Issue Description
Customer configure L3VPN on NE40E but he was unable to ping CE imediately after he add the "ip binding vpn-instance test" command on the interface that connects the CE device.
NE40E works as PE and it works on version V600R007C00SPC300. I will post some configuration snip.
#
ip vpn-instance test
description test
ipv4-family
route-distinguisher xxx:yyy
routing-table limit 15000 simply-alert
vpn-target xxx:1 export-extcommunity
vpn-target xxx:1 import-extcommunity
traffic-statistics enable
#
interface Eth-Trunk1.310
vlan-type dot1q 310
ip binding vpn-instance test
ip address x.22.17.97 255.255.255.224
#
Handling Process
As soon as customer is adding the "ip binding vpn-instance test" command under interface view the connectivity between CE and PE fails.
First thing we would to check is related to license content. L3VPN for NE40E is license controlled so it's important to check this part. Below we can see "display license" command content.
dis license
Active license : cfcard:/LIC800259881C9367570600002-A91B_NetEngine40EX8.dat
License state : Normal
Revoke ticket : No ticket
Bayonette AS
Product name : NetEngine40E X8
Product version : V600R007
License Serial No : LIC2014042603B000
Creator : Huawei Technologies Co., Ltd.
Created Time : 2014-04-26 14:04:26
Feature name : CRFEA1
Authorize type : COMM
Expired date : PERMANENT
Trial days : 60
Item name Item type Value Description

---

LCR5BTOA02 Resource 1 LPUI51BENHANCE
Master board license state: Normal.
<ra-nyd>dis license state
Info: Current license state is Normal.
<ra-nyd>dis license resource usage
Info: Active License on master board: cfcard:/LIC800259881C9367570600002-A91B_NetEngine40EX8.dat
FeatureName | ConfigureItemName | ResourceUsage
CRFEA1 LCR5BTOA02 0/1
The license resource contains the enhance function which will transform the board LPUI-51-B to enhanced which will allow using L3VPN.
Root Cause
So license content include require function, but the customer didn't upgrade the slot accordingly.
Solution
To enable the content, its required to perform the following setup.
# Enable L3VPN and MVPN on the interface board in slot 7.
<HUAWEI> system-view
[HUAWEI] service-enhance slot 7
Info: Caution!!! Are you sure to do this operation?[Y/N]?y
Info: Enable the L3VPN and MVPN successfully!
Suggestions
if you plan to use L3VPN through multiple slots you will need to enable service-enhance command on all slots, but note that the license content should allow you configure the function for more than 1 slot.