Notes For Catalyst 4500 Series Switches; Supported Hardware And Software; Trustsec Sgt And Sgacl Configuration Guidelines And Limitations - Cisco TrustSec Configuration Manual

Notes for Catalyst 4500 Series Switches

Revised: April 24, 2013, OL-22192-01

Supported Hardware and Software

For a complete table of features, platforms, and IOS images supported see the latest Product Bulletins
at the following URL:
http://www.cisco.com/en/US/netsol/ns1051/index.html
See also, the Matrix of Cisco TrustSec-Enabled Infrastructure at the following URL:
http://www.cisco.com/en/US/solutions/ns170/ns896/ns1051/trustsec_matrix.html
TrustSec SGT and SGACL Configuration Guidelines and
Limitations
The following guidelines and limitations apply to configuring Cisco TrustSec SGT and SGACL on
Catalyst WS-X45-SUP7-E/SUP7L-E and WS-C4500X-32 switches:
Propagation of Security Group Tag in the CMD header is supported on the supervisor engine uplink
ports, the WS-X47xx series line cards, and the WS-X4640-CSFP-E linecard.
The way Destination Security tag (DGT) is derived for switched traffic (i.e. traffic forwarded between
ports in the same VLAN or subnet) is restricted:
•
•
Note
OL-22192-01
A maximum of 2000 IP-SGT mappings exists for DGT derivation. Though you can configure
IP-SGT mappings above this limit, such mappings cannot be used to derive DGT for switched
traffic. You can, however, use them to derive DGT for other types of traffic (e.g. routed traffic).
We cannot derive the DGT using IP subnet to SGT mapping. It can be derived only from IP address
(with a /32 prefix) to SGT mapping.
None of the previous restrictions exist for deriving either Source Security Tag (SGT) for any type
of traffic, or DGT for routed traffic (i.e. traffic forwarded between ports of different VLANs or
subnets).
A P P E N D I X
Cisco TrustSec Configuration Guide
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