Hi,
I have set up a practice lab in GNS3 for understanding "Classifying & Marking" DSCP values. The topology is like this:
(R2)---------f0/0(R1)f0/1----------(R3)
R2 has two loopback interfaces with IP addresses 172.1.2.100/25 for loopback0 & 172.1.2.200/25 for loopback1
R3 has tow loopback interfaces with IP addresses 172.1.3.100/25 for loopback0 & 172.1.3.200/25 for loopback1
When Telnet Session is initiated from R2's 172.1.2.100 to R3's 172.1.3.100, R1 should mark the egress IP packet out of fa0/1 with DSCP value of 10(AF11).
The truncated configuration is as follows:
ip access-list extended MyTraffic
permit ip 172.1.2.0 0.0.0.127 172.1.3.0 0.0.0.127
class-map match-all test3
match access-group name MyTraffic
match protocol telnet
policy-map p3
class test3
set ip dscp af11
interface FastEthernet0/1
ip address 10.1.3.1 255.255.255.128
duplex auto
speed auto
service-policy output p3
The configuration works all right, but when telnet session is initiated from R2's 172.1.2.200 to R3's 172.1.3.200, the egress IP Packet out of fa0/1
is found with the DSCP value of 110000 (Class selector 6), where it should be 000000 (Best Effort Delivery) isn't it..???
This is the first time I'm posting on forums, kindly help me in understanding this..!!
