66
C
HAPTER
4: V
IRTUAL
LAN
S
(VLAN
S
)
Types of VLANs
The switch supports a maximum of 256 VLANs. VLANs can be created
according to the following criteria:
■
Physical port
■
802.1Q tag
■
Ethernet, LLC SAP, or LLC/SNAP Ethernet protocol type
■
A combination of these criteria
Port-Based VLANs
In a port-based VLAN, a VLAN name is given to a group of one or more
ports on the switch. A port can be a member of only one port-based
VLAN.
config igmp snooping timer
<router_timeout> <host_timeout>
Configures the IGMP snooping timers. Timers
should be set to approximately 2.5 times the
router query interval in use on the network.
Specify the following:
■
router_timeout
— The interval, in
seconds, between the last time the router was
discovered and the current time. The range is
10 to 2,147,483,647 seconds (68 years). The
default setting is 260 seconds.
■
host_timeout
— The interval, in seconds,
between the last IGMP group report message
from the host and the current time. The range
is 10 to 2,147,483,647 seconds (68 years). The
default setting is 260 seconds.
show igmp snooping {<vlan <name>}
Displays IGMP snooping registration information,
and a summary of all IGMP timers and states.
disable igmp {vlan <name>}
Disables IGMP processing. No IGMP query is
generated, but the switch continues to respond to
IGMP queries received from other devices. If no
VLAN is specified, IGMP is disabled on all
interfaces.
disable igmp snooping
Disables IGMP snooping. IGMP snooping can be
disabled only if IP multicast routing is not being
used. Disabling IGMP snooping allows all IGMP
and IP multicast traffic to flood within a given
VLAN.
clear igmp snooping {vlan <name>}
Removes one or all IGMP snooping entries.
Table 18
IGMP Configuration Commands (continued)
Command
Description
Содержание 3C17705
Страница 1: ... http www 3com com SuperStack II Switch 9100 User Guide Part No DUA1770 5AAA01 Published January 2000 ...
Страница 10: ...GLOSSARY INDEX INDEX OF COMMANDS 3COM CORPORATION LIMITED WARRANTY EMC STATEMENTS ...
Страница 14: ...14 ABOUT THIS GUIDE ...
Страница 32: ...32 CHAPTER 2 INSTALLATION AND SETUP ...
Страница 62: ...62 CHAPTER 3 ACCESSING THE SWITCH ...
Страница 80: ...80 CHAPTER 4 VIRTUAL LANS VLANS ...
Страница 86: ...86 CHAPTER 5 FORWARDING DATABASE FDB ...
Страница 98: ...98 CHAPTER 6 SPANNING TREE PROTOCOL STP ...
Страница 110: ...110 CHAPTER 7 QUALITY OF SERVICE QOS ...
Страница 124: ...124 CHAPTER 8 STATUS MONITORING AND STATISTICS ...
Страница 130: ...130 CHAPTER 9 USING THE WEB INTERFACE ...
Страница 136: ...136 CHAPTER 10 SOFTWARE UPGRADE AND BOOT OPTIONS ...
Страница 156: ...156 APPENDIX C TROUBLESHOOTING ...
Страница 162: ......
Страница 176: ...176 INDEX ...
Страница 180: ...180 INDEX OF COMMANDS ...