Cisco Systems BC-23 manual Establishing Multiple Spanning-Tree Domains, BC-44

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Configuring Transparent Bridging

Transparent and SRT Bridging Configuration Task List

To reduce the amount of bandwidth that LAT traffic consumes on serial interfaces, you can specify a LAT-specific form of compression. Doing so applies compression to LAT frames being sent out by the Cisco IOS software through the interface in question. To configure LAT compression, use the following command in interface configuration mode:

Command

Purpose

 

 

bridge-group bridge-grouplat-compression

Reduces the amount of bandwidth that LAT traffic consumes on a

 

serial interface.

 

 

LAT compression can be specified only for serial interfaces. For the most common LAT operations (user keystrokes and acknowledgment packets), LAT compression reduces LAT’s bandwidth requirements by nearly a factor of two.

Establishing Multiple Spanning-Tree Domains

The Cisco IEEE 802.1D bridging software supports spanning-tree domains of bridge groups. Domains are a feature specific to Cisco. This feature is only available if you have specified IEEE as the Spanning-Tree Protocol. A domain establishes an external identification of the BPDUs sent from a bridge group. The purpose of this identification is as follows:

•Bridge groups defined within the domain can recognize that BPDU as belonging to them.

•Two bridged subnetworks in different domains that are sharing a common connection can use the domain identifier to identify and then ignore the BPDUs that belong to another domain. Each bridged subnetwork establishes its own spanning tree based on the BPDUs that it receives. The BPDUs it receives must contain the domain number to which the bridged subnetwork belongs. Bridged traffic is not domain identified.

Note Domains do not constrain the propagation of bridged traffic. A bridge bridges nonrouted traffic received on its interfaces regardless of domain.

You can place any number of routers or bridges within the domain. Only the devices within a domain share spanning-tree information.

When multiple routers share the same cable and you want to use only certain discrete subsets of those routers to share spanning-tree information with each other, establish spanning-tree domains. This function is most useful when running other applications, such as IP User Datagram Protocol (UDP) flooding, that use the IEEE spanning tree. You also can use this feature to reduce the number of global reconfigurations in large bridged networks.

To establish multiple spanning-tree domains, use the following command in global configuration mode:

Command

Purpose

 

 

bridge bridge-group domain domain-number

Establishes a multiple spanning-tree domain.

 

 

For an example of how to configure domains, see the “Complex Transparent Bridging Network Topology Example” section later in this chapter.

