Controller Based WLANs

Requirement:

Aruba controllers support IP compression with certain hardware and topologies. In this article, we will see how to configure the same and verify it.

Aruba Controller supports IP compression on ArubaOS 6.4.3.0 and above on controllers 7000 and 7200 series (except 7205).

IP compression is enabled by default in following topologies. There is no special configuration needed.

a. Master<==> Branch office Controller.

b. Master<==>Standby<==>Local controller.

We can disable it using the following commands:

(Aruba7005) #configure t
Enter Configuration commands, one per line. End with CNTL/Z
# crypto-local isakmp disable-ipcomp

We can enable it again using the command below:

(Aruba7005) (config) #no crypto-local isakmp disable-ipcomp

We can see the status of IP compression:

(Aruba7005) #show crypto-local isakmp disable-ipcomp
IP Compression is Enabled

We can verify the status on any Master-Local or Master-BOC controller:

(Aruba7005) #show role
switchrole:standby
masterip:10.150.2.100

(Aruba7005) #show datapath compression
+----+------+-----------------------------------------------------+
|SUM/|      |                                   |                 |
|CPU | Addr | Description                                   Value |
+----+------+-----------------------------------------------------+
|    | [00] | Compress Requests Sent                         5012 |
|    | [02] | Compress Response Received                     5012 |
|    | [04] | Decompress Requests Sent                       4327 |
|    | [06] | Decompress Response Received                   4327 |
|    | [13] | IPPCP Frames Received                          4327 |
|    | [14] | IPPCP Frames Xmit                              5012 |
+----+------+-----------------------------------------------------+
|    |      |                                                     |
| G  | [01] | Compression Engine total                          1 |
+----+------+-----------------------------------------------------+
| G  | [01] | Raw Bytes Sent to Comp Engine               2089278 |
| G  | [02] | Compressed Bytes from Comp Engine            982401 |
+----+------+-----------------------------------------------------+
| G  | [00] | Compression Engine Present                     TRUE |
+----+------+-----------------------------------------------------+

We will see the above counters increase:

(Aruba7005) #show datapath compression
+----+------+-----------------------------------------------------+
|SUM/|      |                                   |                 |
|CPU | Addr | Description                                   Value |
+----+------+-----------------------------------------------------+
|    | [00] | Compress Requests Sent                         5022 |
|    | [02] | Compress Response Received                     5022 |
|    | [04] | Decompress Requests Sent                       4336 |
|    | [06] | Decompress Response Received                   4336 |
|    | [13] | IPPCP Frames Received                          4336 |
|    | [14] | IPPCP Frames Xmit                              5022 |
+----+------+-----------------------------------------------------+
|    |      |                                                     |
| G  | [01] | Compression Engine total                          1 |
+----+------+-----------------------------------------------------+
| G  | [01] | Raw Bytes Sent to Comp Engine               2093466 |
| G  | [02] | Compressed Bytes from Comp Engine            984334 |
+----+------+-----------------------------------------------------+
| G  | [00] | Compression Engine Present                     TRUE |
+----+------+-----------------------------------------------------+