GRE Backup Tunnel

Instant supports configuring a GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel over IPv6 between an Instant AP and a GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. terminating device such as a wireless access gateway Gateway is a network node that allows traffic to flow in and out of the network. or a controller. Starting from Aruba Instant 8.4.0.0, every Instant AP in a cluster is able to establish a GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel over IPv6. Each Instant AP can support a primary tunnel and a backup tunnel configuration. However, only one of these tunnels can be active at any given time under manual GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. configuration. This feature also introduces GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel failover, wherein if the primary GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel is not reachable, the Instant APs will automatically failover to the backup GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel. The Instant AP uses icmp pings to detect reachability of the primary and backup tunnel endpoints. At any point of time, only one GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel can stay active.

Configuring GRE Backup Tunnel Parameters

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures a primary GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel endpoint:

(Instant AP)(config)# gre primary <name>

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures a backup GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel endpoint:

(Instant AP)(config)# gre backup <name>

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command removes the backup or primary GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel configuration

(Instant AP)(config)# no gre backup | no gre primary

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command removes the entire GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. configuration:

(Instant AP)(config)# no gre backup

(Instant AP)(config)# no gre primary

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command prevents the SSID Service Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. from being disabled during a GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel failover or recovery:

(Instant AP)(config)# gre disable-reconnect-user-on-failover

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures the timer after which the SSIDs Service Set Identifier. SSID is a name given to a WLAN and is used by the client to access a WLAN network. should come up once the tunnel status is UP:

(Instant AP)(config)# gre reconnect-time-on-failover <Time in secs>

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures the number of ping packets to be missed to mark the tunnel status as DOWN:

(Instant AP)(config)# gre ping-retry-count <new_count>

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures the time interval at which a ping probe packet needs to be sent:

(Instant AP)(config)# gre ping-frequency <time_in_secs>

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command disables the hold on timer from running on the Instant AP:

(Instant AP)(config)# gre disable-preemption

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command configures the hold down time interval before tunnel recovery from backup to primary:

(Instant AP)(config)# gre hold-time <time_in_secs>

Verifying the Configuration

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command is used to view the various parameters configured for the GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel on the Instant AP:

(Instant AP)# show gre config

The following CLI Command-Line Interface. A console interface with a command line shell that allows users to execute text input as commands and convert these commands to appropriate functions. command displays the various parameters that indicate the status of the GRE Generic Routing Encapsulation. GRE is an IP encapsulation protocol that is used to transport packets over a network. tunnel:

(Instant AP)# show gre status