Cisco S49MESK9-12246SG= Manual Do Utilizador
Product Bulletin
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information.
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Customer benefits:
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Simplified backup mechanism
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Fast redundancy/convergence
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No need to run spanning tree
E-OAM 802.3ah and CFM: 802.1ag:
CFM and 802.3ah define a set of fault and performance management features essential for service
providers to perform effective operation, administration, and maintenance (OAM) operations. CFM
is an end-to-end per-service-instance Ethernet layer OAM protocol. It includes proactive
connectivity monitoring, fault verification, and fault isolation. The following CFM features are
supported in this release:
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CFM 3.0
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Outward-facing Maintenance End Point (MEP)
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CFM MIB
IEEE 802.3ah is a link layer OAM at the provider edge and is used across a physical IEEE 802.3
medium between a provider and a customer, between two provider ports, or even potentially
between two customer ports. 802.3ah performs link monitoring and loopbacks.
Management port:
This feature enables the out of band management port on the front of the Cisco Catalyst 4948
switches and the rear of the Cisco Catalyst 4900M switch. The management port (interface
fastethernet 1) is for management purposes only and cannot pass traffic to any other port in the
system. Network administrators can now create an out of band management network to monitor
and deploy switches throughout the data center.
Platform: Supported on Cisco Catalyst 49xx and 4900M switches only.
EOT:
Object tracking is a mechanism to track one object and take an action on another object when
there is “no relationship” between the objects. EOT support will allow switches utilizing Hot
Standby Router Protocol (HSRP) to track IP service-level agreement (SLA) measurements and
trigger hot standby failover based upon jitter, packet loss, or latency. Moreover, the EOT feature
separates the tracking mechanism from HSRP and creates a separate standalone tracking
process that can be used by any other process as well as HSRP. EOT takes high availability to the
next level, whereby availability is defined based on the experience that the traffic received through
a given interface. EOT is primarily useful in the campus distribution and in data center access.
The following EOT clients are supported: HSRP, Virtual Router Redundancy Protocol (VRRP),
Gateway Load Balancing Protocol (GLBP), IP SLA and static routes.
LLDP for LLDP-MED location identification TLV support:
While Release 12.2(44)SG supports LLDP and LLDP-MED, Release 12.2(46)SG introduces a
location-based TLV. LLDP-MED is an extension to LLDP that operates between endpoint devices
such as IP phones and network devices such as switches. It specifically provides support for voice
over IP (VoIP) applications and provides additional TLVs for capabilities discovery, network policy,
Power over Ethernet, and inventory management.