
Chapter 1 Introducing the IES-1248-51V
IES-1248-51V User’s Guide
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Downstream Broadcast
The IES-1248-51V can block downstream broadcast packets from being sent to
specified VLANs on specified ports.
Management
• Remote configuration backup/restore and firmware upgrade
•SNMP manageable
• Text-based management locally via console port and remotely via telnet
• Editable plain text based configuration file
Security
• Password protection for system management
•VLAN
MAC (Media Access Control) Filter
Use the MAC filter to accept or deny incoming frames based on MAC (Media Access
Control) address(es) that you specify. You may enable/disable the MAC filter on
specific ports. You may specify up to ten MAC addresses per port.
MAC (Media Access Control) Count Filter
You can limit the number of MAC addresses that may be dynamically learned on a
port. You may enable/disable the MAC count filter on individual ports.
Static Multicast
Use static multicast to allow incoming frames based on multicast MAC address(es)
that you specify. This feature can be used in conjunction with IGMP snooping and
IGMP proxy to allow multicast MAC address(es) that are not learned by IGMP
snooping or IGMP proxy.
IGMP Proxy
In a simple tree network, the system can proxy multicast traffic in order to
improve network performance.
IGMP Snooping
With IGMP snooping, group multicast traffic is only forwarded to ports that are
members of that group. IGMP Snooping generates no additional network traffic,
allowing you to significantly reduce multicast traffic passing through your IES-
1248-51V.
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