Reference Guide

IPv4 Routing | 705
Usage
Information
By default this command is disabled. When enabled, all the Layer 3 unicast routed
data traffic going through a VLAN member port is flooded across all the member
ports of that VLAN. There might be some ARP table entries which are resolved
through ARP packets which had Ethernet MAC SA different from MAC information
inside the ARP packet. This unicast data traffic flooding occurs only for those
packets which use these ARP entries.
load-balance (C-Series and S-Series)
c s
By default for C-Series and S-Series, FTOS uses an IP 4-tuple (IP SA, IP DA, Source
Port, and Destination Port) to distribute IP traffic over members of a Port Channel as
well as equal-cost paths. To designate another method to balance traffic over Port
Channel members, use the load-balance command.
Syntax
load-balance {ip-selection [dest-ip | source-ip]} | {mac [dest-mac | source-dest-mac |
source-mac
]} | {tcp-udp | ingress-port [enable]}
To return to the default setting (IP 4-tuple), use the
no version of the command.
Parameters
Defaults
IP 4-tuple (IP SA, IP DA, Source Port, Destination Port)
ip-selection {dest-ip |
source-ip
}
Enter the keywords to distribute IP traffic based on the following
criteria:
• dest-ip — Uses destination IP address and destination port fields
to hash. The hashing mechanism returns a 3-bit index indicating
to which port the packet should be forwarded.
• source-ip — Uses source IP address and source port fields to
hash. The hashing mechanism returns a 3-bit index indicating to
which port the packet should be forwarded.
mac {dest-mac |
source-dest-mac |
source-mac
}
Enter the keywords to distribute MAC traffic based on the following
criteria:
• dest-mac — Uses the destination MAC address, VLAN,
Ethertype, source module ID and source port ID fields to hash.
The hashing mechanism returns a 3-bit index indicating to which
port the packet should be forwarded.
• source-dest-mac — Uses the destination and source MAC
address, VLAN, Ethertype, source module ID and source port ID
fields to hash. The hashing mechanism returns a 3-bit index
indicating to which port the packet should be forwarded.
• source-mac — Uses the source MAC address, VLAN,
Ethertype, source module ID and source port ID fields to hash.
The hashing mechanism returns a 3-bit index indicating to which
port the packet should be forwarded.
tcp-udp enable
Enter the keywords to distribute traffic based on the following:
• enable — Takes the TCP/UDP source and destination ports into
consideration when doing hash computations. (By default, this is
enabled)
ingress-port enable
Enter the keywords to distribute traffic based on the following:
enable — Takes the source port into consideration when doing hash
computations. (By default, this is disabled.)