Cisco 2950SX 24 - Catalyst Switch - Stackable Bedienungsanleitung PDF herunterladen (Seite 2)

2 Cisco Product Catalog, June, 2002

• Redundant stacking connections provide support for a redundant loopback connection for top and bottom switches in an

independent stack backplane cascaded conﬁguration.

• Command switch redundancy enabled in the Cisco Cluster Management Suite (CMS) Software allows customers to

designate a backup command switch that takes over cluster management functions if the primary command switch fails.

• Provides unidirectional link detection (UDLD) for detecting and disabling unidirectional links on ﬁber-optic interfaces

caused by incorrect ﬁber-optic wiring or port faults.

Integrated Cisco IOS Features for Bandwidth Optimization

• Bandwidth aggregation up to 4 Gbps through Gigabit EtherChannel® technology enhances fault tolerance and offers

higher-speed aggregated bandwidth between switches, to routers and individual servers.

• Per-port broadcast, multicast, and unicast storm control prevents faulty end stations from degrading overall systems

performance.

• Per virtual LAN (VLAN) Spanning Tree Plus (PVST+) allows for Layer 2 load sharing on redundant links to efﬁciently

utilize the extra capacity inherent in a redundant design.

• Virtual Trunking Protocol (VTP) pruning limits bandwidth consumption on VTP trunks by ﬂooding broadcast trafﬁc only

on trunk links required to reach the destination devices.

• Internet Group Management Protocol (IGMP) snooping provides for fast client joins and leaves of multicast streams and

limits bandwidth-intensive video trafﬁc to only the requestors.

• Multicast VLAN registration (MVR) continuously sends multicast streams in a multicast VLAN while isolating the

streams from subscriber VLANs for bandwidth and security reasons.

Security

Network-Wide Security Features

• Filtering of incoming trafﬁc ﬂows based on Layer 2, Layer 3 or Layer 4 access control parameters (ACPs) prevents

unauthorized data ﬂows. Up to four ACPs are supported in conﬁguring either QoS or security ﬁlters.

• The following Layer 2 ACPs or a combination can be used for security classiﬁcation of incoming packets: source Media

Access Control (MAC) address, destination MAC address, and 16-bit Ethertype.

• The following Layer 3 and Layer 4 ﬁelds or a combination can be used for security classiﬁcation of incoming packets:

source IP address, destination IP address, TCP source or destination port number, User Datagram Protocol (UDP) source,

or destination port number.

• A private VLAN edge provides security and isolation between ports on a switch, ensuring that voice trafﬁc travels directly

from its entry point to the aggregation device through a virtual path and cannot be directed to a different port.

• Support for the 802.1x standard allows users to be authenticated regardless of which LAN port they are accessing, and

provides unique beneﬁts to customers who have a large base of mobile (wireless) users accessing the network.

• Support for "secure ports" that prevents unauthorized stations from accessing the switch by restricting the number of

MAC addresses allowed to access the port. Up to 132 addresses can be conﬁgured per port.

• The user-selectable address-learning mode simpliﬁes conﬁguration and enhances security.

• Spanning-tree root guard (STRG) prevents edge devices not in the network administrator’s control from becoming

Spanning-Tree Protocol root nodes.

• The Spanning-Tree Protocol Port Fast/bridge protocol data unit (BPDU) guard feature disables access ports with

Spanning-Tree Protocol PortFast-enabled upon reception of a BPDU, and increases network reliability, manageability,

and security.

• Multilevel security on console access prevents unauthorized users from altering the switch conﬁguration.

• Support for TACACS+ authentication enables centralized control of the switch and restricts unauthorized users from

altering the conﬁguration.

1 2 3 4 5 6 7 8

Kommentare zu diesen Handbüchern

Keine Kommentare

Cisco 2950SX 24 - Catalyst Switch - Stackable Bedienungsanleitung Seite 2

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Vernetzung Cisco 2950SX 24 - Catalyst Switch - Stackable