Huawei AC6605 Manual page 18

AC6605 Access Controller
Dual-Link Backup White Paper
Layer 2 Chain Networking (Tunnel Forwarding)
Figure 1-7 Dual-link backup in Layer 2 chain networking (tunnel forwarding)
IP: 19.19.19.1/24
Access switch
As shown in Figure 1-7, the ACs are deployed between an aggregation switch and two access
switches. Data packets from STAs are forwarded through tunnels. AC1 is the active AC, and
AC2 is the standby AC.
The configuration notes in this networking are as follows:
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Issue 01 (2012-05-30)
AC1
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
The ACs must deliver the same VAP to an AP. Manually add offline APs to AC1 and
AC2. It is recommended that the same AP ID be configured for an AP on AC1 and AC2.
Run the following commands:
[AC6605_AC1] wlan
[AC6605_AC1-wlan-view] ap id 0 ap-type WA601 mac 0025-9876-2633 sn A0928182
[AC6605_AC2] wlan
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BRAS
Aggregation
switch
VLAN 3931
VLAN 3010
1 Dual-Link Backup
VLAN 3010: management VLAN
VLAN 3931: service VLAN
AC2
IP: 19.19.19.2/24
Access switch
AP
IP: 19.19.19.X
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