Name
Framed-Compression
Synopsis
Attribute Number |
13 |
Length |
6 |
Value |
ENUM |
Allowed in |
Access-Request, Access-Accept |
Prohibited in |
Access-Reject, Access-Challenge |
Presence in Packet |
Not required |
Maximum Iterations |
Unlimited |
This attribute states the intent for and type of compression to be used over the connection. The value is of the enumerated type and can range from 0 to 3. Table 3-1 lists the corresponding values and compression types allowed for this attribute.
Value |
Associated compression type |
0 |
None |
1 |
Van-Jacobsen-Header-Compression |
2 |
IPX-Header-Compression |
3 |
Stac-LZS-Compression |
For IP-based connections, the Van-Jacobsen compression algorithm is used. For all other connection protocols, the value listed in this attribute determines the compression to be used.
The RADIUS RFC permits multiple instances of the
Framed-Compression
attribute in the
Access-Request
and
Access-Accept
packets; if this is the case, then
it is the client gear’s responsibility to determine
the compression method best suited for that particular connection. It
is important to note that if the compression-type value received in a
packet is not supported by the RADIUS client gear, it is
not under any
obligation per the RFCs to honor that request.
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