3Com MSR 50 Series Configuration Manual page 2191

An ACFP server supports multiple ACFP clients. Therefore, ACFP client
information, ACFP cooperation policy, and ACFP cooperation rule are organized in
the forms of tables.
ACFP server information is generated by the ACFP server itself. ACFP client
information, ACFP cooperation policy, and ACFP cooperation rule are generated
on the ACFP server after being sent by the ACFP client through the cooperation
MIB or cooperation protocol.
ACFP Information ACFP server information
Overview
ACFP server information contains the following:
■
■
■
■
Figure 640 Packet formats and the corresponding context IDs
The above-mentioned information indicates the cooperation capabilities of an
ACFP server. ACFP clients can access this information through a cooperation
protocol and cooperation MIB.
ACFP client information
ACFP client information contains the following:
Supported working mode: It can be host, pass-through, mirroring, and redirect.
An ACFP server can support multiple working modes among these four at the
same time. These two components can cooperate with each other only when
the ACFP server supports the working mode of the ACFP client.
Maximum validity of the cooperation policy: This indicates for how long the
cooperation policy of the ACFP server will remain valid.
Lastingness of cooperation policy storage: This indicates whether the ACFP
server can store the cooperation policy permanently, namely, whether the ACFP
server can keep the original cooperation policy after reboot.
Currently supported context ID type: The location of the context ID in the
packet may vary with ACFP servers. An ACFP server may support multiple types
of context IDs. There are three types of context IDs: 0 (no context ID is carried;
that is, the packet that the ACFP server send to the ACFP client carries no
context ID), 1 (the format of the packet carrying context ID can be used on the
router, and 2 (the format of the packet carrying context ID can be used on the
switch). Figure 640 shows the packet formats corresponding to different
context IDs (the Context filed indicates the context ID location):
Packet format when the context ID type is 0
VLAN type
DMAC SMAC
(8100)
Packet format when the context ID type is 1
VLAN type
DMAC SMAC
(8100)
Packet format when the context ID type is 2
VLAN type
DMAC SMAC
(8100)
PCP CFI VLAN ID
(3-digit) (1-digit) (12-digit)
PCP CFI Context
(3-digit ) (1-digit) (1-4094)
PCP CFI VLAN ID
(3-digit ) (1-digit) (1-4094)
Introduction to ACFP 2191
Type
IP packet
(0800)
Type
IP packet
(0800)
Context Type
IP packet
(32-digit)
(0800)