Cabletron Discovery Protocol (CDP)
4-77
4
Example
This example shows how to display information on CDP aware devices connected to
the network. The ‘Capability Codes’ referenced in the Capability column describe
the specific capabilities of the connected devices (see Table 3-20 on page 4-77.)
Similarly the ‘Neighbor types’ referenced in the Nbr type column describe the
attributes of the connected devices (see Table 3-21 on page
4-77.)
Console#sh cdp neighbors
Capability Codes:
igmp(1),rip(2),bgp(3),ospf(4),dvmrp(5),ieee8021q(6),
gvrp(7),gmrp(8),igmpSnoop(9)
Neighbor types :
secureFastSwitch(1), dot1qSwitch(2), router(3), dot1dBridge(4)
vlanManager(5), dnsServer(6), dhcpServer(7), dnsDhcpServer(8)
Device ID Local Intrface Holdtime Capability Nbr type Nbr IP Port ID
lab-7206 Eth 0 157 2 2,3 192.168.1.1 Fas 0/0/0
lab-as5300-1 Eth 0 163 2 2 0.0.0.0 Fas 0
lab-3621 Eth 0 140 1,2,5 2,3 192.168.1.2 Fas 0/0
008024 2758E0 Eth 0 132 4 2 192.169.1.3 Eth 1/2
Console#
Table 4-25. Show CDP Neighbors Output - Capability Codes
Field Capability
Code
Description
igmp 1 Internet Group Management Protocol is enabled on the transmitting port.
rip 2 The connected device performs routing using Routing Internet Protocol.
bgp 3 The connected device performs routing using Border Gateway Protocol.
ospf 4 The connected device performs routing using Open Shortest Path First.
dvmrp 5 The connected device performs routing using Distance Vector Multicast Routing
Protocol.
IEEE 802.1q 6 The connected device and the port to which it is connected support IEEE 802.1Q
VLAN packet format.
gvrp 7 The connected device supports GARP VLAN registration protocol.
gmrp 8 The connected device supports Group Multicast Registration Protocol.
igmpSnoop 9 The connected device is a bridge and supports Internet Group Management
Protocol snooping.
Table 4-26. Show CDP Neighbors Output - Neighbor Types
Field Number
Type
Description
secureFastSwitch 1 The connected device is a switch running Cabletron SecureFast software.
dot1qSwitch 2 The connected device supports IEEE 802.1Q VLANs.
router 3 The connected device is a router.
dot1dBridge 4 The connected device is an IEEE 802.1D bridge.
vlanManager 5 The connected device is can manage VLANs.
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