08-15-2023 09:32 AM - last edited on 08-15-2023 12:05 PM by Translator
Hi all,
I'm running Packet Tracer 8.2.1, and I have the following network. Two VLANs (VLAN4 and VLAN5), one Switch 2960, and one Router 1941.
The VLAN networks are:
VLAN4 172.16.0.0/18 - PC IP 172.16.0.2 - Gateway 172.16.0.1
VLAN5 172.16.96.0/19 - PC IP 172.16.96.2 - Gateway 172.16.96.1
On the Switch, I have set as follows,
VLAN4 --> Fa0/x range 1 - 10 (the PC is connected to Fa0/1)
VLAN5 --> Fa0/x range 11-15 (the PC is connected to Fa0/11)
The Gig0/1 is the trunk connected to the Gig0/1 of the Router.
Now, on the Router I have set 2 subinterfaces with encapsulation dot1Q. No shutdown.
Every time I try to ping one PC on VLAN4 to another PC on VLAN5, for example
ping 172.16.96.2
it failed and on the Router I have the following error message.
"There is no subinterface with this vlan enabled"
Any idea about how to solve this?
Thanks in advance!
Solved! Go to Solution.
08-15-2023 10:03 AM - last edited on 08-15-2023 12:06 PM by Translator
Hello @Bruno Giorgio,
Please share subinterface config.
It should look like:
interface gig 0/1.10
encapsulation dot1q 4
ip address 172.16.0.1 mask
!
interface gig 0/1.20
encapsulation dot1q 5
ip address 172.16.96.1 mask
08-15-2023 10:54 AM - last edited on 08-15-2023 12:09 PM by Translator
Encapsulation Vlan ID
is wrong for both
vlan 4 and 5
as interface ID does not matter but
encapsulation ID
does matter. Command
encapsulation dot1Q.x
will mark or assign all traffic to belong to
vlan x
Note that interface number does not have to match
encapsulation
number but makes sense when it does.
Change 10 to 4 and 20 to 5 like
interface GigabitEthernet0/1.4
encapsulation dot1Q 4
interface GigabitEthernet0/1.5
encapsulation dot1Q 5
Regards, ML
**Please Rate All Helpful Responses **
08-15-2023 09:38 AM
how is your sub interface config look like. make sure PC FW also disabled.
check below config need to be done for the sub-interface :
08-15-2023 09:50 AM
Zip your lab PT file and attach it here
08-15-2023 10:03 AM - last edited on 08-15-2023 12:06 PM by Translator
Hello @Bruno Giorgio,
Please share subinterface config.
It should look like:
interface gig 0/1.10
encapsulation dot1q 4
ip address 172.16.0.1 mask
!
interface gig 0/1.20
encapsulation dot1q 5
ip address 172.16.96.1 mask
08-15-2023 10:04 AM
Hi balaji.bandi ,
Thank you, I will read your link and let you know.
Hi Martin L ,
Sure. Attached you'll find my lab file.
08-15-2023 10:54 AM - last edited on 08-15-2023 12:09 PM by Translator
Encapsulation Vlan ID
is wrong for both
vlan 4 and 5
as interface ID does not matter but
encapsulation ID
does matter. Command
encapsulation dot1Q.x
will mark or assign all traffic to belong to
vlan x
Note that interface number does not have to match
encapsulation
number but makes sense when it does.
Change 10 to 4 and 20 to 5 like
interface GigabitEthernet0/1.4
encapsulation dot1Q 4
interface GigabitEthernet0/1.5
encapsulation dot1Q 5
Regards, ML
**Please Rate All Helpful Responses **
08-15-2023 11:59 AM
You are great guys!
Thank you so much for your support!
08-15-2023 12:03 PM
You're very welcome @Bruno Giorgio.
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