Hi guys
I have a question regarding WB II, Lab 2:
*From the FINAL Config:*
class-map match-all VLANB
* match vlan 12*
match class-map class-default
!
!
policy-map VLANB
class VLANB
police aggregate VLANB
!
interface FastEthernet0/1
* switchport access vlan 12*
switchport mode dynamic desirable
* service-policy input VLANB*
!
interface FastEthernet0/1
!
(...)
!
interface GigabitEthernet0/2
* switchport access vlan 12*
switchport mode dynamic desirable
* service-policy input VLANB*
!
1) First I have to point out what I believe to be a typo of some sort: The
Solution Guide specifies that the service policy is applied to both
interface FastEthernet0/1 and FastEthernet0/2, however in the FINAL config,
the service-policy is applied to FastEthernet0/1 and *Gigabit*Ethernet0/2
2) Even though these ports was subject to the service policy, the "match
vlan 12" statement is still meaningless, because the ports are defaulted to
access ports in VLAN12 anyway, and are thus untagged when punted to the
policer? In fact, in my opinion this wouldn't work at all
According to Cisco's documentation -
"Class maps that contain the match vlan command cannot contain any other
classification criteria"
http://www.cisco.com/en/US/docs/ios/12_2sb/feature/guide/vlntgqos.html ,
right under the section "Restrictions for QoS—VLAN Tag-Based"
So based on documentation, the "match vlan" statement should be used on
802.1Q trunk ports, and not access ports. Please correct me if I am wrong
here.
Regards,
Atle Hardarson
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