Interface Configuration
7750 SR OS Interface Configuration Guide Page 499
megapools
Syntax megapools slot-number
megapools slot-number fp forwarding-plane [service-id service-id] [queue-group queue-
group-name] [ingress | egress]
Context show
Description This command displays megapool information. A megapool is a mechanism the IOM-3 flexpath
traffic manager uses to allow oversubscription of buffer pools. Every buffer pool is created in the
context of a megapool.
By default, all buffer pools are associated with a single megapool and the pools are not
oversubscribed. When WRED queue support is enabled on the IOM, three megapools are used.
• The original megapool services the default and named pools.
• The second megapool services the system internal use pools.
• The third megapool is used by the buffer pools used by the WRED queues.
The traffic manager buffers are allocated to the three megapools without oversubscription. The
WRED queue pools are allowed to oversubscribe their megapool, but the megapool protects the pools
associated with the other megapools from buffer starvation that could be caused by that
oversubscription.
Parameters slot-number — Displays information for the specified card slot.
fp-number — The fp-number parameter is optional following the fp command. If omitted, the system
assumes forwarding plane number 1.
queue-group queue-group-name — Displays information for the specified port queue group name.
ingress — Displays ingress queue group information.
egress — Displays egress queue group information.
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