Cisco Systems BC-23 manual Configuring Concurrent Routing and Bridging, BC-39

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Configuring Transparent Bridging

Transparent and SRT Bridging Configuration Task List

Configuring Concurrent Routing and Bridging

You can configure the Cisco IOS software to route a given protocol among one group of interfaces and concurrently bridge that protocol among a separate group of interfaces, all within one router. The given protocol is not switched between the two groups. Rather, routed traffic is confined to the routed interfaces and bridged traffic is confined to the bridged interfaces. A protocol may be either routed or bridged on a given interface, but not both.

The concurrent routing and bridging capability is, by default, disabled. While concurrent routing and bridging is disabled, the Cisco IOS software absorbs and discards bridgeable packets in protocols that are configured for routing on any interface in the router.

When concurrent routing and bridging is first enabled in the presence of existing bridge groups, it will generate a bridge route configuration command for any protocol for which any interface in the bridge group is configured for routing. This is a precaution that applies only when concurrent routing and bridging is not already enabled, bridge groups exist, and the bridge crb command is encountered.

To enable concurrent routing and bridging in the Cisco IOS software, use the following command in global configuration mode:

Command

bridge crb

Purpose

Enables concurrent routing and bridging.

Information about which protocols are routed and which are bridged is stored in a table, which can be displayed with the show interfaces crb privileged EXEC command.

When concurrent routing and bridging has been enabled, you must configure an explicit bridge route command for any protocol that is to be routed on the interfaces in a bridge group in addition to any required protocol-specific interface configuration.

To configure specific protocols to be routed in a bridge group, use the following command in interface configuration mode:

Command

Purpose

 

 

bridge bridge-group route protocol

Specifies a protocol to be routed on a bridge group.

 

 

Configuring Integrated Routing and Bridging

Perform one or more of the following tasks to configure integrated routing and bridging on your router:

•Assigning a Bridge Group Number and Defining the Spanning-Tree Protocol

•Configuring Interfaces

•Enabling Integrated Routing and Bridging

•Configuring the Bridge-Group Virtual Interface

•Configuring Protocols for Routing or Bridging

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-39

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Contents BC-23 Transparent and SRT BridgingBC-24 Transparent Bridging FeaturesIntegrated Routing and Bridging BC-25 Bridge-Group Virtual InterfaceBridge-Group Virtual Interface in the Router BC-26BC-27 SRT Bridging FeaturesOther Considerations BC-28 Transparent and SRT Bridging Configuration Task ListAssigning Each Network Interface to a Bridge Group Configuring Transparent Bridging and SRT BridgingAs Ieee 802.1D standard, DEC or Vlan bridge BC-29Transparently Bridged VLANs for ISL Command PurposeChoosing the OUI for Ethernet Type II Frames BC-30Transparently Bridged VLANs on an Fddi Backbone BC-31BC-32 Routing between ISL VLANsSubinterface with the Vlan Specifies a subinterfaceSame bridge group BC-33Configuring Transparent Bridging over WANs Configuring a Subscriber Bridge GroupConfiguring Fast-Switched Transparent Bridging over ATM BC-34Command Configuring Transparent Bridging over DDRDefining the Protocols to Bridge Specifying the Bridging ProtocolDetermining Access for Bridging Configuring Transparent Bridging over Frame RelayConfiguring an Interface for Bridging Fast-Switched Transparent BridgingBridging in a Frame Relay Network with No Multicasts Configuring Transparent Bridging over Multiprotocol LapbBridging in a Frame Relay Network with Multicasts BC-37Configuring Transparent Bridging over Configuring Transparent Bridging over SmdsSpecifies IP-to-X.121 mapping BC-38Configuring Integrated Routing and Bridging Configuring Concurrent Routing and BridgingSpecifies a protocol to be routed on a bridge group BC-39Configuring the Bridge-Group Virtual Interface Configuring InterfacesEnabling Integrated Routing and Bridging BC-40BC-41 Configuring Protocols for Routing or BridgingBC-42 Configuring Transparent Bridging OptionsDisabling IP Routing BC-43 Configuring LAT CompressionEnabling Autonomous Bridging BC-44 Establishing Multiple Spanning-Tree DomainsEstablishes a multiple spanning-tree domain Filtering Transparently Bridged Packets Configuring Bridge Table Aging TimeForwarding Multicast Addresses BC-45BC-46 Setting Filters at the MAC LayerFiltering by Vendor Code Filters particular MAC-layer station addressesEthernet-ordered MAC address BC-47BC-48 Filtering by Protocol TypeType Configuration mode Defining and Applying Extended Access ListsInterface BC-49BC-50 BC-51 Filtering LAT Service AnnouncementsEnabling LAT Group Code Service Filtering BC-52 Adjusting Spanning-Tree ParametersSetting an Interface Priority Setting the Bridge PriorityAdjusting Bpdu Intervals Assigning Path CostsDefining the Forward Delay Interval Adjusting the Interval between Hello BPDUsDisabling the Spanning Tree on an Interface Defining the Maximum Idle IntervalBC-55 BC-56 Configuring the PA-12E/2FE Port AdapterBC-57 Monitoring and Maintaining the PA-12E/2FE Port AdapterBC-58 BC-59 BC-60 Configuring Circuit GroupsConfigures a transmission pause interval Configuring Constrained Multicast FloodingDistributes base load on the source MAC address only BC-61BC-62 BC-63 Basic Bridging ExampleBC-64 Concurrent Routing and Bridging ExampleBC-65 Basic Integrated Routing and Bridging ExampleBC-66 Complex Integrated Routing and Bridging ExampleBC-67 Transparently Bridged VLANs Configuration ExampleBC-68 Router OneRouter Two BC-69 Router ThreeBC-70 Routing between VLANs Configuration ExampleEthernet-to-FDDI Transparent Bridging Example BC-71 Ethernet Bridging ExampleRouter/Bridge in Building BC-72 SRT Bridging ExampleConfiguration for the Thule, Greenland Router Configuration for the New York City RouterMulticast or Broadcast Packets Bridging Example BC-73BC-74 Configuration for BridgeTransparent Bridging Example BC-75 Frame Relay Transparent Bridging ExamplesBridging in a Frame Relay Network with No Multicasts BC-76 Transparent Bridging over Multiprotocol Lapb ExampleBridging in a Frame Relay Network with Multicasts BC-77 Transparent Bridging over DDR ExamplesBC-78 Fast-Switched Transparent Bridging over Smds ExampleComplex Transparent Bridging Network Topology Example Bridged Subnetworks with Domains BC-79BC-80 Configuration for Router aConfiguration for Router C Configuration for Router BConfiguration for Router D BC-81BC-82 Fast Ethernet Subscriber Port, Frame Relay Trunk ExampleATM Subscriber Ports, ATM Trunk Example BC-83 BC-84 Configuration of IRB for PA-12E/2FE Port Adapter Example

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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