Chapter 3 Configuring the Cisco 1604 Router

Step 5—Configuring Dial-on-Demand Routing

Step 3

Enter the show ip interface brief command to check the current state of the interface:

 

robo-austin# show ip interface brief

 

 

 

 

Interface

IP-Address

OK? Method

Status

Protocol

 

BRI0

10.1.254.4

YES manual

up

up

 

BRI0:1

unassigned

YES unset

down

down

 

BRI0:2

unassigned

YES unset

down

down

 

Ethernet0

10.1.4.1

YES manual

up

up

 

Serial0

unassigned

YES unset

administratively down down

Note Note that the status and protocol for BRI 0 and Ethernet 0 are both up/up, which is what is expected. The term “manual” means that you manually configured the interface since the last reboot. The two B channels (BRI0:1 and BRI0:2) are down because there are no active calls on the BRI interface at this time.

Tips

If you have trouble:

Make sure the correct ISDN switch type and SPIDs are configured.

Make sure your BRI line is connected to the correct port.

Step 5—Configuring Dial-on-Demand Routing

Set up the Dial-on-Demand Routing (DDR) routing components on the Cisco 1604. In most cases, a remote site with a single LAN requires a simple DDR configuration, which supports the routing table and call control in a circuit-switched environment.

In this case study, DDR takes the standard dialer map approach. You must configure specific parameters to establish connectivity with the Cisco AS5300 by using sync PPP. Parameters include a static route, username:password, and a dialer map.

To configure DDR, enter the following commands beginning in global configuration mode:

Step 1 Enter the configuration mode for the BRI interface.

robo-austin(config)# interface bri 0

Step 2 Define the interesting packets that activate the ISDN connection. Interesting packets reset the idle timer and trigger dialing. This dialer filter is defined by the dialer-list 2 command. See Step 7.

robo-austin(config-if)# dialer-group 2

Step 3 Disable fair queuing.

robo-austin(config-if)# no fair-queue

Step 4 Disable the Cisco discovery protocol unless you are using it for a specific purpose.

robo-austin(config-if)# no cdp enable

Step 5 Configure the interface to bring up the second B channel when the bandwidth load exceeds 60/255.

robo-austin(config-if)#dialer load-threshold 60 either

Cisco IOS Dial Services Quick Configuration Guide

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Cisco Systems 1604 manual Configuring Dial-on-Demand Routing, Disable fair queuing

1604 specifications

Cisco Systems 1604 is a multifaceted router that exemplifies the evolution of networking technology. Introduced in the 1990s, it was designed primarily for interconnecting local area networks (LANs) and wide area networks (WANs). As one of the early routers in the Cisco family, the 1604 laid the groundwork for numerous advancements in the networking space.

One of the standout features of the Cisco 1604 is its modular design. This architecture allows users to customize the router according to their specific needs by adding various modules and interface cards. This adaptability made it popular among organizations that required flexible networking solutions. The router supports multiple types of interfaces including Ethernet, Token Ring, and serial connections, accommodating a variety of networking environments.

In terms of performance, the Cisco 1604 offers impressive capabilities for its time. It supports both routing and bridging functions, enabling it to seamlessly integrate different types of networks. The router can handle up to 4Mbps of bandwidth, sufficient for small to medium-sized network environments. Its built-in memory capacity allows for efficient processing, providing a reliable platform for data communications.

The Cisco 1604 is built on Cisco's proprietary IOS (Internetwork Operating System), which is a critical component of its operation. IOS provides a robust command-line interface for configuration and management, facilitating advanced networking tasks such as routing protocols, security features, and network diagnostics. The support for multiple routing protocols, including RIP, OSPF, and EIGRP, enhances its functionality and compatibility with diverse network architectures.

Security features in the Cisco 1604 are notable, providing essential tools to safeguard data transmitted across networks. It supports various access control lists (ACLs) that enable administrators to regulate network traffic and restrict unauthorized access.

Moreover, the Cisco 1604 was designed with reliability in mind. It includes features like automatic keep-alives for connection monitoring and error-correction protocols to ensure consistent performance.

In conclusion, the Cisco Systems 1604 router represents a significant milestone in networking technology. Its modular design, high performance, advanced IOS capabilities, and robust security measures make it a noteworthy solution for businesses looking to build effective networking infrastructures. While newer models have surpassed its capabilities, the legacy of the Cisco 1604 continues to influence modern networking practices and designs.