Availability And Redundancy Features - Cisco 3020 - Catalyst Blade Switch Configuration Manual

Features
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For additional descriptions of the management interfaces, see the
Note
Switch" section on page

Availability and Redundancy Features

These are the availability and redundancy features:
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Cisco Catalyst Blade Switch 3020 for HP Software Configuration Guide
1-4
Cisco Discovery Protocol (CDP) Versions 1 and 2 for network topology discovery and mapping
between the switch and other Cisco devices on the network
Network Time Protocol (NTP) for providing a consistent time stamp to all switches from an external
source
Cisco IOS File System (IFS) for providing a single interface to all file systems that the switch uses
Configuration logging to log and to view changes to the switch configuration
Unique device identifier to provide product identification information through a show inventory
user EXEC command display
In-band management access through the device manager over a Netscape Navigator or Microsoft
Internet Explorer browser session
In-band management access for up to 16 simultaneous Telnet connections for multiple CLI-based
sessions over the network
In-band management access for up to five simultaneous, encrypted Secure Shell (SSH) connections
for multiple CLI-based sessions over the network (requires the cryptographic version of the
software)
In-band management access through SNMP Versions 1, 2c, and 3 get and set requests
Out-of-band management access through the switch console port to a directly attached terminal or
to a remote terminal through a serial connection or a modem
The internal Ethernet interface fa0, a Layer 3 interface that you can communicate with only through
the HP Onboard Administrator
1-10.
UniDirectional Link Detection (UDLD) and aggressive UDLD for detecting and disabling
unidirectional links on fiber-optic interfaces caused by incorrect fiber-optic wiring or port faults
IEEE 802.1D Spanning Tree Protocol (STP) for redundant backbone connections and loop-free
networks. STP has these features:
Up to 128 spanning-tree instances supported
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Per-VLAN spanning-tree plus (PVST+) for load balancing across VLANs
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Rapid PVST+ for load balancing across VLANs and providing rapid convergence of
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spanning-tree instances
UplinkFast and BackboneFast for fast convergence after a spanning-tree topology change and
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for achieving load balancing between redundant uplinks, including Gigabit uplinks
IEEE 802.1s Multiple Spanning Tree Protocol (MSTP) for grouping VLANs into a spanning-tree
instance and for providing multiple forwarding paths for data traffic and load balancing and rapid
per-VLAN Spanning-Tree plus (rapid-PVST+) based on the IEEE 802.1w Rapid Spanning Tree
Protocol (RSTP) for rapid convergence of the spanning tree by immediately changing root and
designated ports to the forwarding state
Chapter 1
"Design Concepts for Using the
Overview
OL-8915-01