Dell Force10 E600i FTOS Version 8.4.1.5 Configuration Guide for ExaScale - Page 430
Assign an IP address to a port channel, Delete or disable a port channel
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www.dell.com | support.dell.com Assign an IP address to a port channel You can assign an IP address to a port channel and use port channels in Layer 3 routing protocols. To assign an IP address, use the following command in the INTERFACE mode: Command Syntax Command Mode Purpose ip address ip-address INTERFACE mask [secondary] Configure an IP address and mask on the interface. • ip-address mask: enter an address in dotted-decimal format (A.B.C.D) and the mask must be in slash format (/24). • secondary: the IP address is the interface's backup IP address. You can configure up to eight secondary IP addresses. Delete or disable a port channel To delete a port channel, you must be in the CONFIGURATION mode and use the no interface portchannel channel-number command. When you disable a port channel (using the shutdown command) all interfaces within the port channel are operationally down also. Load balancing through port channels FTOS uses hash algorithms for distributing traffic evenly over channel members in a port channel (LAG). The hash algorithm distributes traffic among ECMP paths and LAG members. The distribution is based on a flow, except for packet-based hashing. A flow is identified by the hash and is assigned to one link. In packet-based hashing, a single flow can be distributed on the LAG and uses one link. Packet based hashing is used to load balance traffic across a port-channel based on the IP Identifier field within the packet. Load balancing uses source and destination packet information to get the greatest advantage of resources by distributing traffic over multiple paths when transferring data to a destination. FTOS allows you to modify the hashing algorithms used for flows and for fragments. The load-balance and hash-algorithm commands are available for modifying the distribution algorithms. Their syntax and implementation are somewhat different between the E-Series and the C-Series and S-Series. Note: Hash-based load-balancing on MPLS does not work when packet-based hashing (load-balance ip-selection packet-based) is enabled. E-Series load-balancing On the E-Series, the default load-balance criteria are a 5-tuple, as follows: • IP source address • IP destination address • Protocol type • TCP/UDP source port • TCP/UDP destination port 430 | Interfaces
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