减少了二层网络中的广播报文,节约带宽
增强了组播信息的安全性
为实现每台用户主机的单独计费提供了方便
IGMP会消耗二层叫混迹的大量的CPU,不推荐使用
第1题:
A.IGMP Snooping解决组播报文在三层广播的问题
B.IGMP Snooping运行在链路层,是二层以太网交换机上的组播约束机制,用于管理和控制组播组
C.IGMP Snooping通过在监听主机发出的IGMP报文,建立MAC组播地址表
D.IGMP Snooping不会消耗交换机的CPU
第2题:
在分布式IGMP组播模式下,ONU的工作模式为?
第3题:
在一个只有二层交换机构成的局域网中,如果在交换机上只启用IGMP Snooping,那么()
第4题:
IGMP Snooping 不能在三层交换机上使用。
第5题:
下述关于RG200O-CA 6828的IGMP Snooping功能,描述错误的是:()
第6题:
S8505支持的igmp snooping与igmp proxy有什么区别?
第7题:
EPFC单板提供4路EPON光接口支持IGMP SNOOPINg,每个PON支持()个组播组。
第8题:
Which two statements are true about Internet Group Management Protocol (IGMP) snooping?()
第9题:
如果主机发出IGMP离开报文时,交换机将改主机加入到相应的组播表中
如果主机发出的IGMP主机报告报文时,交换机将删除与该主机对应的组播表项
二层交换机通过不断监听IGMP报文,交换机在二层建立和维护MAC广播地址表
没有运行IGMP Snooping时,组播报文将在二层广播,运行IGMP Snooping后,报文将不再二层广播,而是进行二层组播
第10题:
IGMP Snooping解决组播报文在三层广播的问题
IGMP Snooping运行在链路层,是二层以太网交换机上的组播约束机制,用于管理和控制组播组
IGMP Snooping通过在监听主机发出的IGMP报文,建立MAC组播地址表
IGMP Snooping不会消耗交换机的CPU
第11题:
物理层
网络层
链路层
应用层
第12题:
Enable the IGMP snooping capability and define the IGMP timeout period.
Set the Ethernet multicast mode to Enabled, enable the IGMP snooping capability, and define the IGMP timeout period.
Set the multicast monitor function to Enabled, enable the IGMP snooping capability, and define the mandatory data rate to the minimum value supported.
Set the Ethernet multicast mode to Multicast and define the multicast group address.
第13题:
A.减少了二层网络中的广播报文,节约带宽
B.增强了组播信息的安全性
C.为实现每台用户主机的单独计费提供了方便
D.IGMP会消耗二层叫混迹的大量的CPU,不推荐使用
第14题:
Nexus# sh ip igmp snooping vlan 120 IGMP Snooping information for vlan 120 IGMP snooping disabled Optimised Multicast Flood (OMF) disabled IGMP querier none Switch-querier enabled, address 1.1.1.1, currently not running IGMPv3 Explicit tracking enabled IGMPv2 Fast leave disabled IGMPv1/v2 Report suppression enabled IGMPv3 Report suppression disabled Link Local Groups suppression enabled Router port detection using PIM Hellos, IGMP Queries Number of router-ports: 0 Number of groups: 0 Active ports: Po100 Po111 Which statement best describes what is depicted in the show command output?()
第15题:
以下关于组播VLAN的表述,正确的是()。
第16题:
关于IGMP-Snooping工作原理,正确的是()。
第17题:
7360 OLT ihub支持IGMP Snooping
第18题:
Snooping(侦听)模式:OLT设备透传转发所有的合法IGMP报文。当用户数比较多时在汇聚网络上会产生大量IGMP报文不建议用Proxy(代理)模式。
第19题:
Which statement best describes what is depicted in the show command output?()
第20题:
IGMP Snooping运行在()层。
第21题:
IGMP snooping is not active for VLAN 120 because the IGMP feature has not been enabled on the switch with the feature igmp command.
The IGMP snooping querier for VLAN 120 is not in a running state because the Loopback interface configured with 1.1.1.1/32 is currently in a down state.
IGMP snooping has been disabled on the VLAN 120 SVI.
IGMP snooping has been disabled for VLAN 120 in VLAN configuration mode.
IGMP snooping is not active for VLAN 120 because VLAN 120 does not exist in the VLAN database.
第22题:
IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.
IGMP snooping a nd Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.
IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IG MP message toward the router.
IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.
IGMP snooping is enabled with the ip multicast - routing global configuration command.
第23题:
IGMP snooping is not active for VLAN 120 because the IGMP feature has not been enabled on the switch with the feature igmp command.
The IGMP snooping querier for VLAN 120 is not in a running state because the Loopback interface configured with 1.1.1.1/32 is currently in a down state.
IGMP snooping has been disabled on the VLAN 120 SVI.
IGMP snooping has been disabled for VLAN 120 in VLAN configuration mode.
IGMP snooping is not active for VLAN 120 because VLAN 120 does not exist in the VLAN database.