Connect between untagged vlan to tagged vlan interface

  • 1
  • Question
  • Updated 1 year ago

I am using GNS3 and VirtualBox with Cumulux 3.1 to simulate the network test currently.

While try play around. I found that there are some problem when connect between untagged vlan to tagged vlan IP.

Following please find my config.

At Cumulus

swp1 connect to vPC host
swp4 connect to another Cisco switch.

cat interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

source /etc/network/interfaces.d/*.intf

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
auto eth0
#iface eth0 inet dhcp
iface eth0

auto swp1
iface swp1                       
        bridge-access 1001

auto swp2
iface swp2

auto swp3
iface swp3

auto swp4                          
iface swp4

auto swp4.1001
iface swp4.1001

auto peerlink
iface peerlink
        bond-slaves swp2 swp3

auto peerlink.4094
iface peerlink.4094
        clagd-priority 4096
##        clagd-backup-ip
        clagd-sys-mac 44:38:39:ff:00:01        

auto br0
iface br0
        bridge-vlan-aware yes
        bridge-ports peerlink swp1 swp4     
        bridge-stp on
        bridge-vids 1000-2999
        bridge-pvid 1

Cisco part

FastEthernet 1/0 connect to Cumulus
FastEthernet 1/1 connect to host

interface FastEthernet1/0
 switchport mode trunk          
interface FastEthernet1/1
 switchport access vlan 1001
 duplex full
 speed 100
interface Vlan1
 no ip address
interface Vlan1001
 ip address

Host <---> Host connection is able to PING

Switch <--> Switch connection is able to PING

However, when I try to PING between host or from Switch/Cumulus to.  It is fail.

I also tried to add

auto br0
iface br0.1001

instead of swp4.1001 also fail

What correct config I should do?

Photo of machiasiaweb


  • 900 Points 500 badge 2x thumb

Posted 1 year ago

  • 1
Photo of Scott Suehle

Scott Suehle, Alum

  • 3,772 Points 3k badge 2x thumb
Can the boxes see out of the setup? Is it just trying to bing back and forth that is  not working?