hi Darren,i think this would depend on the is-is hold timer. we could try reducing it, but i am not sure if it is recommended.-balaji

netflow collects or populates entries in the netflow table depending on the flow mask that is configured

from the following document it looks like we only need to add  ip flow command on the l3 interfaceThe ip multicast netflow output-counters enables the calculation of output bytes/packets for an ingress flow.http://www.cisco.com/en/US/docs/switches/la...