cdp(cisco discovery protocol,cisco\u767c\u73fe\u5354\u5b9a)
\u601d\u79d1\u5c08\u5c6c\u5354\u5b9a,\u53ef\u53d6\u5f97\u76f4\u63a5\u76f8\u9023\u7684\u9130\u5c45\u8cc7\u6599
\u5c6cOSI layer2\u5c64,\u6c92\u8a2dIP\u4e5f\u53ef\u4ea4\u63db\u8cc7\u8a0a
\u4e0d\u7ba1\u4e0a\u5c64\u5354\u5b9a,\u6216vlan,…\u7b49\u70ba\u4f55,\u90fd\u53ef\u4ee5\u4f7f\u7528
10.3\u7248\u5f8c\u624d\u6709\u6b64\u5354\u5b9a
ps:\u53ef\u53d6\u5f97\u9130\u5c45ip,\u65b9\u4fbf\u9032\u884ctelnet<\/p>\n\n\n\n
\u555f\u52d5cdp
(config)#[no] cdp run
\u9810\u8a2d\u662f\u555f\u52d5\u72c0\u614b,\u82e5\u52a0no\u8868\u793a\u95dc\u9589<\/p>\n\n\n\n
\u8a72\u4ecb\u9762\u555f\u52d5cdp
(config-if)#[no] cdp enable
\u9810\u8a2d\u662f\u555f\u52d5\u72c0\u614b,\u82e5\u52a0no\u8868\u793a\u95dc\u9589<\/p>\n\n\n\n
…………….<\/p>\n\n\n\n
\u53d6\u5f97cdp\u8a08\u6642\u5668\u8207\u4fdd\u7559\u671f\u9650
#show cdp
\u756b\u9762\u5927\u81f4\u5982\u4e0b:
Global CDP information:
\u3000Sending CDP packets every 60 seconds \/\/\u6bcf60\u79d2\u9001\u51famulticast\u5c01\u5305
\u3000Sending a holdtime value of 180 seconds \/\/\u82e5\u904e180sec\u4ecd\u7136\u6c92\u6536\u5230\u76f8\u9130\u8a2d\u5099\u7684cdp\u5c01\u5305,\u5247\u4e1f\u68c4
\u3000Sending CDPv2 advertisements is enabled<\/p>\n\n\n\n
\u6536\u96c6\u9130\u5c45\u8cc7\u8a0a
#show cdp neighbor [detail]
[detail]\u53ef\u5728\u591a\u986f\u793a\u90e8\u88dd\u7f6e\u7684\u8cc7\u8a0a,\u5305\u62ecip,version…\u7b49
ps:\u4f7f\u7528detail\u7b49\u540c\u65bcshow cdp entry *
\u756b\u9762\u5927\u81f4\u5982\u4e0b:
Capability Codes: R – Router, T – Trans Bridge, B – Source Route Bridge
S -Switch, H – Host, i – IGMP, r – Repeater
Device ID Local Intrfce Holdtme Capability Platform Port ID
router1 \u3000\u3000Eth0\u3000\u3000\u3000 173\u3000\u3000\u3000 R\u3000\u3000 2621\u3000 Fas 0\/0
router2 \u3000\u3000Bri0\u3000\u3000\u3000 173\u3000\u3000\u3000 R\u3000\u3000 2621\u3000 Bri 0
router3 \u3000\u3000Ser0\u3000\u3000\u3000 173\u3000\u3000\u3000 R\u3000\u3000 2501\u3000 Ser
\u52a0detail\u5f8c\u756b\u9762\u5927\u81f4\u5982\u4e0b
————————-
Device ID: router2 \/\/\u53ef\u7528hostname\u6307\u4ee4\u8a2d\u5b9a\u540d\u7a31
Entry address(es):
IP address: 160.10.1.2 \/\/\u9130\u5c45ip\u4f4d\u7f6e
Platform: Boson 2621 , Capabilities: Router
Interface: Eth0, Port ID (outgoing port): Fas 0\/0 \/\/\u672c\u5730\u6536\u5230cdp\u8cc7\u8a0a\u7684eth0\u4ecb\u9762,\u548c\u9130\u5c45\u7684fa0\/0\u754c\u9762\u76f8\u9023
Holdtime: 170 sec
Version :
Boson Operating System Software
Software, Version 12.1(16), RELEASE SOFTWARE (fc2)
Copyright (c) 1986-2001 by Systems, Inc.
