Cisco Systems BC-23 manual Configuring Transparent Bridging over Frame Relay, BC-36

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Configuring Transparent Bridging

Transparent and SRT Bridging Configuration Task List

Determining Access for Bridging

You can determine access by either permitting all bridge packets or by controlling access according to Ethernet type codes.

To permit all transparent bridge packets, use the following command in global configuration mode:

Command

Purpose

 

 

dialer-list dialer-groupprotocol bridge

Defines a dialer list that permits all transparent bridge packets.

permit

 

 

 

To control access by Ethernet type codes, use the following commands in global configuration mode:

 

Command

Purpose

Step 1

 

 

access-listaccess-list-number

Permits packets according to Ethernet type codes (access list numbers

 

{permit deny} type-code [mask]

must be in the range 200 to 299).

Step 2

 

 

dialer-list dialer-groupprotocol

Defines a dialer list for the specified access list.

 

bridge list access-list-number

 

 

 

 

For a table of some common Ethernet types codes, see the “Ethernet Types Codes” appendix in the Cisco IOS Bridging and IBM Networking Command Reference, Volume I.

Configuring an Interface for Bridging

You can configure serial interfaces or ISDN interfaces for DDR bridging. To configure an interface for DDR bridging, use the following commands beginning in global configuration mode:

 

Command

Purpose

Step 1

 

 

interface type number

Specifies the serial or ISDN interface and enter interface

 

 

configuration mode.

Step 2

 

 

dialer string dial-string

Configures the dial string to call.

 

dialer map bridge [name hostname]

or

 

[broadcast]dial-string[:isdn-subaddress]

Configures a dialer bridge map.

 

 

Step 3

 

 

bridge-group bridge-group

Assigns the specified interface to a bridge group.

 

 

 

Configuring Transparent Bridging over Frame Relay

The transparent bridging software supports bridging of packets over Frame Relay networks. This ability is useful for such tasks as transmitting packets from proprietary protocols across a Frame Relay network. Bridging over a Frame Relay network is supported both on networks that support a multicast facility and those that do not. Both cases are described in this section.

Fast-Switched Transparent Bridging

The transparent bridging software provides fast-switched transparent bridging for Frame Relay encapsulated serial and High-Speed Serial Interface (HSSI) networks.

Switched virtual circuits (SVCs) are not supported for transparent bridging in this release. All the Permanent virtual circuits (PVCs) configured on a subinterface must belong to the same bridge group.

Cisco IOS Bridging and IBM Networking Configuration Guide

BC-36

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Contents Transparent and SRT Bridging BC-23BC-24 Transparent Bridging FeaturesIntegrated Routing and Bridging Bridge-Group Virtual Interface BC-25BC-26 Bridge-Group Virtual Interface in the RouterBC-27 SRT Bridging FeaturesOther Considerations 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-41BC-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 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-47BC-48 Filtering by Protocol TypeType Interface Defining and Applying Extended Access ListsConfiguration mode BC-49BC-50 BC-51 Filtering LAT Service AnnouncementsEnabling LAT Group Code Service Filtering 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-67BC-68 Router OneRouter Two Router Three BC-69BC-70 Routing between VLANs Configuration ExampleEthernet-to-FDDI Transparent Bridging Example BC-71 Ethernet Bridging ExampleRouter/Bridge in Building SRT Bridging Example BC-72Multicast or Broadcast Packets Bridging Example Configuration for the New York City RouterConfiguration for the Thule, Greenland Router 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 Transparent Bridging over DDR Examples BC-77BC-78 Fast-Switched Transparent Bridging over Smds ExampleComplex Transparent Bridging Network Topology Example BC-79 Bridged Subnetworks with DomainsConfiguration for Router a BC-80Configuration for Router D Configuration for Router BConfiguration for Router C BC-81BC-82 Fast Ethernet Subscriber Port, Frame Relay Trunk ExampleATM Subscriber Ports, ATM Trunk Example 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.