Fabric OS FCIP Administrator’s Guide 17
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QOS, DSCP, and VLANs
2
DSCP and VLAN support on FCIP circuits
When a VLAN tag is created on an FCIP circuit, all traffic over that circuit will use the specified
VLAN. The options are available on both the portcfg fciptunnel command to enable VLAN support
on circuit 0, and on the portcfg fcipcircuit command for additional circuits. The options are as
follows:
The following example shows the VLAN tag option on the fciptunnel create command. The VLAN tag
applies only to circuit 0.
switch:admin> portcfg fciptunnel 16 create 192.168.2.20 192.168.2.10 100000 -v
100
Operation Succeeded
11 / 001011 3 / 011 Medium QoS
15 / 001111 3 / 011 Medium QoS
19 / 010011 3 / 011 Medium QoS
23 / 010111 3 / 011 Medium QoS
27 / 011011 0 / 000 Class 3 Multicast
31 / 011111 0 / 000 Broadcast/Multicast
35 / 100011 0 / 000 Low Qos
39 / 100111 0 / 000 Low Qos
43 / 101011 4 / 100 High QoS
47 / 101111 4 / 100 High QoS
51 / 110011 4 / 100 High QoS
55 / 110111 4 / 100 High QoS
59 / 111011 4 / 100 High QoS
63 / 111111 0 / 000 Reserved
TABLE 3 VLAN and DSCP options
Options Description
VLAN
-v
- -vlan-tagging <vlan_id>
- - L2cos-f-class <n>
- - L2cos-high <n>
- - L2cos-medium<n>
- - L2cos-low <n>
DSCP
- -dscp-f-class <n>
- -dscp-high <n>
- -dscp-medium <n>
- -dscp-low <n>
The <vlan_id> parameter sets the VLAN tag value in the header assigning the
traffic to that specific VLAN. The VLAN tag is an integer value between 1 and
4094. Consult with your WAN administrator to discuss VLAN implementation.
The IEEE 802.1P specification establishes eight levels of L2CoS priority. A value
of 7 is the highest priority, and a value of 0 is the lowest priority. Consult with
your WAN administrator to discuss L2CoS implementation.
The DSCP options allow you to specify a DSCP marking tag on a per-Qos basis
for each FCIP circuit. On the 7800 switch and FX8-24 blade, only traffic going
over the FCIP tunnel is marked. A decimal value from 0 through 63 may be used
to specify the DSCP marking tag. Consult with your WAN administrator to
discuss DSCP implementation before assigning a DSCP marking tag.
TABLE 2 Default Mapping of DSCP priorities to L2Cos Priorities (Continued)
DSCP priority/bits L2CoS priority/bits Assigned to: