Interface Configuration Guide 7705 SAR Interfaces
Edition: 01 3HE 11011 AAAC TQZZA 397
discard-unknown-source
Syntax [no] discard-unknown-source
Context config>card>mda>ring
Description This command specifies that packets with an unknown source MAC address received on a
ring port will be dropped if the source MAC is not already in the FDB (that is, the source MAC
was not learned before the discard-unknown-source command was enabled or is not a
static entry already created for the packet MAC).
When disabled, the packets are flooded to the other ring port or forwarded to the v-port (if the
packets are addressed to the v-port).
The no form of this command disables discard-unknown-source.
Default no discard-unknown-source
fdb-table-high-wmark
Syntax fdb-table-high-wmark high-water-mark
no fdb-table-high-wmark
Context config>card>mda>ring
Description This command specifies the upper threshold value for learned FDB entries. The high-water-
mark is configured as a percentage of the FDB. When the number of FDB entries exceeds
the high-water-mark, the system raises a log event.
The no form of this command returns the maximum FDB table high-water-mark to the default
(95%).
Default no fdb-table-high-wmark
Parameters high-water-mark — specifies the upper threshold for FDB entries as a percentage of FDB
table size, which when exceeded, causes the system to raise a log event
Values 0 to 100
fdb-table-size
Syntax fdb-table-size table-size
no fdb-table-size
Context config>card>mda>ring
Description This command specifies the maximum number of MAC entries in the dynamic FDB for the
ring.
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