FTOS Configuration Guide for the C-Series - Force10 Networks

To see which port channels are members of VLANs, enter the show vlan command in the EXEC privilege
mode.
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 mask
[secondary]
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.
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 alorithms. Their syntax and
implementation are somewhat different between the E-Series and the C-Series and S-Series.
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
INTERFACE 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.
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