Another VLAN Routing Post

Vlans communicate at Layer 2 of the OSI model.  

Layer 2 = Switch

Layer 3 = Router

When you put an IP on the interface that is connecting to the other device it essentially turns that into a Routed interface.  When you have both devices set up where you are routing between each other you would need to enable vlan routing on both devices.  

If you have your vlan and you client devices all connected on a switch level (connected with Trunk) then you would not need vlan routing enable to communicate between devices on the same vlan.

Here is some example commands:

console#  configure

console(config)#ip routing

console(config)# interface vlan 10

console(config-if-vlan10)# ip address 10.0.0.1 255.255.255.0

console(config-if-vlan10)# routing   (Enables routing for the specific vlan)

console(config-if-vlan10)# exit

console(config)# interface ethernet 1/g3

console(config-if-1/g3)# switchport access vlan 10

console(config-if-1/g3)# exit

console(config)# ip route 11.0.0.0 255.255.255.0 10.0.0.5

console(config)# exit

console# show ip route

Route Codes: R - RIP Derived, O - OSPF Derived, C - Connected, S - Static

      B - BGP Derived, IA - OSPF Inter Area

      E1 - OSPF External Type 1, E2 - OSPF External Type 2

      N1 - OSPF NSSA External Type 1, N2 - OSPF NSSA External Type 2

C      10.0.0.0/24 [0/0] directly connected,   vlan 10

S      11.0.0.0/24 [1/0] via 10.0.0.5,   vlan 10

or you can enable from the VLAN Database mode:

console(config)# ip routing

console(config)# interface vlan 10

console(config-if-vlan100)# ip address 172.16.100.1 /24

console(config-if-vlan100)# exit

console(config)# vlan database

console(config-vlan)# vlan routing 10

console(config-vlan)# end

Show IP Interface command reference:

console# show ip interface

Management Interface:

IP Address..................................... 192.168.2.1

Subnet Mask.................................... 255.255.255.0

Default Gateway................................ 0.0.0.0

Burned In MAC Address.......................... 00FC.E390.0000

Network Configuration Protocol Current......... None

Management VLAN ID............................. 1

Routing Interfaces:    

                        Netdir   Multi

Interface    IP Address      IP Mask         Bcast    CastFwd

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

vlan 10     172.16.0.1      255.255.0.0     Disable  Disable

Hope this helps,

Keep us updated

Here is my current config on both side of the Ethernet over Fiber Span

---------- Near Side -------------

show run

!Current Configuration:

!System Description "PowerConnect 6248P, 3.3.3.3, VxWorks 6.5"

!System Software Version 3.3.3.3

!Cut-through mode is configured as disabled

!

configure

vlan database

vlan 10

vlan routing 10 1

vlan association subnet 10.1.1.0 255.255.255.0 10

exit

stack

member 1 5

exit

ip address 192.168.200.230 255.255.252.0

ip default-gateway 192.168.200.81

ip routing

interface vlan 10

routing

ip address 10.1.1.1 255.255.255.0

exit                  

!

interface ethernet 1/g48

switchport mode general

switchport general acceptable-frame-type tagged-only

switchport general allowed vlan add 10

exit

exit

 console#show ip route

 Route Codes: R - RIP Derived, O - OSPF Derived, C - Connected, S - Static

       B - BGP Derived, IA - OSPF Inter Area

       E1 - OSPF External Type 1, E2 - OSPF External Type 2

       N1 - OSPF NSSA External Type 1, N2 - OSPF NSSA External Type 2

 C      10.1.1.0/24 [0/1] directly connected,   vlan 10

console#ping 10.1.1.2

 Pinging 10.1.1.2 with 0 bytes of data:

 ----10.1.1.2 PING statistics----

4 packets transmitted, 0 packets received, 100% packet loss

round-trip (msec) min/avg/max = <10/<10/<10

 console#ping 10.1.1.2 1

 Pinging 10.1.1.1 with 0 bytes of data:

 Reply From 10.1.1.1: icmp_seq = 0. time <10 msec.

Reply From 10.1.1.1: icmp_seq = 1. time <10 msec.

Reply From 10.1.1.1: icmp_seq = 2. time <10 msec.

Reply From 10.1.1.1: icmp_seq = 3. time <10 msec.

 ----10.1.1.1 PING statistics----

4 packets transmitted, 4 packets received, 0% packet loss

round-trip (msec) min/avg/max = <10/<10/<10

 ------------- FAR SIDE ---------------------

console#show run
!Current Configuration:
!System Description "Powerconnect 6248P, 3.2.1.3, VxWorks 6.5"
!System Software Version 3.2.1.3
!Cut-through mode is configured as disabled
!
configure
vlan database
vlan 10
vlan routing 10 1
vlan association subnet 10.1.1.0 255.255.255.0 10
exit
stack
member 1 5
member 2 5
member 3 5
member 4 2
exit
ip address 192.168.20.33 255.255.255.0
ip default-gateway 192.168.20.1
ip routing
interface vlan 10routing
ip address 10.1.1.2 255.255.255.0
exit
monitor session 1 destination interface 4/g26
monitor session 1 source interface 4/g48
monitor session 1 mode
!
interface ethernet 4/g30
description 'Fiber'
switchport mode general
switchport general acceptable-frame-type tagged-only
switchport general allowed vlan add 10
exit
exit

console#show ip route

Route Codes: R - RIP Derived, O - OSPF Derived, C - Connected, S - Static
       B - BGP Derived, IA - OSPF Inter Area
       E1 - OSPF External Type 1, E2 - OSPF External Type 2
       N1 - OSPF NSSA External Type 1, N2 - OSPF NSSA External Type 2

C      10.1.1.0/24 [0/1] directly connected,   vlan 10

console#ping 10.1.1.1
 Pinging 10.1.1.1 with 0 bytes of data:

----10.1.1.1 PING statistics----
4 packets transmitted, 0 packets received, 100% packet loss
round-trip (msec) min/avg/max = <10/<10/<10

console#ping 10.1.1.1 2
 Pinging 10.1.1.2 with 0 bytes of data:

Reply From 10.1.1.2: icmp_seq = 0. time <10 msec.
Reply From 10.1.1.2: icmp_seq = 1. time <10 msec.
Reply From 10.1.1.2: icmp_seq = 2. time <10 msec.
Reply From 10.1.1.2: icmp_seq = 3. time <10 msec.

----10.1.1.2 PING statistics----
4 packets transmitted, 4 packets received, 0% packet loss
round-trip (msec) min/avg/max = <10/<10/<10

I found that this ccommand was not required so I did a "no switchport general acceptable-frame-type tagged-only"

Thanks for the help.