Cisco WS-X6416-GE-MT - Interface Module - Expansion Instrukcja Użytkownika Pobierz pdf (Strona 27)

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physical ports on that port channel. To change parameters of all ports in an EtherChannel group,

the configuration should be applied to the port channel interface. Although Cisco IOS Software

allows configuration on physical interfaces, the configuration will not be propagated to the port

channel bundle. If the interfaces within the bundle are not identical, the channel will not form.

Cisco Catalyst OS Cisco IOS Software

set port channel 3/1-8 1 desirable interface range gigabit 3/1—8

switchport

channel-group 1 mode desirable

no shut

interface port-channel 1

switchport trunk encapsulation dot1q

no shut

The Cisco Catalyst OS supports a maximum of 128 EtherChannel groups, and Cisco IOS Software

supports a maximum of 64 EtherChannel groups (128 EtherChannel groups are supported in

Cisco IOS Software Release 12.2(18)SXE and later).

EtherChannel Negotiation

Cisco IOS Software and Cisco Catalyst OS EtherChannel groups support both PAgP and LACP,

which allows for automatic creation of port channels with other devices. PAgP is a Cisco

proprietary protocol for channel negotiation, and LACP is a standard for channel negotiation (IEEE

802.3ad). The negotiation modes of both protocols are nearly identical. Note that the negotiation

keywords are the same for both the Cisco Catalyst OS and Cisco IOS Software. For more details

about PAgP and LACP configuration, refer to the following configuration guides:

●

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

●

http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/sw_7_3/confg_gd/channel.ht

PAgP configuration example:

Cisco Catalyst OS Cisco IOS Software

set channelprotocol pagp

set port channel 3/1-8 1 desirable

interface range gigabit 3/1—8

switchport

channel-protocol pagp

channel-group 1 mode desirable

interface port-channel 1

switchport trunk encapsulation dot1q

no shut

LACP configuration example:

Cisco Catalyst OS Cisco IOS Software

set channelprotocol lacp

set port channel 3/1-8 1 desirable

interface range gigabit 3/1—8

switchport

channel-protocol lacp

channel-group 1 mode active

interface port-channel 1

switchport trunk encapsulation dot1q

no shut

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