This attribute specifies the Class of Service (CoS) given to each
packet received on an ATM connection.
The initial CoS given to a packet may be overridden when the
cosPolicyAssignment attribute is defined on either the IpPort
component of the ProtocolPort linked to the ATM MPE or the Ip
component of the protocol port's VirtualRouter.
When a packet is to be transmitted on an ATM MPE protocol port
where multiple connections are available for the packet's next hop,
the packet is forwarded on the connection where the ipCos value
matches the CoS of the packet. When the packets' CoS does not
match the ipCos value of any of the available connections, the
packet is forwarded using next lowest CoS; failing this, the packet
is forwarded using the next highest CoS.