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Monthly Archives: October 2012

Enabling Netflow and NDE on Cisco 7600 series router

Posted on by Posted in cisco 1 Comment

I recently updated a 7200 series router to a 7600 series – quite a big change.  The config used was exactly the same and I couldn’t for the life of me work out why netflow was showing such a small amount of traffic.  In short it turns out you need to enable something called NDE (Netflow Data Export).  Without this enabled the router will only export flows for the MSFC which is mainly management traffic.

All you need to add is the following line in addition to the normal flow export lines:

mls nde sender version 5

The following guide was quite useful for this: http://www.cisco.com/en/US/docs/routers/7600/ios/15S/configuration/guide/nde.html

So if you’re using an RSP720 or similar and find that you’re not seeing as much traffic as you should be when enabling netflow then this is likely why.

Hope this helps someone.

Jay Greig

IIS Rewrite Redirect Non HTTPS to HTTPS

Posted on by Posted in Microsoft, Uncategorized 1 Comment

A quick and simple method for forcing people to use HTTPS on a site. The code uses Microsofts IIS Rewrite which is an additional feature in IIS 7 and IIS 7.5. You can easily place the following code into the applications web.config and adjust accordingly, it maintains the subfolder/path string and won’t strip it out.

<configuration>
<system.webServer>
<httpErrors errorMode="DetailedLocalOnly" defaultPath="./error/404.html" defaultResponseMode="ExecuteURL">
<remove statusCode="404" subStatusCode="-1" />
<error statusCode="404" prefixLanguageFilePath="" path="./error/404.html" responseMode="ExecuteURL" />
</httpErrors>

<rewrite>
<rules>
<rule name="HTTP to HTTPS redirect" stopProcessing="true">
<match url="(.*)" />
<conditions>
<add input="{HTTPS}" pattern="off" />
</conditions>
<action type="Redirect" url="https://{HTTP_HOST}{REQUEST_URI}" redirectType="Found" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>

There’s a few examples out there that don’t seem to work to great, but the above is tested and works just file.
Hope this helps people!

Jay Greig

Unable to Complete Switching to the Panel 10 Business Model

Posted on by Posted in plesk Leave a comment

I’ve recently been involved in upgrading a number of Parallels Plesk installations from version 9.5.4 (or sometimes earlier) to 10.4.4+.  Because of the model changes between version 9 and version 10 during the upgrade a bootstrap script runs which tries to convert the majority of clients and domains into customers and ‘custom subscriptions’.  Unfortunately for a lot of setups this isn’t entirely straight forward and after the installation completes under the ‘Tools’ menu there’s an option named ‘Complete Switching to the Panel 10 Business Model’ which must be run to transition any remaining customers and subscriptions that do not ‘fit’.

For the majority you can use the recommended actions in completing the transitions and most customers and subscriptions will transition fine. If not, maybe the below scenarios will help:

1. If you receive the error ‘Error: Some of the selected customers and subscriptions were not transitioned.’ then to fix this you will need to use the selective transition model under ‘selective transition of customers’ OR ‘selective transition of Subscriptions’ and try applying an alternative transition scheme – hopefully this will work.  You may find that by traversing into an individual customer or subscription and using the ‘Apply Transition Scheme’ may give more useful errors, i.e. ‘Domain limits exceeding Subscription’.

2. If  you find that you’re left with a lot of customers and subscriptions that will not transition and there’s no error the only way to work around this is to move the subscriptions to one customer then move them back by using the ‘change subscriber’.

Hope this helps!

Jay Greig

Cisco: Low on memory; try again later

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A Cisco 2960 switch that i’ve not been able to login to remotely for a while I found  that even logging in locally at the console was impossible with the errors ‘%% Low on memory; try again later’ showing on carriage returns.  Currently running version ‘(C2960-LANBASEK9-M), Version 12.2(58)SE2’ The switch itself does nothing heavy as it’s acting as a switch for 3 machines.

Switch Ports Model SW Version SW Image
—— —– —– ———- ———-
* 1 26 WS-C2960-24TT-L 12.2(58)SE2 C2960-LANBASEK9-M

As you can see it’s already running the latest version of the 12.2 line which doesn’t help so it’s likely an unknown or unresolved memory leak.

Cisco Switch Low on memory
Cisco Switch Low on memory

Downgrading to version 12.2(35)SE5 which is running on a lot of other switches I manage is since running fine so although it’s early days this particular version is tried and tested and I’ve a lot more confidence in it