When Both Dscp And L2Cos Are Used - Brocade Communications Systems Brocade BladeSystem 4/24 User Manual

Supporting dcfm 10.4.x
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When both DSCP and L2CoS are used

If an FCIP tunnel or circuit is VLAN tagged, both DSCP and L2CoS are relevant, unless the VLAN is
end-to-end, with no intermediate hops in the IP network. The following table shows the default
mapping of DSCP priorities to L2Cos priorities. This may be helpful when consulting with the WAN
administrator. These values may be modified per FCIP tunnel.
TABLE 23
DSCP priority/bits
46 / 101110
7 / 000111
11 / 001011
15 / 001111
19 / 010011
23 / 010111
27 / 011011
31 / 011111
35 / 100011
39 / 100111
43 / 101011
47 / 101111
51 / 110011
55 / 110111
59 / 111011
63 / 111111
DCFM Enterprise User Manual
53-1001775-01
Default Mapping of DSCP priorities to L2Cos Priorities
L2CoS priority/bits
7 / 111
1 / 001
3 / 011
3 / 011
3 / 011
3 / 011
0 / 000
0 / 000
0 / 000
0 / 000
4 / 100
4 / 100
4 / 100
4 / 100
4 / 100
0 / 000
When both DSCP and L2CoS are used
Assigned to:
Class F
Medium QoS
Medium QoS
Medium QoS
Medium QoS
Medium QoS
Class 3 Multicast
Broadcast/Multicast
Low Qos
Low Qos
High QoS
High QoS
High QoS
High QoS
High QoS
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