Hp Procurve Spanning Tree

Hp Procurve Spanning Tree

Spanning tree recalculates when you turn it on/off on a switch until all the switches vote and agree which switch is the 'root' switch. This process takes about 15-60 seconds during which the switch may temporarily block/unblock a port to determine if any loops exist. It should not affect a normal network. Procurve 4204vl-3# configure Procurve 4204vl-3(config)# spanning-tree Procurve 4204vl-3(config)# write memory. This post is part of a new series called Network Friday, where I explain a new networking concept every Friday and tell you have to configure it on (mostly) HP hardware.
BPDU protection is a security feature designed to protect the active STP topology by preventing spoofed BPDU packets from entering the STP domain. In a typical implementation, BPDU protection would be applied to edge ports connected to end user devices that do not run STP. If STP BPDU packets are received on a protected port, the feature will disable that port and alert the network manager via an SNMP trap as shown in BPDU protection enabled at the network edge.
BPDU protection enabled at the network edge
The following commands allow you to configure BPDU protection on VLANs for which the port is a member.
Syntax:[no] spanning-tree  bpdu-protection

Enables/disables the BPDU protection feature on a port.

Default: Disabled.
Syntax:

[no] spanning-tree  bpdu-protection-timeout 
Configures the duration of time when protected ports receiving unauthorized BPDUs will remain disabled. The default value of 0 (zero) sets an infinite timeout (that is, ports that are disabled by bpdu-protection are not, by default, re-enabled automatically).
Default: 0

Range: 0 - 65535 seconds
For an example of using this command, see Re-enabling a port blocked by BPDU protection.
Syntax:Enables/disables the sending of errant BPDU traps. How to download private video youtube.
CAUTION: This command should only be used to guard edge ports that are not expected to participate in STP operations. Once BPDU protection is enabled, it will disable the port as soon as any BPDU packet is received on that interface.
Syntax:show spanning-tree bpdu-protection  Iso windows server 2003 r2.

Enables/disables the BPDU protection feature on a port.
Default: Disabled.
Syntax:[no] spanning-tree  bpdu-protection-timeout 
Configures the duration of time when protected ports receiving unauthorized BPDUs will remain disabled. The default value of 0 (zero) sets an infinite timeout (that is, ports that are disabled by bpdu-protection are not, by default, re-enabled automatically).
Default: 0
Range: 0 - 65535 seconds
For an example of using this command, see Re-enabling a port blocked by BPDU protection.
Syntax:Enables/disables the sending of errant BPDU traps. How to download private video youtube.
CAUTION: This command should only be used to guard edge ports that are not expected to participate in STP operations. Once BPDU protection is enabled, it will disable the port as soon as any BPDU packet is received on that interface.
Syntax:show spanning-tree bpdu-protection  Iso windows server 2003 r2.
Displays a summary listing of ports with BPDU protection enabled. To display detailed per-port status information, enter the specific port number(s). BPDU protected ports are displayed as separate entries of the spanning tree category within the configuration file.
Displaying BPDU protection status for specific ports
Hp Procurve Spanning Tree Topology ChangePorts disabled by BPDU Protection remain disabled unless BPDU Protection is removed from the switch or by configuring a nonzero BPDU protection timeout. For example, if you want to re-enable protected ports 60 seconds after receiving a BPDU, you would use this command:
Hp Procurve Spanning-tree Admin-edge-portRelated Supplies, Accessories, & Products
more Product Information in pdf format 
Hp Procurve Firmwaresummary
The HP Procurve managed 24-port switch has 10/100BASE-TX autosensing per port and 2 open transceiver slots for media flexibility. The HP Procurve switch 2524 is ideal for low-cost, managed 10/100 connectivity with uplinks.
features
High performance switch design with non-blocking architecture features 9.6 Gbps switchfabric integrated on-chip
HP Auto-MDIX automatically adjusts for straight-through or crossover cables on all10/100 and 100/1000 ports
Stacking capability:Single IP address management for a virtual stack of up to 16 switches including the1600M, 2400M, 2424M, 2512, 2524, 4000M, and 8000M
RMON and extended RMON provide advanced monitoring capabilities
Web interface allows users to configure the switch from any Web browser on thenetwork
IEEE 802.3ad standard trunking allows redundant connections between devices to becombined for more aggregate bandwidth between devices supporting Link AggregationControl Protocol (LACP)
VLAN support and tagging supports up to 30 port-based VLANs and dynamicconfiguration of 802.1Q VLAN tagging, providing security between workgroups
Group VLAN Registration Protocol (GVRP) allows automatic learning of VLANs whicheliminates manual configuration of VLANs
IP multicast (IGMP) prevents flooding of IP multicast traffic
Port security secures network and users from tampering by unauthorized users.
Spanning Tree Protocol provides redundant links while preventing network loops.
IEEE 802.1p prioritization delivers data to devices based on the priority and type oftraffic
TACACS+ eases administration of switch management security by using a passwordauthentication server (visit our Web site for availability of this free software update)
802.1x and RADIUS network login controls access and provides authentication andaccountability for network security (visit our Web site for availability of this free softwareupdate)
key specifications
Ports24 RJ-45 10/100Base-TX ports (IEEE 802.3 Type 10Base-T; 802.3u Type 100Base-TX)
Two open transceiver slots, one RS-232C DB-9 download port
MemoryPacket buffer size: 6MB shared packet buffers 
RAM/ROM capacity: 26MB
ProcessorProcessor type and speed: ARM7TDMI at 62.5 MHz Flash capacity: 2MB
MountingMounts in a standard 19 inch rack (hardware included)
PerformanceLatency: <10µs (LIFO) 
Throughput: 6.6 million pps (64-byte packets) 
Switch fabric speed: 9.6Gbps
Address table size: 4,096 entries
Electrical CharacteristicsHeat dissipation/hour: 123 BTU/hr 
Maximum wattage: 360W 
Voltage: 100–127VAC/200–240VAC 
Current: 2.4 A max/1.2 A max 
Frequency: 50/60Hz
CommunicationsIEEE 802.3x Flow Control
SafetyEN 60950/IEC 950
UL 1950
CSA 950 
Complies with NOM-019-SCFI-1994
EmissionsFCC Class A
 EN 55022/CISPR-22 Class A
VCCI Class A
ImmunityGeneric: EN 50082-1
ESD: IEC/EN 61000-4-2; 4 kV CD, 8 kV AD 
Radiated: IEC/EN 61000-4-3; 3 V/m
EFT/Burst: IEC/EN 61000-4-4; 1.0 kV (power line), 0.5 kV (signal line)
EnvironmentOperatingTemperature: 0°C to 55°C (32°F to 131°F) 
Relative humidity: 15 to 95% to 40°C (140°F), noncondensing
Non-operating/storageTemperature: -40°C to 70°C (-40°F to 158°F) 
Relative humidity: 90% at 65°C (149°F), noncondensing
Shock and Vibration: HP759, HP760 (similar to EN 60068 IEC 68)
WarrantyLifetime warranty as long as the customer owns the product, with next-business day advance replacement
Physical CharacteristicsDimensions: 17.4in x 8.0in x 1.8in (44.2cm x 20.3cm x 4.6cm)
Weight: 6.0lb (2.7kg)
All brand and product names are trademarks of their respective companies. Technical information in this document is subject to change without notice. 