show cdp neighbor detail

All

In the boson test there is a question that states the following Which of the following would be displayed by the command "SHOW CDP NEIGHBOR DETAIL" a) The incomming/outgoing port b)The routers hostname c) Ammount of Flash Memory Available d) The Subnet Mask , if IP is configured e) The hardware platform f) One address per protocol

Now I know that A ,E and F are correct however they say it also shows the hosthname, see below output from a router at work and let me know where I am going wrong

Telehouse-1>sho cdp neighbor detail

------------------------- Device ID: Server_Room_Switch Entry address(es): IP address: 10.0.70.20 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet2/0, Port ID (outgoing port): FastEthernet0/1 Holdtime : 135 sec

Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(19)EA1c, RELEASE SOFTWARE (fc2) Copyright (c) 1986-2004 by cisco Systems, Inc. Compiled Mon 02-Feb-04 23:29 by yenanh

advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000001121816B40FF0000 VTP Management Domain: '' Native VLAN: 1 Duplex: full

------------------------- Device ID: Hydro_2950t Entry address(es): IP address: 10.0.77.20 Platform: cisco WS-C2950T-24, Capabilities: Switch IGMP Interface: FastEthernet0/1.1, Port ID (outgoing port): FastEthernet0/2 Holdtime : 179 sec

Version : Cisco Internetwork Operating System Software IOS (tm) C2950 Software (C2950-I6Q4L2-M), Version 12.1(19)EA1c, RELEASE SOFTWARE (fc2) Copyright (c) 1986-2004 by cisco Systems, Inc. Compiled Mon 02-Feb-04 23:29 by yenanh

advertisement version: 2 Protocol Hello: OUI=0x00000C, Protocol ID=0x0112; payload len=27, value=00000000FFFFFFFF010221FF000000000000000FF79F6E40FF0000 VTP Management Domain: '' Native VLAN: 1 Duplex: full

Telehouse-1>

At no point in there other than at the command line do I see the routers name Can anyone advise at all?

Thats the Device ID the hostname is

version 12.1 service timestamps debug uptime service timestamps log uptime service password-encryption ! hostname I-netlink_Cisco

Thats because you set a device ID in the SNMP community. That over rides the host name as showing in the CDP table.

To prove it, remove the snmp ID setting. Clear CDP info. Wait about 30seconds and you'll see the table populated with the hostnames as opposed to the device ID's.

-Brian

Thanks I have done that and your right, thanks alot much appreciated

The "Device ID" field is the device hostname (i.e. "Server_Room_Switch", "Hydro_2950t"). It is listed at the beginning of the "show cdp nei detail" output.

Tony