Neighbor Parser

How To Use

Run one or more of the below commands on your Cisco device

show cdp neighbors
show cdp neighbors detail
show lldp neighbors
show lldp neighbors detail

Copy the text output from the device
Paste it into the Neighbor Output field below
Adjust the Diagram by:
- Zooming in/out with the
  
  buttons
- Opening the diagram settings window with the button and changing the settings
Adjust/export the Neighbors table by:
- Dragging the columns to re-order them
- Adding/removing columns using the button
- Clicking the button to copy tab-separated data (ready to paste into a spreadsheet) to your clipboard
- Clicking the button to download a CSV of the neighbor table

Try It

Copy one or more of the examples below and paste it into the "Neighbor Output" field below to convert it to a table

SWITCH#show cdp neighbors detail
-------------------------
Device ID: INT2.example.com
Entry address(es):
  IP address: 10.0.0.14
Platform: cisco ASR1001-X,  Capabilities: Router IGMP
Interface: GigabitEthernet2/0/10,  Port ID (outgoing port): GigabitEthernet0
Holdtime : 131 sec

Version :
Cisco IOS Software [Fuji], ASR1000 Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.9.3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Wed 20-Mar-19 08:02 by mcpre

advertisement version: 2
Duplex: full
Management address(es):
  IP address: 10.0.0.14

-------------------------
Device ID: INT1.example.com
Entry address(es):
  IP address: 10.0.0.13
Platform: cisco ASR1001-X,  Capabilities: Router IGMP
Interface: GigabitEthernet1/0/10,  Port ID (outgoing port): GigabitEthernet0
Holdtime : 150 sec

Version :
Cisco IOS Software [Fuji], ASR1000 Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.9.3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Wed 20-Mar-19 08:02 by mcpre

advertisement version: 2
Duplex: full
Management address(es):
  IP address: 10.0.0.13

-------------------------
Device ID: CORE2.example.com(SERIAL)
Entry address(es):
  IP address: 10.0.16.3
Platform: N9K-C93180YC-EX,  Capabilities: Router Switch IGMP CVTA phone port
Interface: TenGigabitEthernet2/0/1,  Port ID (outgoing port): Ethernet1/46
Holdtime : 147 sec

Version :
Cisco Nexus Operating System (NX-OS) Software, Version 9.3(8)

advertisement version: 2
Native VLAN: 1
Duplex: full

-------------------------
Device ID: ESX9.example.com
Entry address(es):
Platform: VMware ESXi,  Capabilities: Switch
Interface: GigabitEthernet1/0/13,  Port ID (outgoing port): vmnic0
Holdtime : 127 sec

Version :
Releasebuild-19482537

advertisement version: 2
VTP Management Domain: ''
Duplex: full

-------------------------
Device ID: ESX9.example.com
Entry address(es):
Platform: VMware ESXi,  Capabilities: Switch
Interface: GigabitEthernet2/0/13,  Port ID (outgoing port): vmnic1
Holdtime : 127 sec

Version :
Releasebuild-19482537

advertisement version: 2
VTP Management Domain: ''
Duplex: full

-------------------------
Device ID: CORE1.example.com(SERIAL)
Entry address(es):
  IP address: 10.0.16.2
Platform: N9K-C93180YC-EX,  Capabilities: Router Switch IGMP CVTA phone port
Interface: TenGigabitEthernet1/0/1,  Port ID (outgoing port): Ethernet1/46
Holdtime : 147 sec

Version :
Cisco Nexus Operating System (NX-OS) Software, Version 9.3(8)

advertisement version: 2
Native VLAN: 1
Duplex: full

-------------------------
Device ID: ROUTER1.example.com
Entry address(es):
  IP address: 10.0.0.20
  IPv6 address: 2001:0DB8:0:6400::20  (global unicast)
  IPv6 address: FE80::5250  (link-local)
Platform: Cisco CISCO2901/K9,  Capabilities: Router Source-Route-Bridge Switch
Interface: GigabitEthernet1/0/17,  Port ID (outgoing port): GigabitEthernet0/0
Holdtime : 177 sec

Version :
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.7(3)M5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Fri 27-Sep-19 05:10 by prod_rel_team

advertisement version: 2
VTP Management Domain: ''
Duplex: full
Management address(es):
  IP address: 10.0.0.20

-------------------------
Device ID: ROUTER2.example.com
Entry address(es):
  IP address: 10.0.0.26
  IPv6 address: 2001:0DB8:0:6400::26  (global unicast)
  IPv6 address: FE80::AC30  (link-local)
Platform: Cisco CISCO2901/K9,  Capabilities: Router Source-Route-Bridge Switch
Interface: GigabitEthernet2/0/17,  Port ID (outgoing port): GigabitEthernet0/0
Holdtime : 165 sec

Version :
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.7(3)M7, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2020 by Cisco Systems, Inc.
Compiled Tue 01-Sep-20 15:17 by prod_rel_team

advertisement version: 2
VTP Management Domain: ''
Duplex: full
Management address(es):
  IP address: 10.0.0.26

