Buy or Renew
Buy or Renew
Cisco + Splunk: It’s a new day for your data. Learn more.
 
cancel
Turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
Showing results for 
Search instead for 
Did you mean: 
cancel
Start a conversation
2876
Views
0
Helpful
3
Replies

Secondary Addresses

Go to solution
kennethsali
Level 1
Level 1

‎05-04-2006 03:10 AM - edited ‎03-03-2019 03:04 AM

Looking to know if a secondary address will automatically become the primary if a primary address also configured on a FastEthernet LAN port is removed, or will it be removed as well?

!

interface FastEthernet0/0

ip address 10.24.216.1 255.255.248.0 secondary

no ip address 10.40.80.1 255.255.248.0

Labels:
0 Helpful
1 Accepted Solution

Accepted Solutions

Go to solution
Harold Ritter
Cisco Employee
Cisco Employee

‎05-04-2006 03:30 AM

The primary can't be removed unless all the secondaries are removed first. If you try to remove the primary, you will get the following message:

R1(config-if)#no ip address 192.168.1.1 255.255.255.0

Must delete secondary before deleting primary

R1(config-if)#

Hope this helps,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México

View solution in original post

0 Helpful
3 Replies 3

Go to solution
Harold Ritter
Cisco Employee
Cisco Employee

‎05-04-2006 03:30 AM

The primary can't be removed unless all the secondaries are removed first. If you try to remove the primary, you will get the following message:

R1(config-if)#no ip address 192.168.1.1 255.255.255.0

Must delete secondary before deleting primary

R1(config-if)#

Hope this helps,

Harold Ritter
Sr Technical Leader
CCIE 4168 (R&S, SP)
harold@cisco.com
México móvil: +52 1 55 8312 4915
Cisco México
Paseo de la Reforma 222
Piso 19
Cuauhtémoc, Juárez
Ciudad de México, 06600
México
0 Helpful

Go to solution
ceo4eva
Level 1
Level 1
In response to Harold Ritter

‎10-20-2019 08:01 AM

When you have a secondary IP and you want to make it the primary, just use the ip address command without secondary and it will make it the primary while getting rid of it as the secondary.

0 Helpful

Go to solution
Nikolaos1313
Level 1
Level 1
In response to ceo4eva

‎01-25-2024 07:51 AM

ok but what about the primary one? what will happen to it? also will i lose connectivity or no?

0 Helpful
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community:

Customers Also Viewed These Support Documents