iRule to specify link preference for specific TCP port

Question

I need to favor one of two ISP links to handle traffic on port 8200. Basically I have the following: 
&nbsp;  
&nbsp; ISP-Cox 
&nbsp; ISP-Qwest 
&nbsp;  
&nbsp; Outbound traffic on port 8200 needs to go to the Cox connection if it is available.  If not, it should fail back to the Qwest connection. 
&nbsp;  
&nbsp; Suggestions?

dennypayne · Answer

You don't need an iRule for this, just create a pool with your 2 gateway addresses, set Priority Group Activation to enabled, and set the Cox gateway to have a higher priority than Qwest.  Then assign this pool to your outbound virtual server for port 8200 (I'm assuming wildcard 0.0.0.0:8200). 
&nbsp;  
&nbsp; Denny

sose_86565 · Answer

Thanks for the info.  That is the route I wanted to go, but my Outbound virtual server doesn't show the ability to add additional pools.  The resources tab only has iRules.  Perhaps it is configured for the incorrect type to support this.  It is set to Forwarding (IP) which I understood to be the correct setting for outbound.

sose_86565 · Answer

So doing this method, would I then have two outbound virtual servers?  One for 0.0.0.0:* and one for 0.0.0.0:8200

dennypayne · Answer

Yes, traffic will be dealt with in most-specific to least-specific fashion. 
&nbsp;  
&nbsp; Denny

sose_86565 · Answer

Looking good.  Thanks for the help denny..

Forum Discussion

iRule to specify link preference for specific TCP port

Recent Discussions

APM webtop customization header message

Installing a PKCS 12 File onto an F5 Device

Irule to allow specific IPs

Uploading SKCS 12 File to F5 Device

F5 not Identifying Parameter in Text/Plain Upload

Related Content

Enforce Server Cipher proposal in preferred order

Preferred Order in Failover Configuration

Disabling Specific Weak Cipher Suites

find specific SNMP OID

Set your Preferred Domain (www or non-www)