Cisco WS-X6248-RJ-45 - Catalyst 6000 Expansion Module Manual de usuario descargar pdf (Pagina 18)

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Refer to the Cisco IOS Conﬁguration Guide for details on the different trunk negotiation states.

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/12_1e/swconﬁg/layer2.htm

Note:

The recommended conﬁguration for a dynamic trunk port would be desirable/auto between

neighboring devices.

The switchport trunk native vlan <vlan-id> command sets the native VLAN for an IEEE 802.1q trunk port. The

allowed parameter can be used to control the VLANs that are forwarded out that interface. In addition, the pruning

parameter can be used to control VTP pruning on the link. VLAN1 cannot be pruned, either in CatOS or Cisco IOS

Software. Both the Cisco IOS Software and CatOS allow VLAN1 to be disabled from carrying trafﬁc on trunks.

If a no switchport command is offered, all the commands related to that switchport will no longer show in

conﬁguration and the interface type will revert to a routed interface. However, if the switchport is re-enabled, then

all the previous switchport-related commands will still be reinstated.

Cisco IOS Interface Conﬁguration—Range Command

All interface types—whether routed interfaces, SVIs, or switchports—can be conﬁgured in groups. This means you

can apply conﬁguration parameters to a group of ports at once. The Cisco IOS range command allows you to

conﬁgure multiple interfaces at the same time by specifying interface range and then the range of ports. Without this

feature,youmight need to individuallyconﬁgurehundredsof ports in afullypopulatedswitch. The ports intherange

can be discontinuous across the same or different line cards. The following is a sample range conﬁguration:

Note:

The space before the dash is required, up to ﬁve comma-separated ranges are supported, and spaces are not

required before or after the comma.

The range command works for Fast Ethernet, Gigabit Ethernet, and 10 Gigabit Ethernet interfaces as seen above. It

also works with VLAN interfaces if the SVIs are already created:

Interface Range Macros can be used to identify frequently grouped ports. A speciﬁc range of ports is deﬁned in a

macro and given a name. Once created, the macro name can be used to refer to the port grouping rather than

explicitly typing in each port. This is useful when conﬁguration changes frequently apply to the same group of ports

(for example, all 10/100 server ports). This feature is not available in CatOS.

IOS(config)#int range fa3/1 – 48,gi1/1 – 2

IOS(config-if)#switchport

IOS(config-if)#switchport mode access

IOS(config-if)#switchport access vlan 2

IOS(config-if)#spanning-tree portfast

IOS(config-if)#no shut

IOS(config)#int range vlan2 - 4

IOS(config-if)# description Floor 1 access VLANs

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 41 42

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Cisco WS-X6248-RJ-45 - Catalyst 6000 Expansion Module Manual de usuario Pagina 18