Users Guide

# Source Destination Prt Type MTU VLAN Acls ------ ------------
-- -------------- --- ---- ---- ---- -------------------
10 192.0.2.1 198.51.100.1 47 1 1100 0 0 0 0 0
11 192.0.2.1 203.0.113.1 47 1 1100 0 0 0 0 0
BSSID Decaps Encaps Heartbeats Cpu QSz Flags EncapKBytes DecapKBytes
00:00:00:00:00:00 0 5 0 22 0 TEFPR
00:00:00:00:00:00 0 0 0 23 0 LEFPRH
In this example, the member tunnel 11 is a standby tunnel, which is denoted by the H flag.
Configuring a Layer-2 or Layer-3 Tunnel Group Using the WebUI
To configure a Layer-2 or Layer-3 tunnel group using the WebUI:
1. Navigate to the Configuration > Network > IP > GRE Tunnels page.
2. In the Tunnel Group pane, click Add.
3. Specify a name for the tunnel-group in the Tunnel Group Name text box.
4. Under Mode, select the tunnel group type.
5. In the Tunnel Group Member text box, specify the tunnel IDs, separating the IDs with commas.
6. To enable preemption, select the Enable Preemptive-Failover Mode check box. This option is enabled by
default.
To disable pre-emption, clear the check box.
7. Click Apply.
Jumbo Frame Support
Jumbo frames are the data frames that are larger than 1500 bytes and includes the Layer 2 header and Frame
Check Sequence (FCS). Jumbo frames functionality can be configured on W-7000 and W-7200 Series
controllersto support up to 9216 bytes of payload.
In centralized deployments, frames that are more than 1500 bytes in size are generated from AP to the
controller during encryption and enabling AMSDU. Therefore, whenever the AP associates to the controller,
jumbo frames are used to get the highest network performace. If this functionality is not supported, the data
frames gets fragmented, which reduces the overall throughput of the network and makes the network slow.
ArubaOS supports jumbo frames between 11ac APs and both W-7000 and W-7200 Seriescontrollersonly.
You can enable the jumbo frame support in the following scenarios:
l Tunnel node: In a tunneled node deployment, the wired clients connected on the tunneled nodes can send
and receive the jumbo frames.
l L2/L3 GRE tunnels: When you establish a GRE tunnel between two controllers, the clients on one controller
can send and receive jumbo frames from the clients on the other controller on enabling jumbo frames.
l Between wired clients: In a network where clients connect to the controller with jumbo frames enabled
ports can send and receive the jumbo frames.
l Wi-Fi tunnel: A Wi-Fi tunnel can support an AMSDU jumbo frame for an AP (The maximum MTU supported
is up to 9216 bytes).
Limitations for Jumbo Frame Support
This release of ArubaOS does not support the jumbo frames for the following scenarios:
l IPsec, IPIP, and xSec.
l IPv6 fragmentation/reassembly.
Dell Networking W-Series ArubaOS 6.4.x | User Guide Network Configuration Parameters | 196