Cisco Cisco 5508 Wireless Controller Referencia técnica
9
High Availability (SSO) Deployment Guide
D r a f t L a b e l — C i s c o C o n f i d e n t i a l
Glossary
Glossary
A
AP SSO
Access Point State Full Switchover where CAPWAP state for each AP is
maintained on Active and Standby WLC and CAPWAP state is retained after
switchover to Standby WLC. AP need not go through CAPWAP discovery and
join process after failover.
maintained on Active and Standby WLC and CAPWAP state is retained after
switchover to Standby WLC. AP need not go through CAPWAP discovery and
join process after failover.
Active WLC
This is the WLC which is currently active in HA pair and taking care of the
wireless network. APs establish single CAPWAP tunnel with Active WLC.
wireless network. APs establish single CAPWAP tunnel with Active WLC.
C
Client SSO
Wireless Client State Full Switchover where client state is also maintained on
Active and Standby WLC and wireless clients are not de-authenticated after
switchover. Will be supported in future release.
Active and Standby WLC and wireless clients are not de-authenticated after
switchover. Will be supported in future release.
K
Keep-Alive-Timer
Standby WLC in HA setup sends keep-alive packets on redundancy port to
check the health of active WLC. With no acknowledgment of three keep-alive
packets from active WLC, standby declares active as dead and takes over the
network.
check the health of active WLC. With no acknowledgment of three keep-alive
packets from active WLC, standby declares active as dead and takes over the
network.
M
Maintenance Mode
When Standby WLC cannot communicate to gateway or cannot discover peer
WLC i.e. active WLC via redundant port it goes in Maintenance mode. In this
mode WLC cannot communicate to infra network and will not participate in HA
process. Because WLC in maintenance mode does not participate in HA process
it need to be manually rebooted to bring it out of maintenance mode and make
participate in HA process again.
WLC i.e. active WLC via redundant port it goes in Maintenance mode. In this
mode WLC cannot communicate to infra network and will not participate in HA
process. Because WLC in maintenance mode does not participate in HA process
it need to be manually rebooted to bring it out of maintenance mode and make
participate in HA process again.
Mobility MAC
Unique MAC address shared between peers in HA setup. This mac address
should be used to form a mobility pair between HA setup and another WLCs in
HA setup or with independent controllers. By default active WLC mac address
is shared as mobility mac address but mobility mac can also be manually
configured on active WLC using a CLI, which will be shared between peers in
HA setup.
should be used to form a mobility pair between HA setup and another WLCs in
HA setup or with independent controllers. By default active WLC mac address
is shared as mobility mac address but mobility mac can also be manually
configured on active WLC using a CLI, which will be shared between peers in
HA setup.
P
Peer
AP SSO is box-to-box redundancy i.e. 1:1 so both the WLCs (Active and
Standby) in HA setup are peer to each other.
Standby) in HA setup are peer to each other.
Primary Unit
In AP SSO deployment controller running higher permanent count licenses
should be configured as primary unit. Primary Unit is the WLC, which will take
the role of Active WLC first time it forms HA pair. Primary Unit sends the lic
count information to its peer via redundant port.
should be configured as primary unit. Primary Unit is the WLC, which will take
the role of Active WLC first time it forms HA pair. Primary Unit sends the lic
count information to its peer via redundant port.
Peer-Search-Timer
While booting, standby WLC waits for peer search timer (default 2 minutes) to
discover the peer. If WLC cannot discover its peer within this time it will
transition its state to maintenance mode.
discover the peer. If WLC cannot discover its peer within this time it will
transition its state to maintenance mode.
R
Redundancy Port
Physical Port on 5500/7500/8500 WLC for HA role negotiation, configuration
sync and redundancy messages between Active and Standby WLC.
sync and redundancy messages between Active and Standby WLC.
Redundancy Vlan
Vlan created on Cat6500 Sup for WiSM-2 Redundancy Port that is connected to
Cat6k backplane to exchange configuration and redundancy messages including
HA role negotiation between Active and Standby WLC.
Cat6k backplane to exchange configuration and redundancy messages including
HA role negotiation between Active and Standby WLC.