Upgrade And Downgrade Restrictions; Difference Between Te Ports And Tf-Tnp Ports - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 16 Configuring Trunking
D r a f t Ve r s i o n 3 - 0 3 D e c 2 0 0 8 - C i s c o C o n f i d e n t i a l
Figure 16-4
Switch 1
VSAN 2 and VSAN 3 are effectively merged with overlapping entries in the name server and the zone
applications. The Cisco MDS 9000 Fabric Manager helps detect such topologies. Refer to the Cisco MDS
9000 Family Fabric Manager Configuration Guide.

Upgrade and Downgrade Restrictions

The trunking and channeling feature includes the following upgrade and downgrade restrictions:
•
•

Difference Between TE Ports and TF-TNP Ports

In case of TE ports, the VSAN will in be init state when VSAN is coming up on that interface and when
peers are in negotiating phase. Once the handshake is done, VSAN will be moved to up state in the
successful case, and isolated state in the case of failure. Deveice Manager will show the port status as
Amber during initializing state and it will be green once VSANs are up.
This example shows the Trunk VSAN states of a TE port:
Switch# show interface fc2/15
fc2/15 is trunking
OL-18084-01, Cisco MDS NX-OS Release 4.x
Third-Party Switch VSAN Mismatch
Third-party switches
VSAN 2
E port
Switch 2
When F port trunking or channeling is configured on a link, the switch cannot be downgraded to
Cisco MDS SAN-OS Release 3.x and NX-OS Release 4.1(1b), or earlier.
Affect of an Upgrade on the EVFP Isolated VSAN—If you are upgrading from a SAN-OS Release
3.x to NX-OS Release 4.1(3a), and you have not created VSAN 4079, the NX-OS software will
automatically create VSAN 4079 and reserve it for EVFP use.
If VSAN 4079 is reserved for EVFP use, the switchport trunk allowed vsan command will filter out
VSAN 4079 from the allowed list, as shown in the following example:
switch(config-if)# switchport trunk allowed vsan 1-4080
1-4078,4080
switch(config-if)#
If you have created VSAN 4079, the upgrade to NX-OS Release 4.1(3a) will have no affect onVSAN
4079.
If you downgrade after NX-OS Release 4.1(3a) creates VSAN 4079 and reserves it for EVFP use,
the VSAN will no longer be reserved.
Hardware is Fibre Channel, SFP is short wave laser w/o OFC (SN)
Port WWN is 20:4f:00:0d:ec:6d:2b:40
Peer port WWN is 20:0a:00:0d:ec:3f:ab:80
Admin port mode is auto, trunk mode is on
snmp link state traps are enabled
Port mode is TE
Port vsan is 1
Speed is 2 Gbps
Rate mode is dedicated
Transmit B2B Credit is 16
Receive B2B Credit is 250
Trunking Guidelines and Restrictions
VSAN 3
E port
Switch 3
Cisco MDS 9000 Family CLI Configuration Guide
16-5