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CDP telnet ( MÔN THIẾT KẾ VÀ CÀI ĐẶT MẠNG )

CDP AND TELNET

LAN Connections

© 2007 Cisco Systems, Inc. All rights reserved.

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Cisco Discovery Protocol

• CDP is a proprietary utility that gives you a
summary of directly connected switches, routers,
and other Cisco devices.
• CDP discovers neighboring devices regardless of
which protocol suite they are running.

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-2



Discovering Neighbors with CDP
- CDP runs on routers with Cisco IOS®
software Release 10.3 or later and on Cisco
switches and hubs.
- Summary information
includes:






Device identifiers
Address list
Port identifier
Capabilities list
Platform

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-3


Discovering Neighbors with CDP
- CDP runs on routers with Cisco IOS®
software Release 10.3 or later and on Cisco
switches and hubs.
- Summary information
includes:






Device identifiers
Local interface
Outgoing Port
Capabilities list


Platform

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-4


Using CDP

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-5


Using the show cdp
neighbors Command

© 2007 Cisco Systems, Inc. All rights reserved.

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Using the show cdp entry Command

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-7


Additional CDP Commands

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-8


Creating a Network Map

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-9


Using Telnet to Connect to Remote Devices

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-10


Viewing Telnet Connections

© 2007 Cisco Systems, Inc. All rights reserved.

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Suspending and Resuming
a Telnet Session

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-12


Closing a Telnet Session

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-13


Using the ping and trace Commands
Router###ping
Router###ping 10.1.1.10
10.1.1.10
Type
Type escape
escape sequence
sequence to
to abort.
abort.
Sending
Sending 5,
5, 100-byte
100-byte ICMP
ICMP Echos
Echos to
to 10.1.1.10,
10.1.1.10, timeout
timeout is
is 22 seconds:
seconds:
!!!!!
!!!!!
Success
Success rate
rate is
is 100
100 percent
percent (5/5),
(5/5), round-trip
round-trip min/avg/max
min/avg/max == 4/4/4
4/4/4 ms
ms
Router#trace
Router#trace 192.168.101.101
192.168.101.101
Type
Type escape
escape sequence
sequence to
to abort.
abort.
Tracing
Tracing the
the route
route to
to 192.168.101.101
192.168.101.101
11 p1r1
p1r1 (192.168.1.49)
(192.168.1.49) 20
20 msec
msec 16
16 msec
msec 16
16 msec
msec
22 p1r2
p1r2 (192.168.1.18)
(192.168.1.18) 48
48 msec
msec ** 44
44 msec
msec
Router#
Router#

© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-14


© 2007 Cisco Systems, Inc. All rights reserved.

ICND1 v1.0—4-15



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