Web Management Guide-R02
Table Of Contents
- How to Use This Guide
- Contents
- Figures
- Tables
- Getting Started
- Web Configuration
- Using the Web Interface
- Basic Management Tasks
- Displaying System Information
- Displaying Hardware/Software Versions
- Configuring Support for Jumbo Frames
- Displaying Bridge Extension Capabilities
- Managing System Files
- Setting the System Clock
- Configuring the Console Port
- Configuring Telnet Settings
- Displaying CPU Utilization
- Configuring CPU Guard
- Displaying Memory Utilization
- Resetting the System
- Interface Configuration
- VLAN Configuration
- Address Table Settings
- Spanning Tree Algorithm
- Congestion Control
- Class of Service
- Quality of Service
- VoIP Traffic Configuration
- Security Measures
- AAA (Authentication, Authorization and Accounting)
- Configuring User Accounts
- Web Authentication
- Network Access (MAC Address Authentication)
- Configuring HTTPS
- Configuring the Secure Shell
- Access Control Lists
- Filtering IP Addresses for Management Access
- Configuring Port Security
- Configuring 802.1X Port Authentication
- DoS Protection
- DHCP Snooping
- DHCPv6 Snooping
- ND Snooping
- IPv4 Source Guard
- IPv6 Source Guard
- ARP Inspection
- Application Filter
- Basic Administration Protocols
- Configuring Event Logging
- Link Layer Discovery Protocol
- Simple Network Management Protocol
- Configuring Global Settings for SNMP
- Setting Community Access Strings
- Setting the Local Engine ID
- Specifying a Remote Engine ID
- Setting SNMPv3 Views
- Configuring SNMPv3 Groups
- Configuring Local SNMPv3 Users
- Configuring Remote SNMPv3 Users
- Specifying Trap Managers
- Creating SNMP Notification Logs
- Showing SNMP Statistics
- Remote Monitoring
- Setting a Time Range
- Ethernet Ring Protection Switching
- MLAG Configuration
- OAM Configuration
- LBD Configuration
- Multicast Filtering
- Overview
- Layer 2 IGMP (Snooping and Query for IPv4)
- Configuring IGMP Snooping and Query Parameters
- Specifying Static Interfaces for a Multicast Router
- Assigning Interfaces to Multicast Services
- Setting IGMP Snooping Status per Interface
- Filtering IGMP Packets on an Interface
- Displaying Multicast Groups Discovered by IGMP Snooping
- Displaying IGMP Snooping Statistics
- Filtering and Throttling IGMP Groups
- MLD Snooping (Snooping and Query for IPv6)
- Configuring MLD Snooping and Query Parameters
- Setting Immediate Leave Status for MLD Snooping per Interface
- Specifying Static Interfaces for an IPv6 Multicast Router
- Assigning Interfaces to IPv6 Multicast Services
- Filtering MLD Query Packets on an Interface
- Showing MLD Snooping Groups and Source List
- Displaying MLD Snooping Statistics
- Filtering and Throttling MLD Groups
- Multicast VLAN Registration for IPv4
- IP Tools
- IP Configuration
- General IP Routing
- IP Services
- Appendices
Chapter 7
| Spanning Tree Algorithm
Configuring Global Settings for STA
– 215 –
◆ BPDU Flooding – Configures how the system floods BPDUs to other ports
when spanning tree is disabled globally on the switch or disabled on specific
ports.
■
To VLAN: Floods BPDUs to all other spanning tree-disabled ports within the
receiving port’s native VLAN (i.e., as determined by port’s PVID).
This is the default.
■
To All: Floods BPDUs to all other spanning tree-disabled ports on the
switch.
The setting has no effect if BPDU flooding is disabled on a port (see
"Configuring Interface Settings for STA").
◆ Cisco Prestandard Status – Configures spanning tree operation to be
compatible with Cisco prestandard versions. (Default: Disabled)
Cisco prestandard versions prior to Cisco IOS Release 12.2(25)SEC do not fully
follow the IEEE standard, causing some state machine procedures to function
incorrectly. This command forces the spanning tree protocol to function in a
manner compatible with Cisco prestandard versions.
Advanced Configuration Settings
The following attributes are based on RSTP, but also apply to STP since the switch
uses a backwards-compatible subset of RSTP to implement STP, and also apply to
MSTP which is based on RSTP according to the standard:
◆ Path Cost Method – The path cost is used to determine the best path between
devices. The path cost method is used to determine the range of values that
can be assigned to each interface.
■
Long: Specifies 32-bit based values that range from 1-200,000,000.
(Thisisthedefault.)
■
Short: Specifies 16-bit based values that range from 1-65535.
◆ Transmission Limit – The maximum number of BPDU transmissions permitted
within the Hello Time interval. (Range: 1-10; Default: 3)
When the Switch Becomes Root
◆ Hello Time – Interval (in seconds) at which the root device transmits a
configuration message.
■
Default: 2
■
Minimum: 1
■
Maximum: The lower of 10 or [(Max. Message Age / 2) -1]
◆ Maximum Age – The maximum time (in seconds) a device can wait without
receiving a configuration message before attempting to reconverge. All device
ports (except for designated ports) should receive configuration messages at
regular intervals. Any port that ages out STA information (provided in the last
configuration message) becomes the designated port for the attached LAN. If it