Refer to the exhibit. The network administrator must prevent the switch Cat9K-2 IP address from being visible in LLDP without disabling the protocol. Which action must be taken to complete the task?
A.
Configure the no lldp mac-phy-cfg command globally on Cat9K-2.
B.
Configure the no lldp receive command on interface G1/0/21 on Cat9K-1.
C.
Configure the no lldp transmit command on interface G1/0/21 on Cat9K-1.
D.
Configure the no lldp tlv-select management-address command globally on Cat9K-2.
Hmm. I thought the same, since it's not covered in either the OCG or any of the other courses I've seen.
On the other hand, the official exam topics list from Cisco simply says:
"2.3 Configure and verify Layer 2 discovery protocols (Cisco Discovery Protocol and LLDP)"
So the question is arguably in scope.
This is why people resort to dumps. You can follow multiple courses and read the full two-volumes of the OCG (4000+ pages), and they'll still **** you on the exam unless you become a Cisco manual with legs.
R2#sh lldp entry R1.guisam.lan | se Mana
Management Addresses:
IP: 10.1.1.1
R1(config)#no lldp tlv-select management-address
R1(config)#no lldp run
R1(config)#lldp run
R2#sh lldp entry R1.guisam.lan | se Mana
Management Addresses - not advertised
Disable and enable LLDP TLVs on management ports
By default, management ports advertise all LLDP TLVs except VLAN name TLV. You can disable the LLDP TLV advertisement on management ports using the following commands:
So it says here that the answer is C. But the vote says D. So what are we going to answer in the actual exam? Is it the answer on this dump (C) or is it the correct answer (D)?
Configuring LLDP - Cisco
"...
Configuring Optional LLDP Parameters
You can configure the frequency of LLDP updates, the amount of time for a receiving device to hold the information before discarding it, and the initialization delay time. You can also select the TLVs to include in LLDP packets.
Procedure
...
Step 6 - (Optional) [no] lldp tlv-select <tlv>
Specifies the TLVs to send and receive in LLDP packets. The available TLVs are
management-address
port-description
port-vlan
system-capabilities,
system-description
system-name
All available TLVs are enabled by default.
..."
https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst2960/software/release/12-2_37_ey/configuration/guide/scg/swlldp.pdf
D is the correct way to answer this question
You don’t want sw2’s ip to be seen, you should do something on sw2 not sw1, otherwise sw34567 still can see sw’s ip. a is about layer 2 address, wrong. So D
This example shows how to enable LLDP to send or receive IPv4 management address TLVs:
switch# configure terminal
switch(config)# lldp tlv-select management-address v4
Source:
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus3000/sw/layer2/602_U1_1/b_Cisco_n3k_Layer_2_Switching_Config_602_u1_1/b_Cisco_n3k_Layer_2_Switching_Config_602_u1_1_chapter_01001.pdf
So we must negate the command as per option D
D seems a better answer to me.
With C, you disable transmitting LLDP infos on Cat9K-1 interface, not on Cat9K-2. And the question is asking about Cat9K-2. And with B, you won't receive any LLDP infos on Cat9K-1 interface, which is overkill.
So D seems a better choice. With it, you're only disabling sending/receiving mgmt address on Cat9K-2.
upvoted 4 times
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