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Users Cannot Communicate After VLAN Mapping Is Configured ?

I Cannot Communicate After VLAN Mapping Is Configured ? I use the switch S5700-28C-SI most time on the network.

This section describes the troubleshooting flowchart and provides a step-by-step troubleshooting procedure to use when users cannot communicate after VLAN mapping is configured.
 
Common Causes
Users in VLAN 6 need to communicate with users in VLAN 5 over
an ISP network. The carrier assigns VLAN 10 as the stack VLAN (S-VLAN). Single-tag VLAN mapping is configured on GE0/0/1 of SwitchC and SwitchD to map customer VLANs (CVLANs) 5 and 6 to S-VLAN 10.

 
After VLAN mapping is configured on the interfaces, users in different VLANs cannot
communicate with each other. This fault is commonly caused by one of the following:
1 The translated VLAN (specified by map-vlan) has not been created.
2 The interfaces configured with VLAN mapping are not added to the translated VLAN.
3 The translated VLAN ID configured on SwitchC and SwitchD is different from the SVLAN ID assigned by the carrier.
4 The interfaces configured with VLAN mapping are faulty.
 
Troubleshooting Procedure
NOTE
Saving the results of each troubleshooting step is recommended. If troubleshooting fails to correct the fault, you will have a record of your actions to provide Huawei technical support personnel.
 
Procedure
Step 1 Check that the translated VLAN (specified by map-vlan) has been created.
Run the display vlan command on SwitchC and SwitchD to check whether the translated VLAN has been created.
l If the translated VLAN has not been created, run the vlan command to create it.
l If the translated VLAN has been created, go to step 2.
 
Step 2 Check that the interfaces configured with VLAN mapping have been added to the translated VLAN in tagged mode.
Run the display this command on the interfaces configured with VLAN mapping to check
whether the interfaces have been added to the translated VLAN in tagged mode.
 
NOTE
1 VLAN mapping can only be configured on a trunk or hybrid interface, and the interface must be added to the translated VLAN in tagged mode.
2 If a range of original VLANs is specified by vlan-id1 to vlan-id2 on an interface, the interface must be added to all the original VLANs in tagged mode, and the translated VLAN cannot have a VLANIF interface.
3 Limiting MAC address learning on an interface may affect N:1 VLAN mapping on the interface.
4 If the interfaces configured with VLAN mapping have not been added to the translated
VLAN in tagged mode, run the port trunk allow-pass vlan or port hybrid tagged vlan
command in the interface views to add the interfaces to the translated VLAN in tagged
mode.
5 If the interfaces have been added to the translated VLAN in tagged mode, go to step 3.
 
Step 3 Check that the translated VLAN ID configured on SwitchC and SwitchD is the same as the SVLAN ID assigned by the carrier.
Run the display this command on the interfaces configured with VLAN mapping to check
whether the translated VLAN ID is the same as the S-VLAN ID assigned by the carrier.
 
If the translated VLAN ID on an interface is different from the S-VLAN ID assigned by
the carrier, run the undo port vlan-mapping vlan command on the interface to delete the
VLAN mapping configuration, and then run the port vlan-mapping vlan command to set
the translated VLAN ID to the S-VLAN ID.
 
If the translated VLAN ID is the same as the S-VLAN ID assigned by the carrier, go to
step 4.
 
Step 4 Check that the user-side interfaces are in the C-VLANs.
Run the display vlan vlan-id command on SwitchA and SwitchB to check whether the userside interfaces are in the C-VLANs.
1 If the user-side interfaces are not in the C-VLANs, run the port trunk allow-pass vlan,
port hybrid tagged vlan, or port default vlan command to add the interfaces to the CVLANs.
2 If the user-side interfaces are in the C-VLANs, go to step 5.
 
Step 5 Collect the following information and contact Huawei technical support personnel.
1 Results of the preceding troubleshooting procedure
2 Configuration files, log files, and alarm files of the Switches
----End
 
The popular Huawei switch you maybe interested, please refer to below links:
Huawei S5700




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Reader Comments  (3)

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Caitlin James   | June 1st 2017 at 1496310602

It’s at minimal strange that they would give you IP's that weren't in an indistinguishable range from your WAN association and not an entire subnet. You should simply make static 1 to 1 NAT interpretations. Buy Custom Essays. I truly can't give you specifics, as you didn't give any, yet in a 1 to 1 NAT you arrange your switch to dependably decipher a specific open IP to a specific private one, and the other way around.
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Gayzo   | July 28th 2017 at 1501231496

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Rollins Jack | August 17th 2017 at 1503036071

Much of the time, the VLAN identifiers on the casings of an interface's parcels are not right. VLAN translation, or VLAN revise, enables you to configure bidirectional VLAN identifier translation with a rundown on outlines touching base on and Assignment Writing Services leaving from a logical interface. This gives you a chance to use interesting VLAN identifiers inside and keep uplegacy VLAN identifiers on logical interfaces.

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