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-44

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Contents Transparent and SRT Bridging BC-23Integrated Routing and Bridging Transparent Bridging FeaturesBC-24 Bridge-Group Virtual Interface BC-25BC-26 Bridge-Group Virtual Interface in the RouterOther Considerations SRT Bridging FeaturesBC-27 Transparent and SRT Bridging Configuration Task List BC-28As Ieee 802.1D standard, DEC or Vlan bridge Configuring Transparent Bridging and SRT BridgingAssigning Each Network Interface to a Bridge Group BC-29Choosing the OUI for Ethernet Type II Frames Command PurposeTransparently Bridged VLANs for ISL BC-30BC-31 Transparently Bridged VLANs on an Fddi BackboneRouting between ISL VLANs BC-32Same bridge group Specifies a subinterfaceSubinterface with the Vlan BC-33Configuring Fast-Switched Transparent Bridging over ATM Configuring a Subscriber Bridge GroupConfiguring Transparent Bridging over WANs BC-34Defining the Protocols to Bridge Configuring Transparent Bridging over DDRCommand Specifying the Bridging ProtocolConfiguring an Interface for Bridging Configuring Transparent Bridging over Frame RelayDetermining Access for Bridging Fast-Switched Transparent BridgingBridging in a Frame Relay Network with Multicasts Configuring Transparent Bridging over Multiprotocol LapbBridging in a Frame Relay Network with No Multicasts BC-37Specifies IP-to-X.121 mapping Configuring Transparent Bridging over SmdsConfiguring Transparent Bridging over BC-38Specifies a protocol to be routed on a bridge group Configuring Concurrent Routing and BridgingConfiguring Integrated Routing and Bridging BC-39Enabling Integrated Routing and Bridging Configuring InterfacesConfiguring the Bridge-Group Virtual Interface BC-40Configuring Protocols for Routing or Bridging BC-41Disabling IP Routing Configuring Transparent Bridging OptionsBC-42 Enabling Autonomous Bridging Configuring LAT CompressionBC-43 Establishes a multiple spanning-tree domain Establishing Multiple Spanning-Tree DomainsBC-44 Forwarding Multicast Addresses Configuring Bridge Table Aging TimeFiltering Transparently Bridged Packets BC-45Setting Filters at the MAC Layer BC-46Ethernet-ordered MAC address Filters particular MAC-layer station addressesFiltering by Vendor Code BC-47Type Filtering by Protocol TypeBC-48 Interface Defining and Applying Extended Access ListsConfiguration mode BC-49BC-50 Enabling LAT Group Code Service Filtering Filtering LAT Service AnnouncementsBC-51 Adjusting Spanning-Tree Parameters BC-52Adjusting Bpdu Intervals Setting the Bridge PrioritySetting an Interface Priority Assigning Path CostsDisabling the Spanning Tree on an Interface Adjusting the Interval between Hello BPDUsDefining the Forward Delay Interval Defining the Maximum Idle IntervalBC-55 Configuring the PA-12E/2FE Port Adapter BC-56Monitoring and Maintaining the PA-12E/2FE Port Adapter BC-57BC-58 BC-59 Configuring Circuit Groups BC-60Distributes base load on the source MAC address only Configuring Constrained Multicast FloodingConfigures a transmission pause interval BC-61BC-62 Basic Bridging Example BC-63Concurrent Routing and Bridging Example BC-64Basic Integrated Routing and Bridging Example BC-65Complex Integrated Routing and Bridging Example BC-66Transparently Bridged VLANs Configuration Example BC-67Router Two Router OneBC-68 Router Three BC-69Ethernet-to-FDDI Transparent Bridging Example Routing between VLANs Configuration ExampleBC-70 Router/Bridge in Building Ethernet Bridging ExampleBC-71 SRT Bridging Example BC-72Multicast or Broadcast Packets Bridging Example Configuration for the New York City RouterConfiguration for the Thule, Greenland Router BC-73Transparent Bridging Example Configuration for BridgeBC-74 Bridging in a Frame Relay Network with No Multicasts Frame Relay Transparent Bridging ExamplesBC-75 Bridging in a Frame Relay Network with Multicasts Transparent Bridging over Multiprotocol Lapb ExampleBC-76 Transparent Bridging over DDR Examples BC-77Complex Transparent Bridging Network Topology Example Fast-Switched Transparent Bridging over Smds ExampleBC-78 BC-79 Bridged Subnetworks with DomainsConfiguration for Router a BC-80Configuration for Router D Configuration for Router BConfiguration for Router C BC-81ATM Subscriber Ports, ATM Trunk Example Fast Ethernet Subscriber Port, Frame Relay Trunk ExampleBC-82 BC-83 Configuration of IRB for PA-12E/2FE Port Adapter Example BC-84

BC-23 specifications

Cisco Systems has long been a leader in the networking industry, and its BC-23 model exemplifies the company's commitment to innovation and performance. Aimed at enhancing business operations, the BC-23 is tailored for organizations looking for robust solutions that support their digital transformation efforts.

One of the standout features of the Cisco BC-23 is its advanced networking capabilities. It supports high-speed data transmission, enabling seamless communication across networks. With multi-gigabit Ethernet ports, the BC-23 facilitates faster data rates, accommodating the increasing bandwidth demands of modern applications. This feature is particularly beneficial for businesses that rely heavily on cloud services, video conferencing, and data-heavy applications.

Security is a top priority, and the Cisco BC-23 incorporates cutting-edge security measures. Integrated threat detection and prevention systems help safeguard sensitive data from cyber threats. Additionally, the device supports secure access protocols, ensuring that only authorized users can connect to the network. This multi-layered security approach not only protects the network infrastructure but also secures the integrity of the data being transmitted.

Another significant characteristic of the BC-23 is its support for software-defined networking (SDN). This technology allows businesses to manage their networks through centralized software applications, facilitating real-time adjustments and optimizations. The flexibility afforded by SDN is especially advantageous in dynamic environments where network demands can shift rapidly.

The Cisco BC-23 also offers enhanced management features, allowing IT teams to monitor network performance and analytics effectively. This visibility into network operations enables organizations to identify potential issues before they escalate, minimizing downtime and keeping business processes smooth.

Furthermore, the BC-23 is designed for scalability. As organizations grow, their networking needs evolve, and the BC-23 can easily adapt to these changes. Businesses can add additional devices and capabilities without the need for a complete overhaul of their existing infrastructure.

With its combination of speed, security, and scalability, the Cisco Systems BC-23 is an invaluable asset for modern businesses. It stands out not just as a networking device but as a comprehensive solution that meets the demands of today's fast-paced, technology-driven environment. As companies continue to leverage digital tools for growth and efficiency, the BC-23 will undoubtedly play a significant role in their success.
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