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C
ONFIGURING
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WITCH
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Web
– Click MVR, Group Member Configuration. Select a port or trunk
from the “Interface” field, and click Query to display the assigned
multicast groups. Select a multicast address from the displayed lists, and
click the Add or Remove button to modify the Member list.
Figure 3-105. MVR Group Member Configuration
CLI
– This example statically assigns a multicast group to a receiver port.
DHCP Snooping
DHCP snooping allows a switch to protect a network from rogue DHCP
servers or other devices which send port-related information to a DHCP
server. This information can be useful in tracking an IP address back to a
physical port.
Network traffic may be disrupted when malicious DHCP messages are
received from an outside source. DHCP snooping is used to filter DHCP
messages received on a non-secure interface from outside the network or
firewall. When DHCP snooping is enabled globally and enabled on a
VLAN interface, DHCP messages received on an untrusted interface from
a device not listed in the DHCP snooping table will be dropped.
Console(config)#interface ethernet 1/2
Console(config-if)#mvr group 228.1.23.1
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Console(config-if)#
Содержание 6128L2
Страница 2: ......
Страница 21: ...CONTENTS xvii Glossary Index ...
Страница 22: ...CONTENTS xviii ...
Страница 26: ...TABLES xxii ...
Страница 40: ...INTRODUCTION 1 10 ...
Страница 54: ...INITIAL CONFIGURATION 2 14 ...
Страница 193: ...PORT CONFIGURATION 3 139 Figure 3 61 Displaying Etherlike and RMON Statistics ...
Страница 257: ...QUALITY OF SERVICE 3 203 Figure 3 90 Configuring Policy Maps ...
Страница 313: ...COMMAND GROUPS 4 13 PE Privileged Exec VC VLAN Database Configuration ...
Страница 592: ...TROUBLESHOOTING B 4 ...
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