Cabletron Systems SFCS-1000 사용자 설명서
5-2
Hardware Maintenance Procedures
5.1.2
Multicast Mode
When hot-inserting or hot-swapping a network module, the mode in which
the switch is running must also be considered. A Cabletron 200 Series switch
can operate in one of two multicast modes: extended mode or non-extended
mode.
the switch is running must also be considered. A Cabletron 200 Series switch
can operate in one of two multicast modes: extended mode or non-extended
mode.
• Extended mode - The added features of Series C network modules
give Cabletron switches greater flexibility when choosing VCIs for
multicast connections. This flexibility provides more successful mul-
ticast (point-to-multipoint, or PMP) connection setups. If a switch
fabric contains no network modules or if it contains only Series C net-
work modules, the switch will operate in extended mode.
multicast connections. This flexibility provides more successful mul-
ticast (point-to-multipoint, or PMP) connection setups. If a switch
fabric contains no network modules or if it contains only Series C net-
work modules, the switch will operate in extended mode.
• Non-extended mode - If a switch fabric contains at least one Series A
or at least one Series B network module, that switch fabric will oper-
ate in non-extended (or mixed) mode.
ate in non-extended (or mixed) mode.
NOTE:
The mode in which the switch operates is
determined each time the SCP restarts. If a
switch is running in extended mode and a
Series A or B network module is hot-inserted,
the switch will not automatically revert to
non-extended mode. The switch must be
restarted immediately so that it operates in
non-extended mode. If it is not restarted, all
multicast connections fail on the Series A or B
network module.
determined each time the SCP restarts. If a
switch is running in extended mode and a
Series A or B network module is hot-inserted,
the switch will not automatically revert to
non-extended mode. The switch must be
restarted immediately so that it operates in
non-extended mode. If it is not restarted, all
multicast connections fail on the Series A or B
network module.
You can display the multicast mode in which your switch is operating by
using the configuration board show command in the ATM Management
Interface (AMI).
using the configuration board show command in the ATM Management
Interface (AMI).
NOTE:
If a switch is running in non-extended mode,
originating path 0 should always exist on
port 1 of each Series C network module for
multicast connection setups to succeed.
Multicast connection information for all of
the ports of Series C network modules is
stored in the space allocated for port 1 and
path 0 on each Series C network module.
originating path 0 should always exist on
port 1 of each Series C network module for
multicast connection setups to succeed.
Multicast connection information for all of
the ports of Series C network modules is
stored in the space allocated for port 1 and
path 0 on each Series C network module.