Nimbostratus
I read somewhere that if you had the GTM and LTM modules installed on the same unit then you could achieve the same functionality as a link-controller (if not more).
I Have a V9 GTM with LTM installed, and would like to load balance both inbound/outbound sessions over multiple ISP links.
Does this sound feasible and is it straight forward to setup without the presence of the Link controller module.
When you install the LTM w/GTM module, you get the "Links" menu option just like Link Controller, so you can configure according to the LC manual, with one exception, IIRC: You can use the standard LTM load balancing options only. The cost based link load balancing options are ONLY avail with a real LC license, not the LTM/GTM combo.
So you get all LTM & GTM features, many of which are not avail in LC (L7 iRules, more monitoring options, etc) but not all of the LC load balancing options.
Click here for LC doc
HTH
/deb
Admin
Very Seussian.
Nimbostratus
One last query.....
If I wanted to do inbound loadbalacning accross multiple ISP links for a given Wideip I would need to
1. setup the wide ip
2. create a virtual server per ISP network range
Where it starts to get cloudy is how I tie the Links to the wideIP/virtual Svrs. Do I need to configure some dependecies within the Distibuted applications tab?.
How would The LTM/GTM idenify that a link has gone down and to stop issuing DNS replies for those resources.?
Employee
You need some sort of health monitor on the links, I typically use either a transparent ping to some known hop outside the border router (maybe even several that hit Google, Yahoo, etc and require at least one to be up) or SNMP to the router. If the health monitor fails, the link will be marked down and the associated virtuals will no longer be handed out for the WideIP.
Denny
