Chapter 10


1:

Name the most common ISDN switch types in the U.S. and Canada?

A1:

basic-5ess, basic-dms100, basic-ni1.

2:

Type a command that sets up the switch-type NI1 for a Cisco IOS Software ISDN router in global configuration mode.

A2:

Router(config)#isdn switch-type basic-ni

3:

Type a command to define a local pool of 63 IP addresses for your core router, starting with 20.18.15.1, if the pool name is LOCAL_POOL.

A3:

router(config)#ip local pool LOCAL_POOL 20.18.15.1 20.18.15.62

4:

What is the theoretical maximum number of ports in PAT?

A4:

The total number of these ports is theoretically 2 16 = 65,536.

5:

How much memory consumes one NAT translation?

A5:

Each NAT translation consumes about 160 bytes of memory.

6:

Name at least five protocols that are supported by Cisco IOS Software NAT.

A6:

HTTP, TFTP, Telnet, Archie, Finger, NTP, and NFS.

7:

In the case of the virtual interfaces, what happens with the route when the connection is tear-down?

A7:

In the case of the virtual interfaces, because of his dynamic nature, the route is gone as soon as the connection is gone.

8:

Name three main functions of multilink systems.

A8:

Multilink systems must do the following: receive PDUs of a negotiated size ; combine multiple physical links into one logical link (bundle); receive and reassemble upper-layer protocol data units (PDUs).

9:

Why would you use multilink PPP between a remote office and corporate headquarters?

A9:

To increase bandwidth and reduce network latency.

10:

On which interface types can you use multilink PPP?

A10:

On any interface that supports DDR rotary groups and PPP , including ISDN , synchronous, and asynchronous lines.

11:

What does the MRRU stand for and at which stage of the PPP protocol is it used?

A11:

MRRU stands for Maximum Received Reconstructed Unit (MRRU). It is used during LCP negotiation to indicate to its peer that it is willing to be included in the multilink bundle.

12:

What is the purpose of using the endpoint discriminator (ED) option in MP?

A12:

The ED option determines which bundle to add the link to, and its primary use is to generate uniqueness in identifying MP bundles.

13:

What Cisco IOS Software command displays the status of the stack group members ?

A13:

The show sgbp command displays the status of the stack group members.

14:

Name the five possible states of the peer in the stack-group.

A14:

The five possible states for a peer in the stack-group are the following: IDLE, CONNECTING, WAIT_INFO, AUTHOK, and ACTIVE.




Troubleshooting Remote Access Networks CCIE Professional Development
Troubleshooting Remote Access Networks (CCIE Professional Development)
ISBN: 1587050765
EAN: 2147483647
Year: 2002
Pages: 235

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