Cisco Aci Lacp

Cisco ACI LACP

The Cisco Application Centric Infrastructure (ACI) is a data center networking solution that unifies computation, networking, storage access, and security. The Cisco ACI solution offers a centralized policy model that enables application agility and data center automation. The Cisco ACI logical architecture is based on application profiles and abstractions that allow the infrastructure to be configured and managed as a single entity.

The Cisco ACI Leaf and Spine Infrastructure uses the Link Aggregation Control Protocol (LACP) to dynamically configure link aggregation groups (LAGs). LACP is a standards-based protocol that is used to bundle physical links into logical links. LACP allows multiple physical links to be aggregated together to form a single logical link. The logical link is then treated as a single link by the network devices.

LACP provides fault tolerance and increased bandwidth by bundling multiple physical links together. If one of the physical links fails, the LAG will continue to function using the remaining physical links. LACP also offers load balancing by distributing traffic across the physical links in the LAG.

The Cisco ACI LACP implementation supports the following features:

• Static LAGs: Static LAGs are manually configured and are not controlled by LACP. Static LAGs are typically used when LACP is not supported by the attached devices.

• Active LAGs: Active LAGs are controlled by LACP. LACP negotiates the LAG configuration with the attached devices. Active LAGs provide increased availability and bandwidth by bundling multiple physical links together.

• Passive LAGs: Passive LAGs are controlled by LACP. LACP passively waits for the attached devices to initiate the LAG configuration. Passive LAGs provide increased availability and bandwidth by bundling multiple physical links together.

• Dynamic LAGs: Dynamic LAGs are controlled by LACP. LACP dynamically configures the LAG based on the capabilities of the attached devices. Dynamic LAGs provide increased availability and bandwidth by bundling multiple physical links together.

The Cisco ACI LACP implementation supports the following LAG modes:

• Active mode: In active mode, LACP sends LACP packets periodically to establish and maintain the LAG configuration with the attached devices.

• Passive mode: In passive mode, LACP passively waits for the attached devices to initiate the LAG configuration.

• Dynamic mode: In dynamic mode, LACP dynamically configures the LAG based on the capabilities of the attached devices.

The Cisco ACI LACP implementation supports the following LAG hashing algorithms:

• Source MAC address: The LAG is configured using the source MAC address of the packets.

• Destination MAC address: The LAG is configured using the destination MAC address of the packets.

• Source IP address: The LAG is configured using the source IP address of the packets.

• Destination IP address: The LAG is configured using the destination IP address of the packets.

The Cisco ACI LACP implementation supports the following LAG load balancing algorithms:

• Round Robin: The LAG distributes traffic evenly across the physical links in the LAG.

• Weighted Round Robin: The LAG distributes traffic based on the weights assigned to the physical links in the LAG.

• Active/Active: The LAG distributes traffic evenly across the active physical links in the LAG.

• Active/Standby: The LAG distributes traffic across the active physical links in the LAG and standby physical links.

The Cisco ACI LACP implementation supports the following LAG selection policies:

• LAG ID: The LAG is selected based on the LAG ID.

• System ID: The LAG is selected based on the system ID.

• Port ID: The LAG is selected based on the port ID.

The Cisco ACI LACP implementation supports the following LAG failover policies:

• Link up/down: The LAG is failed over when a physical link in the LAG goes down.

• LACP timeout: The LAG is failed over when LACP times out.

• Link error: The LAG is failed over when a physical link in the LAG has errors.

The Cisco ACI LACP implementation supports the following LAG recovery policies:

• Link up/down: The LAG is recovered when a physical link in the LAG comes back up.

• LACP timeout: The LAG is recovered when LACP resumes.

• Link error: The LAG is recovered when a physical link in the LAG no longer has errors.