Neighbours IP Address

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Hi guys,

I'm facing a small issue here. I'm trying to find the neighbor switches IP address that connect to my core switch. I have tried to use command "cdp" but no ip appeared.

I have tried to enable lldp on my core switch however no ip appeared also.

Is there anything that I must configure so that I can see all the IP addresses that connect to my core switch?

Thank you in advance
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Posted 2 years ago

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Tripathy, Priya Ranjan, ESE

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Hey Hafiz,

Thanks for joining the Hub....

Coming to your query regarding the Neighbor IP addresses connected to the central switch, if we consider them as Extreme switches  then the only option i hope is available to run the command show edp ports all on the extreme switches. Whereas for Cisco switches show cdp neighbor discovery would give you the clear picture in detecting all the neighbor peers connected to the central one.

Hope  this clarifies you for your queries.
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Senguttuvan, Arun, Employee

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If you would want to know the neighbor switches IP address, then, "show edp ports <port#> detail" output will give you the IP.
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Please refer below. No IP address

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André Herkenrath, Employee

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You are running a EXOS, which is really old. I would propose to update to a more recent version. If you are running one of the "fifties" use a 15.3.5 if you use a more recent product I would recommend a 16.1.3.

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Senguttuvan, Arun, Employee

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Could you test it after initiating a ping between the switches. There should have been a ARP entry on the uplink for the IP to get populated in "show edp ports <port#> detail" output. Below is the sample output from my lab switch:

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Erik Auerswald, Embassador

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you should consider the use of LLDP. This is really nice in mixed-vendor environments, since most networking gear (even from Cisco) and many servers support LLDP.

To show all detected neighbors in detail:
show lldp neighbors detailed
You can (and usually should) enable additional information sent via LLDP:
enable lldp ports <PORT>
configure lldp port <PORT> advertise port-description
configure lldp port <PORT> advertise system-name
configure lldp port <PORT> advertise system-capabilities
configure lldp port <PORT> advertise management-address
I have just verified that the above configuration is available in EXOS 15.3, I do not have earlier versions available to check.

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Daniel Flouret, Employee

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EXOS v12.0 does support the advertisement of management address information through LLDP. Now, you must understand that this IP address is the one configured in the mgmt vlan. If you don't have al IP address configured for the mgmt vlan, then the switch will send the system MAC address instead...

Then, the
show lldp neighbors detailed 
command will show the management address of each neighbor.
lab0-sw2.4 # show lldp neighbors detailed 

LLDP Port 2 detected 1 neighbor
  Neighbor: 00:01:30:DF:00:01/1, age 9 seconds
    - Chassis ID type: MAC address (4)
      Chassis ID     : 00:01:30:DF:00:01
    - Port ID type: ifName (5)
      Port ID     : "1"
    - Time To Live: 120 seconds
    - Port Description: ""
    - System Name: "lab0-sw1"
    - System Description: "ExtremeXOS (Summit-PC) version \
                           by release-manager on Fri Jun 12 17:09:43 EDT 201\
    - System Capabilities : "Bridge, Router"
      Enabled Capabilities: "Bridge"
    - Management Address Subtype: IPv4 (1)
      Management Address        :
      Interface Number Subtype  : ifIndex (2)
      Interface Number          : 1000018
      Object ID String          : "null"

lab0-sw2.5 #
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You need to configure IP addresses on the vlans on both switches. Then you'll see that info with show edp port <<X>> detail.
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Erik Auerswald, Embassador

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The command
show edp ports all detail
shows all IP addresses configured on VLANs of EXOS neighbor switches with EDP enabled.