[c-nsp] Cisco CSS 11501 Load Balancer - Load Balancing on a sorry service

[Richard Thomas]

Hi,

I'm hoping to get some advice as to if what I'm trying to do is achievable or not and if so, how I go about it.

I would like configure a CSS content, that uses the sorry service principal in an advanced way.

I am familiar with the primarySorryServer command and see that the CSS would send all connections to the named service that is configured as the primarySorryServer.

What I would like to do is to configure the CSS, so that once it's decided it's in a "sorry" state (all the services that are configured with "add service" are down) that it load balances to a different set of services.

To explain what I've been trying to do in the form of configuration on the CSS, I've pasted some pretend config below.

Connections come into IP address 1.1.1.1, which normally get load balanced between  9.1.1.1, 9.1.1.2 and 9.1.1.3.

If 9.1.1.1, 9.1.1.2 and 9.1.1.3 are all down, the sorry service is used and the CSS starts passing traffic to 1.1.2.1, which I want it to load balance between  9.1.2.1, 9.1.2.2 and 9.1.2.3.

The order that I have applied the config, is different to the below, as I set out to configure in this order: secondary services, secondary content, sorry service, primary services, primary content.

The order of the config below is different, because I wanted it in the order that the traffic flows and the CSS won't take the config in that order!

The wall I have ran into, is that when I try to create the service I have named "SorryService", I get the following error:
%% Service IP Address conflicts with a local I/F, VIP, mgmt route

If anybody has any ideas about how I can tweak my config below to make it work or  other ways I can achieve what I am trying to do, I would be REALLY grateful

Many thanks in advance :)

Richard.




owner Owner

  content Primary
    vip address 1.1.1.1
    <snip>
    add service Primary1
    add service Primary2
    add service Primary3
    primarySorryServer SorryService



service Primary1
  ip address 9.1.1.1
  <snip>

service Primary2
  ip address 9.1.1.2
  <snip>

service Primary3
  ip address 9.1.1.2
  <snip>



service SorryService
  ip address 1.1.2.1
  <snip>



owner Owner

  content Secondary
    vip address 1.1.2.1
    <snip>
    add service Secondary1
    add service Secondary2
    add service Secondary3



service Secondary1
  ip address 9.1.2.1
  <snip>

service Secondary2
  ip address 9.1.2.2
  <snip>

service Secondary3
  ip address 9.1.2.2
  <snip>








Thanks in advance,

Richard.

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