32
•
DCBX Rev 1.00 identifies application protocol packets only by frame type and advertises only
TLVs with frame type 0x8906 (FCoE).
•
DCBX Rev 1.01 has the following attributes:
{
Supports identifying application protocol packets by both frame type and TCP/UDP port
number.
{
Does not restrict the frame type or TCP/UDP port number for advertising TLVs.
{
Can advertise up to 77 TLVs according to the remaining length of the current packet.
•
In a QoS policy, you can configure multiple class-behavior associations. A packet might be
configured with multiple 802.1p priority marking or mapping actions, and the one configured first
takes effect.
Procedure
1.
Enter system view.
system-view
2.
Create an ACL and enter its view.
{
Create a Layer 2 ACL and configure a rule for the ACL.
acl
mac
{
acl-number
|
name
acl-name
}
[
match-order
{
auto
|
config
}
]
rule
[
rule-id
]
permit
type
protocol-type
ffff
{
Create an IPv4 advanced ACL and configure a rule for the ACL.
acl advanced
{
acl-number
|
name
acl-name
}
[
match-order
{
auto
|
config
}
]
rule
[
rule-id
]
permit
{
tcp
|
udp
}
destination-port eq port
DCBX Rev 1.00 supports only Layer 2 ACLs. DCBX Rev 1.01 and IEEE Std 802.1Qaz-2011
support both Layer 2 ACLs and IPv4 advanced ACLs.
3.
Return to system view.
quit
4.
Configure a class:
a.
Create a class, specify the operator of the class as OR, and enter class view.
traffic classifier
classifier-name
operator
or
b.
Use the previously configured ACL as the match criterion of the class.
if-match acl
acl-numbe
r
c.
Return to system view.
quit
5.
Configure a traffic behavior:
a.
Create a traffic behavior and enter its view.
traffic behavior
behavior-name
b.
Configure the behavior to mark packets with an 802.1p priority.
remark dot1p
8021p
c.
Return to system view.
quit
6.
Configure a QoS policy:
a.
Create a QoS policy and enter its view.
qos policy
policy-name
b.
Associate the class with the traffic behavior in the QoS policy, and apply the association to
DCBX.
classifier
classifier-name behavior behavior-name mode
dcbx
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