communicate with others on the same VLAN and, of course, with the router interface 192.168.99.254, which is on the same equipment. I tried to configure via SVI and create the VLANs interfaces but for that I need to have at least one device connected so that the VLAN interface is UP but that doesn't happen.

Thank you.

7 Replies 7

pman
Spotlight
Spotlight

Hi,

 

on router0

  • connect PC-PT to port fa0/1/3 - already done In your configuration, well done
  • connect switch0 to port fa0/1/0 - the only thing you need to change

 

interface FastEthernet0/1/0

switchport access vlan 99

switchport mode access

no shut

!

interface FastEthernet0/1/3

switchport access vlan 99

switchport mode access

no shut

!

 

PC-PT

C:\>ping 192.168.99.23

Pinging 192.168.99.23 with 32 bytes of data:

Reply from 192.168.99.23: bytes=32 time=1ms TTL=128

Reply from 192.168.99.23: bytes=32 time=1ms TTL=128

Reply from 192.168.99.23: bytes=32 time<1ms TTL=128

 

Good Morning and thank you.
Yes, that way it works but I didn't want a second connection between the router and the switch, that brings a L2 loop.

It's possible withou second connection?

Thanks for your feedback, can you expand a little and explain how did you come to the conclusion that there is L2 loop?

 

Switch# show span vlan 99

VLAN0099

Spanning tree enabled protocol ieee

Root ID Priority 32867

Address 0001.6408.B226

This bridge is the root

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

 

Bridge ID Priority 32867 (priority 32768 sys-id-ext 99)

Address 0001.6408.B226

Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec

Aging Time 20

 

Interface         Role               Sts              Cost          Prio.Nbr            Type

---------------- ---- --- --------- -------- ----------------------

Fa0/1             Desg             FWD             19             128.1               P2p

Fa0/24           Desg             FWD             19             128.24             P2p

 

topology.PNG

 

 

Hi. 

Sorry, because i add a second link between router and switch and keep the router f0/0.99 connected to switch

1841_hwic2.png

From the picture I can see that you assigned the IP to VLAN99 and stopped using the L3 interface, why?
I have to test but I think I really have to use the L3 interface in trunk because, in the real scenario, this vlan is also used in a VM, whose interface is trunked.


@rjcm wrote:

From the picture I can see that you assigned the IP to VLAN99 and stopped using the L3 interface, why?


why not?

 

in the real scenario, this vlan is also used in a VM,.


In your topology PC-PT supposed to simulate a VM?

Yes, PC-PT (192.168.99.23) will be a VM.

Excellent,
In terms of topology this should look something like this:
https://tamlx.wordpress.com/2015/07/20/vmware-bai-11-cau-hinh-vlan-vsphere-5-5/

 

And in packet tracker should look something like this:

 

esx_top.PNG

  

Of course there are a number of ways to implement this solution, for example you can move the layer 3 (.254/24 - default gateway of the vm) to the layer 3 switch (3560-24ps) for example.