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jadhavvishal219
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Difference between Dynamic dispatcher and Dynamic Balancer

What is the difference between CoreXL Dynamic Dispatcher and Dynamic Balancing for CoreXL? Have read sk105261 and sk164155 but not getting the exact point there. Please someone help

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PhoneBoy
Admin
Admin

Actually, one or more CoreXL instance will be used as an SND.
For example, an 8 core gateway will start out with a 2/6 split and might change to a 3/5 or 4/4 split depending on your network traffic/system load.

Couple rules:

  • The maximum CoreXL instances won’t change. For example, in an 8 core system, you will never have more than 6 FWKs.
  • The number of SNDs will never exceed the number of FWKs.
  • There are some thresholds and such for when an FWK is reallocated to ensure it doesn’t make things worse 

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G_W_Albrecht
Legend
Legend

It is rather easy:

  • The dispatcher is executed when a packet should be forwarded to a CoreXL FW instance ... and is in charge of selecting the CoreXL FW instance that will inspects the packet. (sk105261)
  • Dynamic Balancing (Dynamic Split) is a performance-enhancing daemon that balances the load between CoreXL SNDs and CoreXL Firewalls. It dynamically changes the split between CoreXL SNDs and CoreXL Firewalls and does not require a reboot or cause an outage. (sk164155)

So the first is dispatching packets to FW instances while the second can change the number of SND / FW instances on the fly.

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Paresh_Keny
Explorer

The dispatcher concept is clear but I am little confused here, "second can change the number of SND / FW instances on the fly."

What does this sentence mean exactly. Does the CoreXL instances increases automatically if required?

for ex- if I have 2 CoreXL SND and 6 CoreXL FW, with Dynamic balancing these numbers will change to handle the process?

 

Thank you for response. 

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PhoneBoy
Admin
Admin

Actually, one or more CoreXL instance will be used as an SND.
For example, an 8 core gateway will start out with a 2/6 split and might change to a 3/5 or 4/4 split depending on your network traffic/system load.

Couple rules:

  • The maximum CoreXL instances won’t change. For example, in an 8 core system, you will never have more than 6 FWKs.
  • The number of SNDs will never exceed the number of FWKs.
  • There are some thresholds and such for when an FWK is reallocated to ensure it doesn’t make things worse 
AmitShmuel
Employee
Employee

The number of SNDs is determined by the number of available NIC IRQs, so, depending on system load, it is possible to exceed the number of FWs.

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