Users Guide

OS10(conf-if-eth1/1/9)# service-policy input type network-qos PFC
OS10(conf-if-eth1/1/9)# priority-flow-control mode on
OS10(config)# interface ethernet 1/1/10
OS10(conf-if-eth1/1/10)# no shutdown
OS10(conf-if-eth1/1/10)# channel-group 10 mode active
OS10(conf-if-eth1/1/10)# no switchport
OS10(conf-if-eth1/1/10)# service-policy input type network-qos PFC
OS10(conf-if-eth1/1/10)# priority-flow-control mode on
View configuration
Name server entries:
OS10# show fc ns switch brief
Total number of devices = 2
Intf# Domain FC-ID Enode-WWPN Enode-WWNN
port-channel10(Eth 1/1/9) 1 01:00:00 20:01:f4:e9:d4:a4:7d:c3
20:00:f4:e9:d4:a4:7d:c3
fibrechannel1/1/26 1 01:68:00 21:00:00:24:ff:7c:ae:0e
21:00:00:24:ff:7c:ae:0e
Zoneset details:
vFabric id: 1
Active Zoneset: zonesetA
ZoneName ZoneMember
===========================================================
zoneA *20:01:f4:e9:d4:a4:7d:c3
*21:00:00:24:ff:7c:ae:0e
Pinned port status:
OS10# show fcoe pinned-port
Interface pinned-port FCoE Status
----------------- ---------------- -----------------
Po 10 Eth 1/1/9 Up
Multiswitch fabric (E Port)
E Ports are interfaces that connect the FC switches to form a multiswitch SAN fabric. These ports carry control frames
between the switches to configure and maintain the fabric. An Inter-Switch Link (ISL) is created when you connect two E Ports
to one another. FC ISL maintains the information in FC frames as the traffic flows between multiple switches.
The multiswitch configuration sets the port mode as E. The switch port initialization for an E Port includes the exchange of
Exchange link parameters (ELP) message sequences, on the ISL between two E Ports.
Use the multiswitch option to enable the multiswitch fabric mode. In the multiswitch fabric mode, the default port mode is F.
You can enable the E Port mode by configuring the port mode as E. When the E port becomes operationally up, the link
initialization starts, which include the exchange of link parameters (ELP) with the peer switch through the ISL. On successful
exchange of ELP, the switches are allowed to participate in principal switch election. Delete multiswitch configurations when
disabling a feature. You can disable the multiswitch mode only if you delete the related configurations.
Principal switch selection
A principal switch is a switch that assigns and maintains a unique domain ID across the fabric. During the principal switch
selection, the switch with the highest priority becomes the principal switch. If two switches have the same priority, the switch
with lower WWN becomes the principal switch. The valid range to set the priority is 1, and from 3 to 255. Priority 1 has the
highest priority. A switch with priority 255 cannot become the principal switch. You can modify the switch priority only when the
vfabric is in inactive state. You can activate the vfabric only by adding VLAN and fcmap configuration under the vfabric
configuration view. Ensure to configure the switch priority before activating the vfabric.
An ISL that points towards the principal switch is called an upstream principal ISL, which is discovered during principal switch
election. After completing the fabric reconfiguration, the local switch requests for domain ID allocation through an upstream
principal ISL. An ISL that points away from the principal switch is called a downstream principal ISL. Link failure results in
Fibre Channel
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