Verifying FDP

After enabling FDP you can verify the configuration and view FDP information.

Ensure that FDP has been enabled.

You can display the following Foundry Discovery Protocol (FDP) information:

  • FDP entries for Ruckus neighbors
  • Individual FDP entries
  • FDP information for an interface on the device you are managing
  • FDP packet statistics
NOTE

Foundry Discovery Protocol (FDP) packets are blocked at PE interfaces, even when FDP pass-through is configured. However, the packets are still forwarded upstream for processing in the CB. Although FDP neighbors can be displayed within the Campus Fabric domain, for example, with the show fdp neighbor command, no FDP packets are forwarded to non-SPX devices (that is, to devices that are connected to PEs but that are not part of the Campus Fabric domain).

NOTE
If the Ruckus device has intercepted CDP updates, then the CDP information is also displayed.
  1. To display a summary list of all the Ruckus neighbors that have sent FDP updates to this Ruckus device enter the following command:
    device# show fdp neighbors
    
    Capability Codes: R - Router, T - Trans Bridge, B - Source Route Bridge
                      S - Switch, H - Host, I - IGMP, r - Repeater
    (*) indicates a CDP device
       Device ID      Local Int    Holdtm Capability Platform     Port ID
       -------------- ------------ ------ ---------- ------------ ----------
       deviceB        Eth 1/2/9    178    Router     FastIron Rou Eth 1/2/9
    
  2. To display detailed information about all the Ruckus neighbors that have sent FDP updates to this Ruckus device enter the following command:
    device# show fdp neighbors detail
    
    Device ID: FastIronB configured as default VLAN1, tag-type8100
    Entry address(es):
      IP address: 192.168.0.13
      IPv6 address (Global): c:a:f:e:c:a:f:e
    Platform: FastIron Router,  Capabilities: Router
    Interface: Eth 1/2/9
    Port ID (outgoing port): Eth 1/2/9 is TAGGED in following VLAN(s):
     9 10 11
    Holdtime : 176 seconds
    Version :
    Foundry, Inc. Router, IronWare Version 07.6.01b1T53 Compiled on Aug 29
    2002 at 10:35:21 labeled as B2R07601b1
  3. To display detailed FDP entry information for a specific Ruckus neighbor device, enter the following command:
    device# show fdp entry FastIronB
    
    Device ID: FastIronB configured as default VLAN1, tag-type8100
    Entry address(es):
    Platform: FastIron Router,  Capabilities: Router
    Interface: Eth 1/2/9
    Port ID (outgoing port): Eth 1/2/9 is TAGGED in following VLAN(s):
     9 10 11
    Holdtime : 176 seconds
    Version :
    Foundry, Inc. Router, IronWare Version 07.6.01b1T53 Compiled on Aug 29
    2002 at 10:35:21 labeled as B2R07601b1
    
  4. To display FDP information for a specific Ethernet interface, enter the following:
    device# show fdp interface ethernet 1/2/3
    
    FastEthernet1/2/3 is up, line protocol is up
      Encapsulation ethernet
      Sending FDP packets every 5 seconds
      Holdtime is 180 seconds
    This example shows information for a specific Ethernet interface indicating how often the port sends FDP updates and how long neighbors that receive the updates, can hold them before discarding them.
  5. To display FDP and CDP packet statistics, enter the following command:
    device# show fdp traffic
    
    CDP/FDP counters:
      Total packets output: 6, Input: 5
      Hdr syntax: 0, Chksum error: 0, Encaps failed: 0
      No memory: 0, Invalid packet: 0, Fragmented: 0
      Internal errors: 0