Thứ Tư, 17 tháng 7, 2013

How to configure GS-2224 for Q-in-Q



Functional Description  :

* Service providers can use Q-in-Q to transparently pass Layer 2 VLAN traffic from a customer site, through the service provider network, to another customer site without removing or changing the customer VLAN tags

* The double Q-in-Q tags can indicate different information , the inner tag indicates the user, the outer tag indicates carrier provider , the Q-in-Q packet with two tags can traverse the carrier’s network and the inner tag is transmitted transparently .

Test Scenario :

Switch will be used for Leased Line Service,
They are already using Tag VLAN (802.1q) ,so they would like to add another Tag with out changing existing VLAN.

Typical Application :
An abstract illustration to above application :

GS-2224 Configure Steps :

Step 1: Configure VLAN mode at “ Tag mode ”.


Step 2: Create VLAN 20 and VLAN 40
       Configure Port 3 .Port 4 and Port 24 are belong to VLAN 20
Configure Port 1 .Port 2 and Port 24 are belong to VLAN 40
Port 24 is uplink port .
The above setting  is configured at SW1(Left side) and SW2(Right side).

 

Step 3 : Configure tag identifier as “0x8100 “ OR “0x88a8”
       (There is no specific regulation to choose tag identifier, the only precautions
needs to be noticed whether link partner aware of the tag identifier).

Step 4 : Examine” VLAN aware” check box are activity on all ports .
Step 5 : Configure PVID
       Port1 and Port2 are PVID=40 and their port role are VLAN access mode .
       Port3 and Port4 are PVID=20 and their port role are VLAN access mode .
       The port role of Port24 is VLAN trunk mode.
       
Step 6 : Configure double tag function to “Customer mode“ at Port1 ~ Port 4.
   (The following picture with configure port1 and port2 only for example ).

Step 7 : Configure double tag function to “Service mode“ at Port24.
( Double Tag:
Double-tag mode belongs to the tag-based mode, however, it would treat all frames as the untagged ones, which means that tag with PVID will be added into all packets. Then, these packets will be forwarded as Tag-based VLAN. So, the incoming packets with tag will become the double-tag ones. Scroll to enable the function and default is Disable.
Customer port :
The parameter is for this port connects to customer site .
Service port :
The parameter is for this port connects between at carrier sites. )



Test Criterion :

* Outgoing packets from port 24 (pours packets from port1 to port24) are carrying double tag.
The packets captured 1.jpg .~  packets captured 4.jpg is for reference.

Test Result  :  PASS

* Outgoing packets from port 24 (pours packets from port1 to port24) are carrying correct outer tag and inter tag .
The packets captured 1.jpg .~  packets captured 4.jpg is for reference.

Test Result  :  PASS

* Packets can be forwarded via both switches with enable Q in Q.

Test Result  :  PASS

* Left Company A and Right Company A can communicate each other .

Test Result  :  PASS

* Left Company B and Right Company B can communicate each other .

Test Result  :  PASS

*Outgoing packets from port 1(packets are forwarded via both switches to another customer site ) are carrying correct tag .
The packets captured 5.jpg .~  packets captured 6.jpg is for reference.

Test Result  :  PASS








Print all relevant configuration at CLI  

GS-2224(vlan)# sh group
Vlan mode is tag-based.

Vlan Name    : Default
Vlan ID      : 1
IGMP Aware   : disable
Private VLAN : disable
GVRP Propagation : disable
Member : 1  2  3  4  5  6  7  8  9  10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Vlan Name    : vlan 20
Vlan ID      : 20
IGMP Aware   : disable
Private VLAN : disable
GVRP Propagation : disable
Member : 3  4  24

Vlan Name    : vlan 40
Vlan ID      : 40
IGMP Aware   : disable
Private VLAN : disable
GVRP Propagation : disable
Member : 1  2  24

GS-2224(vlan)# sh port

Tag Identifier:0x8100

 Port   PVID  Ingress   Frame Type   Role     Untag Vid   Aware   double
              Filtering                                             tag
------ ------ --------- ---------- --------- ----------- ------- --------
   1       40   disable      all     Access         0      true customer
   2       40   disable      all     Access         0      true customer
   3       20   disable      all     Access         0      true customer
   4       20   disable      all     Access         0      true customer

   5        1   disable      all     Access         0      true  disable
   6        1   disable      all     Access         0      true  disable
   7        1   disable      all     Access         0      true  disable
   8        1   disable      all     Access         0      true  disable
   9        1   disable      all     Access         0      true  disable
  10        1   disable      all     Access         0      true  disable
  11        1   disable      all     Access         0      true  disable
  12        1   disable      all     Access         0      true  disable
  13        1   disable      all     Access         0      true  disable
  14        1   disable      all     Access         0      true  disable
  15        1   disable      all     Access         0      true  disable
  16        1   disable      all     Access         0      true  disable
  17        1   disable      all     Access         0      true  disable
  18        1   disable      all     Access         0      true  disable
  19        1   disable      all     Access         0      true  disable
  20        1   disable      all     Access         0      true  disable
  21        1   disable      all     Access         0      true  disable
  22        1   disable      all     Access         0      true  disable
  23        1   disable      all     Access         0      true  disable
  24        1   disable      all      Trunk         0      true  service

Labels:

Không có nhận xét nào:

Đăng nhận xét

Đăng ký: Đăng Nhận xét (Atom)