Compiled Fri 02-Mar-01 17:34 by dchih
————————-
Device ID: router3
…\u4ee5\u4e0b\u7701\u7565<\/p>\n\n\n\n
#show cdp entry *
\u53ef\u5c07\u8a2d\u5099\u8a0a\u606f\u5ee3\u64ad\u7d66\u76f4\u63a5\u76f8\u9130\u7684\u9130\u5c45,\u8a0a\u606f\u5305\u542b\u4e86mac\u8207ip\u4f4d\u5740\u548c\u5c0d\u5916\u9023\u63a5\u7684\u4ecb\u9762
\u5be6\u9ad4\u5c64\u82e5\u53ef\u6b63\u5e38\u904b\u4f5c,\u5247\u53ef\u986f\u793a\u51fa\u6240\u6709\u76f4\u63a5\u9023\u5230cisco\u7684\u5176\u4ed6\u8a2d\u5099,\u82e5\u7121\u6cd5\u986f\u793a\u53ef\u80fd\u7b2c\u4e00\u5c64\u51fa\u73fe\u554f\u984c
ps:\u56e0\u63d0\u4f9b\u8cc7\u8a0a\u5145\u8db3\u6210\u70ba\u6f5b\u5728\u5b89\u5168\u98a8\u96aa,\u56e0\u6b64\u53ea\u53ef\u5728cisco\u8a2d\u5099\u4e2d\u4f7f\u7528<\/p>\n\n\n\n
\u6536\u96c6\u57e0\u8207\u754c\u9762\u8cc7\u8a0a
#show cdp interface
\u756b\u9762\u5927\u81f4\u5982\u4e0b:
Serial0 is up, line protocol is up
encapsulation HDLC
Sending CDP packets every 60 seconds
Holdtime is 180 seconds
Serial1 is down, line protocol is down
encapsulation HDLC
Sending CDP packets every 60 seconds
Holdtime is 180 seconds
Ethernet0 is up, line protocol is up
encapsulation ARPA
Sending CDP packets every 60 seconds
Holdtime is 180 seconds
Bri0 is up, line protocol is up
encapsulation HDLC
Sending CDP packets every 60 seconds
Holdtime is 180 seconds
Bri0:1 is down, line protocol is down
encapsulation HDLC
Sending CDP packets every 60 seconds
Holdtime is 180 seconds
Bri0:2 is down, line protocol is down
encapsulation HDLC
Sending CDP packets every 60 seconds
Holdtime is 180 seconds<\/p>\n\n\n\n
\u6536\u96c6\u754c\u9762\u4ea4\u901a\u8cc7\u8a0a
#show cdp traffic
\u756b\u9762\u5927\u81f4\u5982\u4e0b:
Packets output: 415, Input: 514
Hdr syntax: 408, Chksum error: 0, Encaps failed: 6
No memory: 0, Invalid packet: 0, Fragmented: 0<\/p>\n\n\n\n
…………………………..<\/p>\n\n\n\n
\u8a2d\u5b9acdp\u8a08\u6642\u5668
(config)#cdp timer < sec>
\u53ef\u8a2d\u5b9a\u5e7e\u79d2\u8a62\u554f\u4e00\u6b21\u9130\u5c45<\/p>\n\n\n\n
\u8a2d\u5b9acdp\u4fdd\u7559\u671f\u9650
(config)#cdp holdtime < sec><\/p>\n\n\n\n
ps
(config)#cdp ?
run
advertise-v2\u3000 CDP sends version-2 advertisements
holdtime\u3000 Specify the holdtime (in sec) to be sent in packets
timer\u3000 Specify the rate at which CDP packets are sent(in sec)<\/p>\n","protected":false},"excerpt":{"rendered":"
cdp(cisco discovery protocol,c …<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"fifu_image_url":"","fifu_image_alt":"","_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[32],"tags":[],"class_list":["post-898","post","type-post","status-publish","format-standard","hentry","category-cisco-network"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/898","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/comments?post=898"}],"version-history":[{"count":0,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/posts\/898\/revisions"}],"wp:attachment":[{"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/media?parent=898"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/categories?post=898"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/systw.net\/note\/wp-json\/wp\/v2\/tags?post=898"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}