-------------------------
Device ID: ROUTER3.example.com
Entry address(es):
  IP address: 10.0.0.19
  IPv6 address: 2001:0DB8:0:6400::19  (global unicast)
  IPv6 address: FE80::7350  (link-local)
Platform: Cisco CISCO2901/K9,  Capabilities: Router Source-Route-Bridge Switch
Interface: GigabitEthernet1/0/14,  Port ID (outgoing port): GigabitEthernet0/0
Holdtime : 160 sec

Version :
Cisco IOS Software, C2900 Software (C2900-UNIVERSALK9-M), Version 15.7(3)M5, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Fri 27-Sep-19 05:10 by prod_rel_team

advertisement version: 2
VTP Management Domain: ''
Duplex: full
Management address(es):
  IP address: 10.0.0.19

-------------------------
Device ID: MDS1.example.com(SERIAL)
Entry address(es):
  IP address: 10.0.0.68
Platform: DS-C9148-16P-K9,  Capabilities: Router Switch CVTA phone port
Interface: GigabitEthernet1/0/11,  Port ID (outgoing port): mgmt0
Holdtime : 149 sec

Version :
Cisco Nexus Operating System (NX-OS) Software, Version 6.2(1)

advertisement version: 2
Duplex: full
Management address(es):
  IP address: 10.0.0.68

-------------------------
Device ID: MDS2.example.com(SERIAL)
Entry address(es):
  IP address: 10.0.0.69
Platform: DS-C9148-16P-K9,  Capabilities: Router Switch CVTA phone port
Interface: GigabitEthernet2/0/11,  Port ID (outgoing port): mgmt0
Holdtime : 133 sec

Version :
Cisco Nexus Operating System (NX-OS) Software, Version 6.2(1)

advertisement version: 2
Duplex: full
Management address(es):
  IP address: 10.0.0.69


Total cdp entries displayed : 11
SWITCH#

SW1#show lldp neighbors detail
------------------------------------------------
Local Intf: Te1/0/1
Chassis id: 0000.0000.0001
Port id: Ethernet1/46
Port Description: SW1:Te1/0/1
System Name: CORE1.example.com

System Description:
Cisco Nexus Operating System (NX-OS) Software 9.3(8)
TAC support: http://www.cisco.com/tac
Copyright (c) 2002-2021, Cisco Systems, Inc. All rights reserved.

Time remaining: 111 seconds
System Capabilities: B,R
Enabled Capabilities: B,R
Management Addresses:
    Other: 2C FF 00 FF 00 FF 01
Auto Negotiation - not supported
Physical media capabilities - not advertised
Media Attachment Unit type - not advertised
Vlan ID: 1

------------------------------------------------
Local Intf: Gi1/0/10
Chassis id: 0000.0000.0002
Port id: Gi0
Port Description: OOB Management Link
System Name: INT1.example.com

System Description:
Cisco IOS Software [Fuji], ASR1000 Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.9.3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Wed 20-Mar-19 08:02 by mcpre

Time remaining: 116 seconds
System Capabilities: B,R
Enabled Capabilities: R
Management Addresses:
    IP: 10.0.0.13
    IPV6: 2001:0DB8::1
Auto Negotiation - not supported
Physical media capabilities - not advertised
Media Attachment Unit type - not advertised
Vlan ID: - not advertised

------------------------------------------------
Local Intf: Gi2/0/2
Chassis id: 0000.0000.0003
Port id: 0000.0000.1003
Port Description: eth1
System Name: STOR02-ct1

System Description:
FlashArray FA-m20r2 STOR02-ct1 202000000000+asdfasdf-53x

Time remaining: 3 seconds
System Capabilities: B,W,R,S
Enabled Capabilities: B
Management Addresses - not advertised
Auto Negotiation - supported, enabled
Physical media capabilities:
    1000baseT(FD)
    Pause(FD)
    100base-TX(FD)
    100base-TX(HD)
    10base-T(FD)
    10base-T(HD)
Media Attachment Unit type: 30
Vlan ID: - not advertised

------------------------------------------------
Local Intf: Gi2/0/1
Chassis id: 0000.0000.0004
Port id: 0000.0000.1004
Port Description: eth0
System Name: STOR02-ct1

System Description:
FlashArray FA-m20r2 STOR02-ct1 202000000000+asdfasdf-53x

Time remaining: 3 seconds
System Capabilities: B,W,R,S
Enabled Capabilities: B
Management Addresses - not advertised
Auto Negotiation - supported, enabled
Physical media capabilities:
    1000baseT(FD)
    Pause(FD)
    100base-TX(FD)
    100base-TX(HD)
    10base-T(FD)
    10base-T(HD)
Media Attachment Unit type: 30
Vlan ID: - not advertised

------------------------------------------------
Local Intf: Gi2/0/10
Chassis id: 0000.0000.0005
Port id: Gi0
Port Description: OOB Management Link
System Name: INT2.example.com

System Description:
Cisco IOS Software [Fuji], ASR1000 Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.9.3, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2019 by Cisco Systems, Inc.
Compiled Wed 20-Mar-19 08:02 by mcpre

