Chapter 16 Configuring Trunking; Key Concepts; Trunking Guidelines And Restrictions - 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
Link Number
1a and 1b
2
3
4
5
1. These features are not supported currently.

Key Concepts

The trunking feature includes the following key concepts:
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Trunking Guidelines and Restrictions

The trunking feature includes the following guidelines and restrictions:
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OL-18084-01, Cisco MDS NX-OS Release 4.x
Link Description
F port trunk with N port.
F port trunk with NP port.
F PortChannnel with NP port.
Trunked F PortChannel with NP port.
Trunking NP port with third-party core switch F port.
TE port—If trunk mode is enabled in an E port and that port becomes operational as a trunking E
port, it is referred to as a TE port.
TF port—If trunk mode is enabled in an F port (see the link 2 in
operational as a trunking F port, it is referred to as a TF port.
TN port—If trunk mode is enabled (not currently supported) in an N port (see the link 1b in
Figure 16-2) and that port becomes operational as a trunking N port, it is referred to as a TN port.
TNP port—If trunk mode is enabled in an NP port (see the link 2 in
becomes operational as a trunking NP port, it is referred to as a TNP port.
TF PortChannel—If trunk mode is enabled in an F PortChannel (see the link 4 in
that PortChannel becomes operational as a trunking F PortChannel, it is referred to as TF
PortChannel. Cisco Port Trunking Protocol (PTP) is used to carry tagged frames.
TF-TN port link—A single link can be established to connect an F port to an HBA to carry tagged
frames (see the link 1a and 1b in
server can reach multiple VSANs through a TF port without inter-VSAN routing (IVR).
TF-TNP port link—A single link can be established to connect an TF port to an TNP port using the
PTP protocol to carry tagged frames (see the link 2 in
supports trunking PortChannels.
Note The TF-TNP port link between a third-party NPV core and a Cisco NPV switch is
established using the EVFP protocol.
A Fibre Channel VSAN is called Virtual Fabric and uses a VF_ID in place of the VSAN ID. By
default, the VF_ID is 1 for all ports. When an N port supports trunking, a PWWN is defined for each
VSAN and called as logical PWWN. In the case of MDS core switches, the PWWNs for which the
N port requests additional FC_IDs are called virtual PWWNs.
F ports support trunking in Fx mode.
1
Figure 16-2) using Exchange Virtual Fabrics Protocol (EVFP). A
Figure
Cisco MDS 9000 Family CLI Configuration Guide
Trunking Guidelines and Restrictions
1
Figure 16-2) and that port becomes
Figure 16-2) and that port
Figure
16-2). PTP is used because PTP also
16-2) and
16-3