Hi Van,
channel-group
To assigns a physical interface to an EtherChannel, use the channel-group command in interface
configuration mode. To unassaign the interface, use the no form of this command.
channel-group channel_id mode {active | passive | on}
no channel-group channel_id
Syntax Description
Usage Guidelines Each channel group can have eight active interfaces. Note that you can assign up to 16 interfaces to a channel group. While only eight interfaces can be active, the remaining interfaces can act as standby
links in case of interface failure.
All interfaces in the channel group must be the same type and speed. The first interface added to the channel group determines the correct type and speed. channel_id Specifies the EtherChannel to which you want to assign this interface,
between 1 and 48.
mode {active | passive |
on}
You can configure each physical interface in an EtherChannel to be:
• Active—Sends and receives Link Aggregation Control Protocol (LACP)
updates. An active EtherChannel can establish connectivity with either
an active or a passive EtherChannel. You should use the active mode
unless you need to minimize the amount of LACP traffic.
• Passive—Receives LACP updates. A passive EtherChannel can only
establish connectivity with an active EtherChannel.
• On—The EtherChannel is always on, and LACP is not used. An “on”
EtherChannel can only establish a connection with another “on”
EtherChannel.
Command Mode
Firewall Mode Security Context
Routed Transparent Single
Multiple
Context System
Interface configuration • • • — •
Release Modification
8.4(1) We introduced this command.
4-37
Cisco ASA 5500 Series Command Reference
Chapter 4 cache through clear compression Commands
channel-group
If the port-channel interface for this channel ID does not yet exist in the configuration, one will be added:
interface port-channel channel_id
The Link Aggregation Control Protocol (LACP) aggregates interfaces by exchanging the Link
Aggregation Control Protocol Data Units (LACPDUs) between two network devices. LACP coordinates
the automatic addition and deletion of links to the EtherChannel without user intervention. It also
handles misconfigurations and checks that both ends of member interfaces are connected to the correct
channel group. “On” mode cannot use standby interfaces in the channel group when an interface goes
down, and the connectivity and configurations are not checked.
Examples The following example assigns interfaces to channel group 1:
hostname(config)# interface GigabitEthernet0/0
hostname(config-if)# channel-group 1 mode active
hostname(config-if)# interface GigabitEthernet0/1
hostname(config-if)# channel-group 1 mode active
hostname(config-if)# interface GigabitEthernet0/2
hostname(config-if)# channel-group 1 mode passive
Related Commands Command Description
interface port-channel Configures an EtherChannel.
lacp max-bundle Specifies the maximum number of active interfaces allowed in the
channel group.
lacp port-priority Sets the priority for a physical interface in the channel group.
lacp system-priority Sets the LACP system priority.
port-channel load-balance Configures the load-balancing algorithm.
port-channel min-bundle Specifies the minimum number of active interfaces required for
the port-channel interface to become active.
show lacp Displays LACP information such as traffic statistics, system
identifier and neighbor details.
show port-channel Displays EtherChannel information in a detailed and one-line
summary form. This command also displays the port and
port-channel information.
show port-channel load-balance Displays port-channel load-balance information along with the
hash result and member interface selected for a given set of
parameters.
Please do rate if the given information helps.
By
Karthik
