Chapter 3 Configuring the Cisco 1604 Router

Step 6—Testing the Cisco 1604 Connection to the Cisco AS5300

Step 3 Verify that the correct dialer map exists:

robo-austin#show dialer map

Static dialer map ip 10.1.254.1 name hq-sanjose (14085551234) on BRI0

Step 4 Ping the IP address assigned to the Cisco AS5300’s dialer interface. Note that the Cisco 1604 (robo-austin) quickly gets 4 of 5 pings back from the Cisco AS5300 (hq-sanjose). After the ping is sent, examine the background processes in the debug output that follows the ping example shown below:

robo-austin#ping 10.1.254.1 Type escape sequence to abort.

Sending 5, 100-byte ICMP Echos to 10.1.254.1, timeout is 2 seconds:

.!!!!

Success rate is 80 percent (4/5), round-trip min/avg/max = 116/182/372ms robo-austin#

The following comments apply to the debug output example that follows:

a.See 08:03:55.

The source and destination IP addresses of the DDR dial cause display. (s=10.1.254.4, d=10.1.254.1)

b.See 08:03:55.

Hq-sanjose’s hunt group number is dialed. (Attempting to dial 14085551234)

c.See 08:03:55.

ISDN Setup is transmitted.

(TX -> SETUP pd = 8 callref = 0x2F)

d.See 08:03:55.

A synchronous data bearer capability displays. (Bearer Capability i = 0x8890)

e.See 08:03:55.

The outgoing LCP configuration request is made. (BR0:1 LCP: O CONFREQ [Closed] id 42 len 28)

f.See 08:03:55.

The incoming LCP configuration request wants to authenticate with CHAP. (AuthProto CHAP (0x0305C22305))

g.See 08:03:55.

The outgoing acknowledgment says this peer will do CHAP. (LCP: O CONFACK [REQsent])

h.See 08:03:55.

Both PPP peers have received LCP CONFACK. LCP is now open. (BR0:1 LCP: State is Open)

i.See 08:03:55.

Authentication phase is initiated by robo-austin.

(BR0:1 PPP: Phase is AUTHENTICATING, by the peer)

j.See 08:03:55.

Robo-austin accepts a CHAP challenge initiated by hq-sanjose. The device robo-austin is not authenticating hq-sanjose, which is the desired behavior for this scenario.

(BR0:1 CHAP: I CHALLENGE id 5 len 31 from "hq-sanjose")

(BR0:1 CHAP: O RESPONSE id 5 len 32 from "robo-austin")

Cisco IOS Dial Services Quick Configuration Guide

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Cisco Systems 1604 Verify that the correct dialer map exists, See Isdn Setup is transmitted, Robo-austin#show dialer map

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.