Let say a router configured to support dscp,receives a ip packet with ip precedence=1, the router will use the ip precedence - dscp map to find the corresponding dscp value.But which dscp value would be chosen as there are multiple dscp entries for each ip precedence value. For example
I did not notice I posted the questions in wrong forum. Thanks Jon for correcting me. I will keep it in mind next time. The last thing thing I want to do is to avoid switching and routing forum where net pros like you helped me understand the complex topics.
Before DSCP came along only the first 3 bits in the TOS byte in the IP header were used to mark packets. These first 3 bits were called the IP Precedence (IPP) values.
When DSCP came along a further 3 bits from the TOS byte were added to mark packets so now there were six bits in total with which to mark packets. To provide backwards compatability DSCP defines the CS classes which map directly to the old IP Precedence value.
Put simply the first 3 bits of the ToS byte are common to both IPP and DSCP. So CS1 which is a DSCP class simply leaves the extra 3 bits as 0 so you get
IP Precedence 1 = binary 001
DSCP CS1 = binary 001 000
So a device that doesn't understand DSCP can still interpret correctly a packet marked with CS1.
Topology & Design:
Two ACI fabrics
Stretching VLANs using OTV
Both fabrics are advertising BD subnets into same routing domain
Some BDs(or say VLANs) are stretched, but some are not.
Endpoints can move betwee...
VMware Trunk Port Group is supported from ACI version 2.1
VMM integration must be configured properly
ASA device package must be uploaded to APIC
ASAv version must be compatible with ACI and device package version
Topology &Design:Traffic flow within same fabric:Endpoint moves to Fabric-2Bounce Entry Times OutTraffic Black-holedSummarySolutionAppendix:
In the Previous articles of ACI Automation, we are using Postman/Newman a...