How can I calculate size of WAN traffic between hosts?

[karlbosanquet]

I have a multisite Indexer Cluster and Search Head Cluster and I want to identify what is the volume of data being replicated/sent over the WAN between each host, what would be the best way to do this?

[lycollicott · Accepted solution]

I use this to track indexer replication traffic between my two sites:

index=_internal (host=indexer*) (destIp="10.xx.xx.xx" OR destIp="10.yy.yy.yy") sourcetype=splunkd destPort=9887 
| timechart span=15m avg(tcp_KBps)

[karlbosanquet]

Is there a search that can be run to identify replicated data size and how often this happens? I need a volumetric profile of our WAN load.

[rbal_splunk]

Bulk of the data replication will be between indexer's and that will depend on the RF and SF and indexing rate

[karlbosanquet]

both are 2.

Indexer 1 = Site 1
Indexer 2 = Site 2
Search Head 1 = Site 1
Search Head 2 = Site 1
Search Head 3 = Site 2