From: Todd Veillette (tveillette@myeastern.com)
Date: Sat Sep 24 2005 - 00:58:07 GMT-3
For setting the type on the device. You can use one or the other.
-TV
----- Original Message -----
From: "Stefan Grey" <examplebrain@hotmail.com>
To: <DSchulz@dpsciences.com>; <ccielab@groupstudy.com>
Sent: Thursday, September 22, 2005 11:17 AM
Subject: RE: Etherchannel (channel-protocol pagp command)??
> Thanks, but it doesn't answer my question. I think I know what do the LACP
> and PAGP:) And I think and as it is done in many books the configuration
> for PAGP for example on the switch is following:
>
> int fa0/1
> channel-group 1 mode desirable
> switchport mode trunk
> switchport trunk enc dot1q
> int portchannel 1
> switchport mode trunk
> switchport trunk enc dot1q !!! Dot. This is the configuration.
>
> The question is what could do explicitely the "channel-protocol pagp"
> command. What is the purpuse of this command. I just read somewhere the
> same config for etherchannel as above but also with the channel-protocol
> pagp and now I wonder why it was there and what for. As for me the above
> config is just enough to configure pagp etherchannel.
>
> Thanks,
>
>
>>From: "Schulz, Dave" <DSchulz@dpsciences.com>
>>To: "Stefan Grey "
>><examplebrain@hotmail.com>,<nobody@groupstudy.com>,<ccielab@groupstudy.com>
>>Subject: RE: Etherchannel (channel-protocol pagp command)??
>>Date: Thu, 22 Sep 2005 10:38:05 -0400
>>
>>Stefan -
>>
>>This should answer your question from the Doc CD. PagP is the Cisco-prop,
>>and, LACP is IEEE standard....
>>
>>The Port Aggregation Protocol (PAgP) and Link Aggregation Control Protocol
>>(LACP) facilitate the automatic creation of EtherChannels by exchanging
>>packets between Ethernet interfaces. PAgP is a Cisco-proprietary protocol
>>that can be run only on Cisco switches and on those switches licensed by
>>licensed vendors to support PAgP. LACP is defined in IEEE 802.3ad and
>>allows Cisco switches to manage Ethernet channels between switches that
>>conform to the IEEE 802.3ad protocol.
>>
>>By using one of these protocols, a switch learns the identity of partners
>>capable of supporting either PAgP or LACP and learns the capabilities of
>>each interface. It then dynamically groups similarly configured interfaces
>>into a single logical link (channel or aggregate port); these interfaces
>>are grouped based on hardware, administrative, and port parameter
>>constraints. For example, PAgP groups the interfaces with the same speed,
>>duplex mode, native VLAN, VLAN range, and trunking status and type. After
>>grouping the links into an EtherChannel, PAgP adds the group to the
>>spanning tree as a single switch port.
>>
>>
>>
>>-----Original Message-----
>>From: nobody@groupstudy.com
>>To: ccielab@groupstudy.com
>>Sent: 9/22/2005 8:09 AM
>>Subject: Etherchannel (channel-protocol pagp command)??
>>
>>What is the purpose of channel-protocol pagp command???
>>
>>As I think when we configure Etherchannel on the switch:
>>interface fa0/1
>>channel-group mode desiramble <- this command already sets the pagp
>>active
>>mode.
>>
>>In which cases the channel-protocol pagp command may be needed could be
>>used???
>>As I read it is used to set the pagp mode :((.
>>The same question for channel-protocol lacp command.
>>
>>thanks,
>>
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