Application Acceleration
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Recognized Expert
DannyJ
Posts: 319
Registered: ‎11-02-2007
0

Re: WXC Flapping Issue

Andy,

 

Two things. One I see constants tunnel restarts in the log. What is the WAN environment connecting these two boxes together? Also, I see you are using 5.7.1.1, please upgrade to 5.7.2......as a foot note 5.7.3 will be released end of this week, its just a scheduled maintenance release, not specific to anything I see in your log but always good to have most recent bug fixes.

 

I'm more concerned with the fact I see lots of box restart and tunnel bounces.

 

What is your jtac case number please?

Danny Jump
Technical Marketing Manager - Access and Acceleration Business Unit
Contributor
Magnii
Posts: 13
Registered: ‎11-11-2009
0

Re: WXC Flapping Issue

JTAC Case# 2009-1025-0104

JTAC Case Desc: When using the WXC to accelerate RDP Traffic the RDP sessions start flapping

 

We have 2 WAN links.

The primary link is a 2Mbit BDSL Service. Basically it is a dedicated 2Mbit connection for all our Primary Traffic (which is the RDP traffic).

The 2nd link is a ADSL2 link that normally negotiates to 20.221Mbps/915Kbps

 

No other equipment has problems with these links and if I disable the RDP traffic from being compressed then there are no issues with it flapping. As you would expect I have similar ssues with Telnet sessions dropping out if I use the WXC to compress them.

 

Is there an issue with the Hardware/Software on there boxes?

Both boxes are already upgraded to 5.7.2 as far as I can tell. I have pasted a copy of the "Help->About" box below for each WXC for your confirmation.

 

Office WXC:

IP address: 172.16.10.253

Device name: WXC-172.16.10.253

Software version: 5.7.2.0

Model No.: WXC-2600 - v1.0

Local Interface Media: Copper

Remote Interface Media: Copper

Serial number: 2600000734

License key: B6R6-X56C-P3V2-HUQD-996C-9999

Additional modules licensed: Packet Flow Acceleration

 

DataCentre WXC:

IP address: 10.3.3.2

Device name: WXC-10.3.3.2

Software version: 5.7.2.0

Model No.: WXC-3400 - v1.0

Local Interface Media: Copper

Remote Interface Media: Copper

Serial number: 3400000592

License key: Y4R4-BBZW-DYRH-B556-99NQ-9999

Additional modules licensed: Packet Flow Acceleration

 



Andrew Peart
mbits - Senior Network Engineer
Recognized Expert
DannyJ
Posts: 319
Registered: ‎11-02-2007
0

Re: WXC Flapping Issue

Andy,

 

It is possible there is a h/w problem but its a long shot.

 

Please send me a copy of the configs, I suspect there is something silly somewhere.

 

P.S. What is the jtac case you have?

 

P.P.S. Have you spoken to anybody from JNPR Oz, maybe Steve Smith?

Danny Jump
Technical Marketing Manager - Access and Acceleration Business Unit
Juniper Employee
Antares
Posts: 33
Registered: ‎03-18-2009
0

Re: WXC Flapping Issue

I would like to clarify one point - Does it break :

 

a. only when you have AFP enabled (TCP Acceleration)

 

or

 

b. just by turning ON compression for those applications?

 

In case it's a., then we can start with simply disabling AFP and leave compression ON and see how it goes. This should already give us some clues on where to look at.

 

Let us know,

--E

 

 

Contributor
amol_waghmare
Posts: 24
Registered: ‎09-22-2009
0

Re: WXC Flapping Issue

Hi,

I am imaging why no one asked below questions? If you go throught past post you can find this problem.

 

Is encyrption or compression enabled on RDP?

Compression and Acceleration enabled on RDP?

 

I would suggest to remove it from Acceleration as i had faced similar problems.

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