Time remaining: 103 seconds
System Capabilities: B,R
Enabled Capabilities: R
Management Addresses:
    IP: 10.0.0.14
    IPV6: 2001:0DB8::2
Auto Negotiation - not supported
Physical media capabilities - not advertised
Media Attachment Unit type - not advertised
Vlan ID: - not advertised

------------------------------------------------
Local Intf: Te2/0/1
Chassis id: 0000.0000.0006
Port id: Ethernet1/46
Port Description: SW1:Te1/0/2
System Name: CORE2.example.com

System Description:
Cisco Nexus Operating System (NX-OS) Software 9.3(8)
TAC support: http://www.cisco.com/tac
Copyright (c) 2002-2021, Cisco Systems, Inc. All rights reserved.

Time remaining: 96 seconds
System Capabilities: B,R
Enabled Capabilities: B,R
Management Addresses:
    Other: 2C FF 00 FF 00 FF 06
Auto Negotiation - not supported
Physical media capabilities - not advertised
Media Attachment Unit type - not advertised
Vlan ID: 1


Total entries displayed: 6

SW1#
SW1#

SW2#show cdp neighbors
Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                  S - Switch, H - Host, I - IGMP, r - Repeater, P - Phone,
                  D - Remote, C - CVTA, M - Two-port Mac Relay

Device ID        Local Intrfce     Holdtme    Capability  Platform  Port ID
000000000001     Gig 1/0/10        114                    Meraki MV Port 0
WAP1             Gig 1/0/9         149              R T   AIR-AP380 Gig 0
CORE2.example.com(SERIALNUM)
                 Ten 1/1/4         152            R S I C N9K-C9318 Eth 1/41
CORE1.example.com(SERIALNUM)
                 Ten 1/1/3         152            R S I C N9K-C9318 Eth 1/41
WAP2             Gig 1/0/48        161              R T   Unknown   Gig 0
000000000002     Gig 1/0/40        179                    Meraki MV Port 0
ROUTER1.example.com
                 Gig 1/0/44        159             R B S  CISCO2901 Gig 0/0

Total cdp entries displayed : 7
SW2#

SW2#show lldp neighbors
Capability codes:
    (R) Router, (B) Bridge, (T) Telephone, (C) DOCSIS Cable Device
    (W) WLAN Access Point, (P) Repeater, (S) Station, (O) Other

Device ID           Local Intf     Hold-time  Capability      Port ID
CAM1                Gi1/0/40       120                        0
CORE1.subdomain.examTe1/1/3        120        B,R             Ethernet1/41
CAM2                Gi1/0/10       120                        0
FW1                 Gi1/0/1        120        R               0
WAP1                Gi1/0/9        120        B               0
WAP2                Gi1/0/48       120        B               0
CORE2.subdomain.examTe1/1/4        120        B,R             Ethernet1/41

Total entries displayed: 7

SW2#

Platform Support

Command output from these platforms has been tested against Neighbor Parser. Other platforms may work, but have not been explicitly tested.

	IOS (Classic)	IOS-XE	NX-OS
`show cdp neighbors`
`show cdp neighbors detail`
`show lldp neighbors`
`show lldp neighbors detail`

Privacy

Neighbor Parser is a 100% client-side application. The website is completely static and sends none of your private data over the internet.

The code is open-source and is published on the GitHub page.

You can use this webpage offline (with no network access) by either:

Loading this page while online, then setting your browser to offline or removing your network access. The site will fully operate while offline.
Downloading the offline ZIP file, unzipping it, and opening the dist/index.html file with your browser.

Bugs

If you encouter a bug or would like to see a feature added to this web app, please open an issue on the GitHub page.

To contribute features or bug fixes, fork the repo and submit a merge request.

#	Type	Local Interface	Name	Remote Interface	Platform	Addresses
1	CDP	GigabitEthernet1/0/1	WAP1	GigabitEthernet0	AIR-AP3802I-B-K9	10.10.10.11, FE80::11
2	LLDP	Gi1/0/2	WAP2	eth0		10.10.10.12, FE80::12

CDP and LLDP Neighbor Parser

How To Use

Try It

Example: `show cdp neighbors detail`

CDP

Example: `show lldp neighbors detail`

LLDP

Example: `show cdp neighbors`

CDP-SHORT

Example: `show lldp neighbors`

LLDP-SHORT

Platform Support

Privacy

Bugs

Instructions

CDP and LLDP Neighbor Parser

How To Use

Try It

Example: show cdp neighbors detail CDP

Example: show cdp neighbors detail

CDP

Example: show lldp neighbors detail LLDP

Example: show lldp neighbors detail

LLDP

Example: show cdp neighbors CDP-SHORT

Example: show cdp neighbors

CDP-SHORT

Example: show lldp neighbors LLDP-SHORT

Example: show lldp neighbors

LLDP-SHORT

Platform Support

Privacy

Bugs

Example: `show cdp neighbors detail`

Example: `show lldp neighbors detail`

Example: `show cdp neighbors`

Example: `show lldp neighbors`