Dscp And Vlan Support On Fcip Circuits - Brocade Communications Systems StoreFabric SN6500B Administrator's Manual

TABLE 4
DSCP priority/bits
59 / 111011
63 / 111111

DSCP and VLAN support on FCIP circuits

When VLAN tag is created on an FCIP circuit, all traffic over that circuit will use the specified VLAN.
VLAN tagging of FCIP traffic is often used to identify multiple circuits of different VE_Ports coming
from an XGE port into a 10GE port on a switch or router. If the switch or router has its 10GE
interface configured as a VLAN trunk and each circuit has its own tagging, then the switch or router
can direct the traffic accordingly.
Options listed in
enable VLAN support on circuit 0 and on the portcfg fcipcircuit command for additional circuits.
.
TABLE 5
Options
VLAN
L2CoS
DSCP
Examples
The following example shows the VLAN tag option on the fciptunnel create command. The VLAN tag
applies only to circuit 0.
Fabric OS FCIP Administrator's Guide
53-1002748-01
Default mapping of DSCP priorities to L2CoS priorities (Continued)
L2CoS priority/bits
4 / 100
0 / 000
Table 5 on page 27 are available on both the portcfg fciptunnel command to
VLAN and DSCP options
-v
- -vlan-tagging <vlan_id>
- - L2cos-f-class <n>
- - L2cos-high <n>
- - L2cos-medium<n>
- - L2cos-low <n>
- -dscp-f-class <n>
- -dscp-high <n>
- -dscp-medium <n>
- -dscp-low <n>
switch:admin> portcfg fciptunnel 16 create 192.168.2.20 192.168.2.10 100000 -v
100
Operation Succeeded
Assigned to:
High QoS
Reserved
Description
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 and the default.
Values can be applied a per-QoS basis for each FCIP circuit. 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.
QoS, DSCP, and VLANs
2
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