Dual-Link Backup In Layer 2 Networking And Configuration Notes - Huawei AC6605 Manual

AC6605 Access Controller
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1.3.6 Dual-Link Backup in Layer 2 Networking and Configuration
Notes
Layer 2 Chain Networking (Direct Forwarding)
Figure 1-6 Dual-link backup in Layer 2 chain networking (direct forwarding)
Access switch
As shown in Figure 1-6, the ACs are deployed between an aggregation switch and two access
switches on a Layer 2 network. Data packets from STAs are forwarded in direct mode. AC1 is
the active AC, and AC2 is the standby AC.
The configuration notes in this networking are as follows:

Issue 01 (2012-05-30)
Aggregation
AC1
IP: 19.19.19.1/24
AP
IP: 19.19.19.X
Configure the same AC ID and carrier ID for AC1 and AC2. Otherwise, after the active
AC fails, services cannot be switched to the standby AC because BSSIDs of the two ACs
are different. Run the following commands:
[AC6605_AC1] wlan ac-global ac id 999 carrier id ctc
[AC6605_AC2] wlan ac-global ac id 999 carrier id ctc
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BRAS
switch
VLAN 3010
VLAN 3931
IP: 19.19.19.X
1 Dual-Link Backup
VLAN 3010: management VLAN
VLAN 3931: service VLAN
AC2
IP: 19.19.19.2/24
Access switch
AP
10