I understand locally generated traffic on a router example such OSPF, BFD are not controlled by Qos and are such packets have pak_priority flag set.
So a packet with pak_priority flag are not dropped by Qos if there is congestion. Is this hardware specific?
a system hidden queue for routing protocol messsages doe not exist in all platforms
it is present on ISR routers C3600 and C2600.
It is not present on C7500, GSR for example.
creating a traffic class for providing some resources to routing protocols may be a safe move
We did a test between a C3640 and C7500 to demonstrate this: the BGP session was falling down on C3640 side when link was congested not on C7500 side that was able to receive messages (hidden system queue on C3640)
how is going with BFD on that link india-singapore.
Am I remembering correctly?
Hope to help