Junos® OS Ethernet Interfaces Configuration ... - Juniper Networks

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OS 12.3 Ethernet Interfaces Configuration Guide
Example Configuration
126
Statements
NOTE:
The following restrictions apply when configuring symmetric load balancing
on an 802.3ad LAG on MX Series routers:
• The Packet Forwarding Engine (PFE) can be configured to hash the traffic
in either symmetric or complement mode. A single PFE complex cannot
work simultaneously in both operational modes and such a configuration
can yield undesirable results.
• The per-PFE setting overrides the chassis-wide setting only for the family
configured. For the other families, the PFE complex still inherits the
chassis-wide setting (when configured) or the default setting.
• Any change in the hash key configuration requires a reboot of the FPC for
the changes to take effect.
• This feature supports VPLS, INET, and bridged traffic only.
• This feature cannot work in tandem with the per-flow-hash-seed
load-balancing option. It requires that all the PFE complexes configured in
complementary fashion share the same seed. A change in the seed between
two counterpart PFE complexes may yield undesired results.
For additional information, see the Junos OS VPNs Configuration Guide and the Junos
OS System Basics Configuration Guide.
To configure 802.3ad LAG parameters at the bundle level:
[edit interfaces]
g(x)e-fpc/pic/port {
gigether-options {
802.3ad {
bundle;
link-index number;
}
}
}
where the link-index number ranges from 0 through 15.
You can check the link index configured above using the show interfaces command:
[edit forwarding-options hash-key]
family inet {
layer-3;
layer-4;
symmetric-hash {
[complement;]
}
}
family multiservice {
source-mac;
destination-mac;
payload {
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