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rkbcontrol
Beginner

unable to create int vlan xxx

I am unable to create int vlan xxx on ISR 4331 router, its not recognizing the cmd: int vlan ?  

R1(config)#int vlan ?
% Unrecognized command

Vlan1    unassigned    YES     unset     administratively    down   down

 

kindly advice

2 ACCEPTED SOLUTIONS

Accepted Solutions
paul driver
VIP Mentor

Hello

FYI -
interface x/x
description vlan 1
ip address x.x.x.x y.y.y.y


interface x/x.10
description vlan 10
encapsulation dot1Q 10
ip address x.x.x.x y.y.y.y

interface x/x.20
description vlan 20
encapsulation dot1Q 20
ip address x.x.x.x y.y.y.y

etc...



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future

View solution in original post

Hello @rkbcontrol ,

you have not any etherswitch module so you need to use VLAN based subinterfaces connecting to a switch port configured as a L2 trunk.

The router configuration has been provided by @paul driver 

 

Your GE ports are router interfaces that can support subinterfaces . You cannot define interface of type VLAN .

 

int gi0/0.222

enc dot1q 222

ip address x.x.x.x 255.255.255.0

 

 

 

Hope to help

Giuseppe

 

View solution in original post

9 REPLIES 9
Leo Laohoo
VIP Community Legend

Routers do not understand "interface vlans".  

r1#sh vlan

VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1         default    active
222      test        active

 

layer 2 vlan is active now how do I manage layer 3

 

Hello @rkbcontrol ,

as noted by @Leo Laohoo  routers do not use SVI interface VLANs unless you have installed an etherswitch module

 

can you post a show version to see if you have such a module ?

show inventory

 

Please note that show vlans works on a router that has subinterfaces on a routed port too.

 

on the other hand some of these modules are actually stand alone switches and you need to connect to them in some way to create the interface Vlan inside the etherswitch module.

 

Hope to help

Giuseppe

 

#sh inventory
NAME: "Chassis", DESCR: "Cisco ISR4331 Chassis"
NAME: "Power Supply Module 0", DESCR: "250W AC Power Supply for Cisco ISR 4330"
NAME: "Fan Tray", DESCR: "Cisco ISR4330 Fan Assembly"
NAME: "module 0", DESCR: "Cisco ISR4331 Built-In NIM controller"
NAME: "NIM subslot 0/1", DESCR: "NIM-1MFT-T1/E1 - T1/E1 Serial Module"
NAME: "subslot 0/1 db module 0", DESCR: "PVDM4-32 Voice DSP Module"
NAME: "NIM subslot 0/2", DESCR: "NIM-4FXS Voice Analog Module"
NAME: "PVDM subslot 0/4", DESCR: "PVDM4-32 Voice DSP Module"

NAME: "NIM subslot 0/0", DESCR: "Front Panel 3 ports Gigabitethernet Module"
NAME: "module 1", DESCR: "Cisco ISR4331 Built-In SM controller"
NAME: "module R0", DESCR: "Cisco ISR4331 Route Processor"
NAME: "module F0", DESCR: "Cisco ISR4331 Forwarding Processor"


Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(3)S4b, RELEASE SOFTWARE (fc1)

Hello @rkbcontrol ,

you have not any etherswitch module so you need to use VLAN based subinterfaces connecting to a switch port configured as a L2 trunk.

The router configuration has been provided by @paul driver 

 

Your GE ports are router interfaces that can support subinterfaces . You cannot define interface of type VLAN .

 

int gi0/0.222

enc dot1q 222

ip address x.x.x.x 255.255.255.0

 

 

 

Hope to help

Giuseppe

 

View solution in original post

balaji.bandi
VIP Master

Cisco IOS Software, ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 15.5(3)S4b, RELEASE SOFTWARE (fc1)

You do not have any Layer2 switch modules for the VLAN to work, so you have option only Dot1.q sub interface was the option.

BB

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paul driver
VIP Mentor

Hello

FYI -
interface x/x
description vlan 1
ip address x.x.x.x y.y.y.y


interface x/x.10
description vlan 10
encapsulation dot1Q 10
ip address x.x.x.x y.y.y.y

interface x/x.20
description vlan 20
encapsulation dot1Q 20
ip address x.x.x.x y.y.y.y

etc...



kind regards
Paul

Please rate and mark posts accordingly if you have found any of the information provided useful.
It will hopefully assist others with similar issues in the future

View solution in original post