Vsan Trunking Protocol; Configuring Vsan Trunking; Guidelines And Restrictions; Enabling Or Disabling The Vsan Trunking Protocol - Cisco Nexus 5000 Series Configuration Manual

Configuring VSAN Trunking

VSAN Trunking Protocol

The trunking protocol is important for E-port and TE-port operations. It supports the following capabilities:
• Dynamic negotiation of operational trunk mode.
• Selection of a common set of trunk-allowed VSANs.
• Detection of a VSAN mismatch across an ISL.
By default, the VSAN trunking protocol is enabled. If the trunking protocol is disabled on a switch, no port
on that switch can apply new trunk configurations. Existing trunk configurations are not affected: the TE port
continues to function in trunk mode, but only supports traffic in VSANs that it negotiated with previously
(when the trunking protocol was enabled). Other switches that are directly connected to this switch are similarly
affected on the connected interfaces. If you need to merge traffic from different port VSANs across a
nontrunking ISL, disable the trunking protocol.
Configuring VSAN Trunking

Guidelines and Restrictions

When configuring VSAN trunking, note the following guidelines:
• We recommend that both ends of a VSAN trunking ISL belong to the same port VSAN. On platforms
• To avoid inconsistent configurations, disable all E ports with a shutdown command before enabling or
Difference Between TE Ports and TF-TNP Ports
In case of TE ports, the VSAN will in be initializing 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. Device Manager will show the port status as amber
during initializing state and it will be green once VSANs are up.
In case of TF ports, after the handshake, one of the allowed VSAN will be moved to up state. And all other
VSAN will be in initializing state even though the handshake with the peer is completed and successful. Each
VSAN will be moved from initializing state to up state when a server or target logs in through the trunked F
or NP ports in the corresponding VSAN.

Enabling or Disabling the VSAN Trunking Protocol

To enable or disable the VSAN trunking protocol, perform this task:
OL-xxxxx-xx
or fabric switches where the port VSANs are different, one end returns an error, and the other is not
connected.
disabling the VSAN trunking protocol.
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide
Configuring VSAN Trunking
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