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Qtech QSW-3200-28T [29/136] Interface convergent configuration

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can interconnect with active and passive mode, but passive mode only can interconnect with

active mode. The default mode of interface is ACTIVE mode.

Each convergent interface need same layer 2 features, so there are following restrictions to

interfaces in a channel group:

1. Static convergent interfaces and dynamic convergent interfaces can not be in a same

channel group, but there can be static convergent channel as well as dynamic convergent

channel.

2. Each interface in a same channel group must possess the same features as following:

interface speed rate, working mode of full duplex, STP/GVRP/GMRP function, STP cost, STP

interface priority, VLAN features (interface mode, PVID, VLAN belonged to, tag vlan list of

access interface, allowed vlan list of trunk interface) and layer 2 multicast group belonged to.

3. If modifying the feature of one interface in the channel group, other interfaces will be

modified automatically in the same place. The feature refers to point 2.

4. After convergence, static hardware item (ARL, MARL, PTABLE, VTABLE) will be

modified, but there will be delay.

5. After convergence, only host interface can send CPU packet. If STP changes status of

some interface, the status of the whole channel group will be changed.

6. After convergence, when transferring layer 2 protocol packet, STP/GARP/GNLINK will

not transfer packet to the current channel grou. If transferring to other channel group, only one

packet will be transferred.

If there are members in the channel group, this channel group cannot be deleted. Delete

interface members first.

Influence on choosing link redundancy caused by LACP system and interface priority. LACP

provides link redundancy mechanism which needs to guarantee the redundancy consistency

of two interconnected switches and user can configure redundancy link which is realized by

system and interface priority. The redundancy choosing follows the following steps:

First, determine which switch is the choosing standard. For LACP packets interaction, each of

the two switches knows each other’s LACP system priority and system MAC and compares

the LACP system priority to choose the smaller one; if the system priority is the same,

compare MAC and choose the smaller one.

Then, choose redundancy link according to the interface parameter of the chosen switch.

Compare interface LACP priority, and choose the inferior one to be redundant. If the priorities

are the same, choose the interface whose interface number is larger to be redundant.

2.4.2 Interface convergent configuration

Port LACP configuration command includes:

 Channel group configuration

Please configure it in global configuration mode:

channel-group channel-group-number

Parameter «channel-group-number» is range from 0 to 5.

For example:

! Create a channel group with the group number being 0

QTECH(config)#channel-group 0

 Delete channel group

Qtech QSW-3200-28T [29/136] Interface convergent configuration

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