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With channel groups, the physical interface must have the same configuration parameters as the port-channel interface (except for speed and duplex settings).<br />
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If the channel group is up and correctly configured, any changes made to the port-channel interface will be pushed down to the physical interface. However, once the port-channel is up, changes to the physical interface will not necessarily be applied to the port-channel interface. <br />
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So you can either (manually) change the physical interfaces AND the port-channel interface. &nbsp;Or you can just change the port channel interface.<br />
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I would go with the latter.
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With channel groups, the physical interface must have the same configuration parameters as the port-channel interface (except for speed and duplex settings).

If the channel group is up and correctly configured, any changes made to the port-channel interface will be pushed down to the physical interface. However, once the port-channel is up, changes to the physical interface will not necessarily be applied to the port-channel interface.

So you can either (manually) change the physical interfaces AND the port-channel interface.  Or you can just change the port channel interface.

I would go with the latter.

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Can you explain why you accepted miftaul's answer instead of mine? They look the same to me.
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Can you explain why you accepted miftaul's answer instead of mine? They look the same to me.

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I have 2 physical interfaces which are part of trunk. I have the corresponding port channel.<br />
To add a new VLAN to the trunk &nbsp;it is recommended to add it in port channel rather than in the physical interface.<br />
Would like to know what is the reason we need to add in the port channel instead of adding to the physical interface.<br />
What will happen if i add the new VLAN to the physical interface.
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I have 2 physical interfaces which are part of trunk. I have the corresponding port channel.
To add a new VLAN to the trunk  it is recommended to add it in port channel rather than in the physical interface.
Would like to know what is the reason we need to add in the port channel instead of adding to the physical interface.
What will happen if i add the new VLAN to the physical interface.

PortChannel Configuration

Networking software modules are interfaced with a framework implemented on the machine's operating system that implements the networking functionality of the operating system. The best known frameworks are the TCP/IP model and the OSI model. Systems typically do not use a single protocol to handle a transmission. Instead they use a set of cooperating protocols, sometimes called a protocol family or protocol suite.[9] Some of the best known protocol suites include: IPX/SPX, X.25, AX.25, AppleTalk and TCP/IP. Other protocols indirectly related to networking include the hypertext transfer protocol (HTTP) and its related technologies, Dynamic Host Configuration Protocol (DHCP), Domain Name Server (DNS) and other Internet protocols.

Networking Protocols

Network Management involves issues that are independent of specific hardware or software, including email policies, upgrade planning, backup scheduling and working with managed service providers for Desktop-As-A-Service (DaaS), Software-As-A-Service (SaaS) and the like through the use of tools, coupled with manufacturer standards, best practice guidelines, policies and procedures plus all other relevant documentation. Network management also includes monitoring, alerting and reporting, management reporting, planning for device or service updates, the backup of configurations, the setting of key performance indicators and measures (KPIs/KPMs), associated service level agreements and problem records as part of the IT Service Management (ITSM) framework.

Network Management

Networking hardware includes the physical devices facilitating the use of a computer network. Typically, networking hardware includes gateways, routers, network bridges, modems, wireless access points, networking cables, line drivers, switches, hubs, and repeaters. But it also includes hybrid network devices such as multilayer switches, protocol converters, bridge routers, proxy servers, firewalls, network address translators, multiplexers, network interface controllers, wireless network interface controllers, ISDN terminal adapters and other related hardware.