1. Maintenance Items
  2. 0013
  3. Request
Requested revision
Standard:802.1Q-2011Clause:5.4.4, 5.16.3
Clause title:Multiple Stream Registration Protocol (MSRP)
Rationale for revision
MSRPDUs are exchanged by using the "Individual LAN Scope group address, 
Nearest Bridge group address", as stated in 35.2.2.1. The "Individual 
LAN Scope group address, Nearest Bridge group address" is specified in 
the tables 8-1, 8-2 and 8-3.

Clause 5.4.4 and 5.16.3 state, that MSRP uses "the group MAC addresses 
reserved for use by MRP applications"/"the MSRP Application address" 
specified in table 10-1. Table 10-1 specifies the "MRP application 
addresses" for MMRP and MVRP, but not for MSRP. A separate "MSRP 
Application address" does not exist.
Proposed text
Change (5.4.4)
"Exchange MRPDUs as required by those state machines, formatted in 
accordance with the generic PDU format described in 10.8, and able to 
carry application-specific information as defined in Clause 35, using 
the group MAC addresses reserved for use by MRP applications, as defined 
in Table 10-1."
to
"Exchange MRPDUs as required by those state machines, formatted in 
accordance with the generic PDU format described in 10.8, and able to 
carry application-specific information as defined in Clause 35, using 
the "Individual LAN Scope group address, Nearest Bridge group address" 
as defined in Table 8-1, Table 8-2 and Table 8-3 (C-VLAN, S-VLAN and 
TPMR component Reserved addresses, respectively)."

Change (5.16.3)
"Exchange MPDUs as required by the MRP state machine(s) implemented, 
formatted in accordance with the generic PDU format described in 10.8, 
and able to carry application-specific information as defined in 35.2.2, 
using the MSRP Application address as defined in Table 10-1."
to
"Exchange MPDUs as required by the MRP state machine(s) implemented, 
formatted in accordance with the generic PDU format described in 10.8, 
and able to carry application-specific information as defined in 35.2.2, 
using the "Individual LAN Scope group address, Nearest Bridge group 
address" as defined in Table 8-1, Table 8-2 and Table 8-3 (C-VLAN, 
S-VLAN and TPMR component Reserved addresses, respectively)."
Impact on existing networks
As there is no seperate MSRP address in table 10-1 there should be no impact on existing networks.
Originator
Name:Christian BoigerEmail:christian.boiger@hdu-deggendorf.de
Affiliation:Deggendorf University, Hirschmann Automation &
Submitted:2011-10-27