Technical data

26 Fabric OS FCIP Administrator’s Guide
53-1002474-01
QoS, DSCP, and VLANs
2
Examples
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
The following example creates an additional FCIP circuit with a different VLAN tag.
switch:admin> portcfg fcipcircuit 16 create 1 192.168.2.21 192.168.2.11 100000
-v 200
Operation Succeeded
The following example shows the fcipcircuit modify command that changes the VLAN tag and
L2CoS levels for circuit 0. Parameters are the same for both the create and modify options.
switch:admin> portcfg fcipcircuit 16 modify 0 -v 300 --l2cos-f-class 7
--l2cos-high 5 --l2cos-medium 3 --l2cos-low 1
The following example shows the fcipcircuit modify command that changes the DSCP values for
circuit 0. Parameters are the same for both the create and modify options.
switch:admin> portcfg fcipcircuit 16 modify 0 --dscp-f 32 --dscp-h 16 --dscp-m
8 --dscp-l 4
Operation Succeeded
The following example shows the use of the portshow command to display the tunnel and circuit
values. Use the -c option as shown to include circuit values.
switch:admin> portshow fciptunnel 16 -c
Refer to the Fabric OS Command Reference Manual for detailed command syntax and output
examples for the fcipcircuit modify command.
Managing the VLAN tag table
The VLAN tag table is used by ingress processing to filter inbound VLAN tagged frames per IP
interface. The table is used to determine how to tag a frame that is not already tagged. If a VLAN
tagged frame is received from the network and there is no entry in the VLAN tag table for the VLAN
ID, the frame is discarded. The per IP interface VLAN configuration is for non-data path traffic only,
such as ICMP, ping commands, etc. If Class-F traffic or data path traffic needs to be tagged, it must
be done through the -v, - -vlan-tagging option on the fcipcircuit create or modify command.
L2CoS
- - L2cos-f-class <n>
- - L2cos-high <n>
- - L2cos-medium<n>
- - L2cos-low <n>
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.
DSCP
- -dscp-f-class <n>
- -dscp-high <n>
- -dscp-medium <n>
- -dscp-low <n>
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 5 VLAN and DSCP options (Continued)
Options Description