Controller Based WLANs

How to configure Jumbo frames support on Aruba controller?

Answer- Yes. Jumbo frame functionality can be configured on 7200 Series controllers to support up to 9216 bytes of payload.
Jumbo frames are larger than the standard Ethernet frame size of 1518 bytes, which includes the Layer 2 header and Frame Check Sequence (FCS).

Jumbo frames are supported on Tunnel node deployment, L2/L3 GRE tunnel, between wired clients and Wi-fi tunnel.
Jumbo frames aer supported on port channel as well.


  • IPsec, IPIP, and xSec are not supported.
  • IPv6 fragmentation/reassembly are not supported.
  • ArubaOS supports jumbo frames between 11ac APs and 7200 Series controllers only.

To enable the jumbo frame support globally and to configure the MTU value:
(host)(config)# firewall jumbo mtu <val>
You can configure the MTU value between 1789-9216. The default MTU value is 9216.

To disable the jumbo frame support:
(host)(config)# no firewall enable-jumbo-frames
In this case, the MTU value is considered as 9216 (default).

To enable jumbo frame support on a port channel:
(host)(config)# interface port-channel <id> jumbo

To disable jumbo frame support on a port channel:
(host)(config)# interface port-channel <id> no jumbo

To enable jumbo frame support on a port:
(host)(config) # interface gigabitethernet <slot>/<module>/<port> jumbo

To disable jumbo frame support on a port:
(host)(config) # interface gigabitethernet <slot>/<module>/<port> no jumbo

show firewall

Deny inter user traffic Disabled
Prohibit ARP Spoofing Disabled
Stateful VOCERA Processing Enabled
Stateful UA Processing Enabled
Stall Detection Disabled
Enforce bw contracts for broadcast traffic Disabled
Multicast automatic shaping Disabled
Enforce TCP Sequence numbers Disabled
AMSDU Enabled
Jumbo Frames Enabled MTU = 9216
Session-tunnel FIB Enabled
Prevent DHCP exhaustion Disabled
Stateful SIPS Processing Enabled

host)# show interface gigabitethernet <slot>/<port>/<module>
(host)# show interface gigabitethernet 0/0/0
GE 0/0/0 is up, line protocol is up
Hardware is Gigabit Ethernet, address is 00:1A:1E:00:0D:09 (bia 00:1A:1E:00:0D:09)
Description: GE0/0/0 (RJ45 Connector)
Encapsulation ARPA, loopback not set
Configured: Duplex ( AUTO ), speed ( AUTO )
Negotiated: Duplex (Full), speed (1000 Mbps)
Jumbo Support is enabled on this interface MTU 9216
Last clearing of "show interface" counters 1 day 20 hr 32 min 38 sec
link status last changed 1 day 19 hr 37 min 57 sec
120719 packets input, 24577381 bytes
Received 84208 broadcasts, 0 runts, 0 giants, 780 throttles
0 input error bytes, 0 CRC, 0 frame
32939 multicast, 36511 unicast
19865402 packets output, 4953350248 bytes
0 output errors bytes, 0 deferred
0 collisions, 0 late collisions, 0 throttles
This port is TRUSTED

(host) #show interface port-channel <id>
(host) #show interface port-channel 6
Port-Channel 6 is administratively up
Hardware is Port-Channel, address is 00:1A:1E:00:0D:08 (bia 00:1A:1E:00:0D:08)
Description: Link Aggregate (LACP)
Spanning Tree is forwarding
Switchport priority: 0
Jumbo Support is enabled on this interface MTU 9216
Deny source routing Disabled
Immediate Freeback Disabled


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Last update:
‎04-02-2015 10:48 PM
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