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Rockwell Automation Publication 1783-UM006A-EN-P - May 2014
Chapter 13
Configuring WDS, Fast Secure Roaming, Radio Management, and Wireless Intrusion Detection Services
Configuring WLSM Failover
To ensure near hot standby in cases of WLSM failure, the WLSM Version 2.13
Release supports resilient tunnel recovery and active and standby WLSMs.
Resilient Tunnel Recovery
In the case of a single chassis scenario (one WLSM per chassis), if the WLSM
software fails, existing access point clients connected to the SUP continue to be
connected to the SUP and does not notice any interruption in service.
When an access point detects a WLSM failure, it does not tear down active
tunnels. The active tunnels keep data traffic going between client and SUP.
Because of the WLSM failure, the control traffic going between the access point
and the WLSM is disrupted, (as shown in
Figure 108 on page 406
). This
prevents the access points from accepting new client connections until the
WLSM software is back online. Resilient tunnel recovery is automatic and does
not require any configuration.
Figure 108 - Resilient Tunnel Recovery
Active/Standby WLSM Failover
In addition to resilient tunnel recovery, WLSM supports another level of
resiliency by allowing you to deploy two WLSMs per chassis: an active WLSM
and a standby WLSM. If the active WLSM fails, the standby WLSM becomes
active and takes over the control traffic for existing and new access point clients
without interrupting data traffic. This feature in addition to resilient tunnel
recovery provide near-hot standby in case of WLSM failure.
Data traffic
Control traffic
Access point
Client
SUP
WLSM
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Содержание 1783-WAPAK9
Страница 240: ...240 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 6 Administering the WAP Access Notes...
Страница 300: ...300 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 8 Configuring Multiple SSIDs Notes...
Страница 440: ...440 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 14 Configuring RADIUS and TACACS Servers Notes...
Страница 456: ...456 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 15 Configuring VLANs...
Страница 476: ...476 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 16 Configuring QoS Notes...
Страница 482: ...482 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 17 Configuring Filters...
Страница 489: ...Rockwell Automation Publication 1783 UM006A EN P May 2014 489 Configuring Filters Chapter 17...
Страница 520: ...520 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 19 Configuring SNMP Notes...
Страница 572: ...572 Rockwell Automation Publication 1783 UM006A EN P May 2014 Chapter 21 Troubleshooting Notes...
Страница 578: ...578 Rockwell Automation Publication 1783 UM006A EN P May 2014 Appendix A Protocol Filters Notes...
Страница 594: ...594 Rockwell Automation Publication 1783 UM006A EN P May 2014 Appendix C Error and Event Messages Notes...
Страница 600: ...600 Rockwell Automation Publication 1783 UM006A EN P May 2014 Glossary Notes...
Страница 610: ...610 Rockwell Automation Publication 1783 UM006A EN P May 2014 Index Notes...
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