System Basics Introduction
Page 226 7210 SAS D, E, K OS Basic System Configuration Guide
• System allocates 3 chunks for use by the SAP ingress ACL entries. These resources are
available for use with mac-criteria, ipv4-criteria and ipv6-64-bit match criteria.
• System allocates 1 chunk for use by SAP ingress ACL entries using ipv4-criteria. The
system fails the configuration when the number of ACL entries using ipv4-criteria
exceeds the configured limit (that is, the system does not allocate in excess of the
configured limit of 1 chunk).
• System allocates 1 chunk for use by SAP ingress ACL entries using mac-criteria when the
user associates an ingress ACL policy (with mac-criteria entries defined) with a SAP. The
system can allocate more chunks, as the user has specified the ‘max’ keyword, if a chunk
is available for use. In this particular example, (assuming user configures a SAP with a
ingress ACL policy that uses ipv6-64-bit criteria), as there are no more chunks available,
mac-criteria cannot allocate more than 1 chunk (even though it specifies the max
keyword). The system fails the configuration when the number of ACL entries with mac-
criteria exceeds the limit of 1 chunks allocated to SAP ingress ACL mac-criteria (that is,
the system does not allocate in excess of the configured limit of 3 chunks = 1 for mac-
criteria + for ipv4-criteria + 1 for ipv6-criteria).
• System allocates a chunk for use by SAP ingress ACL entries using ipv6-64-bit criteria
when user associates an ingress ACL policy (with ipv6-64-bit-criteria entries defined)
with a SAP. The system can allocate more chunks, as the user has specified the ‘max’
keyword. In this particular example, as there are no more chunks available, ipv6-64-bit
criteria cannot allocate more than 1 chunk (even though it specifies the max keyword).
The system fails the configuration when the number of ACL entries with ipv6-64-bit
criteria exceeds the limit of one chunk allocated to SAP ingress ACL match (that is, the
system does not allocate in excess of the configured limit of 3 chunks = 1 for mac-criteria
+ 1 for ipv4-criteria + 1 for ipv6-64-bit criteria).
• The system fails the user attempt to use SAP ingress ACLs with ipv6-128 bit match
criteria (and the other combinations listed above), as the user has disabled use of these
criteria.
In the example-2 above, the user can execute no ipv4-match-enable to disable use of ipv4-criteria.
The system checks if there are SAPs using ipv4-criteria and fails the command if one exists; else it
the chunk freed, is for use with either mac-criteria or ipv6-64-bit criteria. The entire chunk is
allocated to mac-criteria, if the first SAP that needs resources requests for mac-criteria and there
are no entries in the chunk already allocated to mac-criteria, leaving no more resources for use by
ipv6-64-bit criteria or the entire chunk is allocated to ipv6-64-bit criteria, if the first SAP that
needs resources requests for ipv6-64-bit criteria and there are no entries in the chunk already
allocated to ipv6-64-bit criteria, leaving no resources for use by mac-criteria.
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