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Intel
®
NetStructure™ 480T Routing Switch User Guide
Defining Protocol Filters
For more information on
SNAP for Ethernet
protocol types, see
TR 11802-5:1997 (ISO/
IEC) [ANSI/IEEE std.
802.1H, 1997 Edition]. For
more information on
standards see "Technical
Specifications and
Supported Limits" on page
431.
If necessary, you can define a customized protocol filter, based on
Ethertype, Logical Link Control (LLC), and/or Subnetwork Access
Protocol (SNAP). Up to six protocols may be part of a protocol
filter.
To define a protocol filter:
1. Create a protocol using this command:
create protocol <protocol_name>
For example:
create protocol fred
The protocol name can have a maximum of 32 characters.
2. Configure the protocol using this command:
configure protocol <protocol_name> add
<protocol_type> <hex_value>
Supported protocol types include:
• etype—Ethertype
The values for
etype are four-digit hexadecimal numbers taken
from a list maintained by the IEEE. You can find this list at this
URL:
http://standards.ieee.org/regauth/ethertype/
index.html
• llc—LLC Service Advertising Protocol (SAP)
The values for
LLC are four-digit hexadecimal numbers that are
created by concatenating a two-digit LLC Destination SAP
(DSAP) and a two-digit LLC Source SAP (SSAP).
•
snap—Ethertype inside an IEEE SNAP packet encapsulation.
The values for
snap are the same as the values for etype,
described previously.
For example:
configure protocol fred add llc feff
configure protocol fred add snap 9999
You can define a maximum of fifteen protocol filters, each
containing a maximum of six protocols. All fifteen protocol filters
can be active and configured for use.