Application Delivery (ADX)

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Occasional Contributor
Posts: 5
Registered: ‎11-08-2010

Dynamic Weighted Predictor and SNMP

We've just recently purchased/setup a ServerIron in our environment. We'd like to use the dynamic weighted predictor method to look at RAM use on various servers and weight load to the server with the most available RAM. We think we want to use a reverse predictor.

So, we've set that part up in the virtual server--specifying the community string that our servers respond to (same community string/MIB used by another SNMP monitor that we have in the company...and that works fine). The problem is that the ServerIron never seems to get any information from the real servers. In fact, we aren't seeing any SNMP traffic drops/hits on the real server firewalls coming from the ServerIron device at all.


Do we need to do something separate to configure the SNMP manager part of the ServerIron device to send SNMP requests to the real servers?

This is our ips-edited-out config:


!
context allservers

server port-policy Win
  port snmp
  port snmp content-check MyCommunityString

!
server real ServerA XXX.XX.XXX.XX
port default disable
source-nat
snmp-request community 1 $k%q=-a'tmY|
snmp-request oid 1 1.3.6.1.2.1.25.2.3.1.6.6
snmp-request oid 2 1.3.6.1.2.1.25.3.3.1.2.1
port 4503
port 4503 keepalive
!
server real ServerB XXX.XX.XXX.XX
port default disable
no-l3-check
source-nat
source-ip XXX.XX.XXX.XX
snmp-request community 1 $k%q=-a'tmY|
snmp-request oid 1 1.3.6.1.2.1.25.2.3.1.6.6
snmp-request oid 2 1.3.6.1.2.1.25.3.3.1.2.1
port 4503
port 4503 keepalive
port snmp
port snmp keepalive
!
!
server virtual abyss1-v3 XXX.XX.XXX.X
sym-priority 110
sym-active
predictor dynamic-weighted reverse oid 1 max 98304
port 4503
port 4503 tcp-only
bind 4503 ServerA 4503 ServerB 4503
!
end

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: Dynamic Weighted Predictor and SNMP

Hi,

     The config look correct, please check to make sure you have SNMP version 1 ot 2c enable of your real server as this will not work with version 3

.

Occasional Contributor
Posts: 5
Registered: ‎11-08-2010

Re: Dynamic Weighted Predictor and SNMP

Thanks--I believe we resolved this with the help of Brocade, by changing a server source IP to an interface IP on our config.

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