Symptom

IOS-XR Netflow V9 template flow FLOW LABEL field length does not comply with RFC standard IOS-XR behavior ( found in 6.1.4) IPV6_FLOW_LABEL value 31 length 4 According to RFC 3954, ----------------------------------- Field Type Value Length (bytes) Description IPV6_FLOW_LABEL 31 3 IPv6 flow label as per RFC 2460 definition

Conditions

Workaround

n/a

Further Problem Description

is it Platform independent issue ? >> Yes Is this Day 1 issue ? >> Yes Does this affect ipfix version ? >> Yes. Although issue was originally raised for v9 version, ipfix (version 10, ie v10) is also affected. This is a IOS-XR specific issue. Impact ---- If the collector just follows the template to match the data records, there is no problem. But if there is a check on adherence to RFC, then there will be a problem, because RFC length is 3. In summary, this may not be a problem for most collectors.