3750G#show cdp
Global CDP information:
Sending CDP packets every 60 seconds
Sending a holdtime value of 180 seconds
Sending CDPv2 advertisements is enabled
#show cdp entry * ------------------------- Device ID: C2960G-0.246 Entry address(es): IP address: 172.16.0.246 Platform: cisco WS-C2960G-48TC-L, Capabilities: Switch IGMP Interface: GigabitEthernet2/0/12, Port ID (outgoing port): GigabitEthernet0/48 Holdtime : 125 sec Version : Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(50)SE5, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by Cisco Systems, Inc. Compiled Tue 28-Sep-10 13:44 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000203706668480FF0000 VTP Management Domain: 'example' Native VLAN: 1 Duplex: full Management address(es): IP address: 172.16.0.246 ------------------------- Device ID: CN282981530095 Entry address(es): IP address: 192.168.3.63 Platform: PCM6220, Capabilities: Router Interface: GigabitEthernet1/0/1, Port ID (outgoing port): 1/0/17 Holdtime : 161 sec Version : 3.1.3.9 advertisement version: 2 Management address(es): ------------------------- Device ID: A1601-3750G Entry address(es): IP address: 172.16.0.241 Platform: cisco WS-C3750G-24TS-1U, Capabilities: Router Switch IGMP Interface: GigabitEthernet1/0/11, Port ID (outgoing port): GigabitEthernet1/0/1 Holdtime : 177 sec --More--
#show cdp interface GigabitEthernet1/0/1 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/2 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/3 is down, line protocol is down Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/4 is down, line protocol is down Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/5 is down, line protocol is down Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/6 is down, line protocol is down Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/7 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/8 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/9 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/10 is down, line protocol is down Encapsulation ARPA Sending CDP packets every 60 seconds Holdtime is 180 seconds GigabitEthernet1/0/11 is up, line protocol is up Encapsulation ARPA Sending CDP packets every 60 seconds --More--
#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone
Device ID Local Intrfce Holdtme Capability Platform Port ID
C2960G-0.246 Gig 2/0/12 172 S I WS-C2960G Gig 0/48
CN282981530095 Gig 1/0/1 177 R PCM6220 1/0/17
A1601-3750G Gig 1/0/11 164 R S I WS-C3750G Gig 1/0/1
Switch Gig 2/0/7 152 S I WS-C3750X Gig 1/0/48
Switch Gig 2/0/11 175 S I WS-C2960- Fas 0/48
CN0D162M2829817C0042A04
Gig 1/0/2 163 R PC8024 1/0/10
G2960-0.252 Gig 2/0/15 73 S I WS-C2960G Gig 0/48
G2960-0.253 Gig 2/0/13 76 S I WS-C2960G Gig 0/48
G2960-0.250 Gig 2/0/19 179 S I WS-C2960G Gig 0/48
c2960-0.248 Gig 2/0/21 66 S I WS-C2960S Gig 1/0/48
c2960-0.251 Gig 2/0/17 146 S I WS-C2960G Gig 0/48
c2960-0.245 Gig 2/0/23 74 S I WS-C2960- Gig 0/2
#show cdp neighbors detail ------------------------- Device ID: C2960G-0.246 Entry address(es): IP address: 172.16.0.246 Platform: cisco WS-C2960G-48TC-L, Capabilities: Switch IGMP Interface: GigabitEthernet2/0/12, Port ID (outgoing port): GigabitEthernet0/48 Holdtime : 133 sec Version : Cisco IOS Software, C2960 Software (C2960-LANBASEK9-M), Version 12.2(50)SE5, RELEASE SOFTWARE (fc1) Technical Support: http://www.cisco.com/techsupport Copyright (c) 1986-2010 by Cisco Systems, Inc. Compiled Tue 28-Sep-10 13:44 by prod_rel_team advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000203706668480FF0000 VTP Management Domain: 'example' Native VLAN: 1 Duplex: full Management address(es): IP address: 172.16.0.246 ------------------------- Device ID: CN282981530095 Entry address(es): IP address: 192.168.3.63 Platform: PCM6220, Capabilities: Router Interface: GigabitEthernet1/0/1, Port ID (outgoing port): 1/0/17 Holdtime : 167 sec Version : 3.1.3.9 advertisement version: 2 Management address(es): ------------------------- Device ID: A1601-3750G Entry address(es): IP address: 172.16.0.241 Platform: cisco WS-C3750G-24TS-1U, Capabilities: Router Switch IGMP Interface: GigabitEthernet1/0/11, Port ID (outgoing port): GigabitEthernet1/0/1 Holdtime : 125 sec --More--
原文出处：Netkiller 系列 手札
本文作者：陈景峯
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