Cisco Nexus 5600 Series - Page 221

These calculations assume that each ACE in the ACL results in one final TCAM entry.Note
Maximum ACL SizeScenario
Current Available TCAM Entries/2ERSPAN has single Switch Port as source with
both Tx and Rx.
Current Available TCAM Entries/3ERSPAN has multiple Switch Ports as source with
both Tx and Rx.
Current Available TCAM Entries/3ERSPAN has Port Channel (with one or more
member switch ports) as source with both Tx and
Rx.
Current Available TCAM Entries/3ERSPAN has single HIF Ports as source with both
Tx and Rx.
Current Available TCAM Entries/4ERSPAN has multiple HIF Ports as source with
both Tx and Rx.
Current Available TCAM Entries/4ERSPAN has HIF Port Channel (with one or more
member HIF ports) as source with both Tx and Rx.
•
Due to system limitations, the extent to which an ACL associated to ERSPAN session can scale depends
on the how the SPAN source is configured. The following table shows different scenarios and the
corresponding maximum ACL size supported.
These calculations assume that each ACE in the ACL results in one final TCAM entry.Note
Maximum ACL SizeScenario
Current Available TCAM Entries/2ERSPAN has single Switch Port as source with
both Tx and Rx.
Current Available TCAM Entries/3ERSPAN has multiple Switch Ports as source with
both Tx and Rx.
Current Available TCAM Entries/3ERSPAN has Port Channel (with one or more
member switch ports) as source with both Tx and
Rx.
Current Available TCAM Entries/3ERSPAN has single HIF Ports as source with both
Tx and Rx.
Current Available TCAM Entries/4ERSPAN has multiple HIF Ports as source with
both Tx and Rx.
Cisco Nexus 5600 Series NX-OS System Management Configuration Guide, Release 7.x
OL-31641-01 199
Configuring ERSPAN
Guidelines and Limitations for ERSPAN