QOS

[maninder_singh.negi1]

Packet is showing TOS value of A8 ?? in sh ip cache verbose flow

How can i convert it into equivalent COS parameter.

I need to know whether A8 is equivalent to CS1 or not

[maninder_singh.negi1]

A8 decimal should be 168. and Binary should be 10101000,IP Precedence should be 5.  

This make sense ??? Can anyone confirm

[chrihussey · Accepted solution]

Yes it is IP Precedence 5. the first three most significant bits (101) dictates this. The DSCP value (101010) is 42 (decimal), to figure this you drop the last two least significant bits and do the binary to decimal conversion.

[Joseph W. Doherty · Accepted solution]

L2 CoS also uses 3 bits, so you can often just use the first 3 bits of the ToS for your CoS setting.