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TOPIC: Port Security on Switch - Sticky MAC-Address Problem

Port Security on Switch - Sticky MAC-Address Problem 9 years 3 weeks ago #31106

Hey All, Hi
Before writing my question, here's the output from the Switch:


Switch#show running-config
(Showing only relevant Port)
[code:1]
Building configuration...

Current configuration : 1306 bytes
!
version 12.1
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch
!
!
ip subnet-zero
!
!
spanning-tree mode pvst
no spanning-tree optimize bpdu transmission
spanning-tree extend system-id
!
!
!
!
interface FastEthernet0/21
switchport mode access
switchport port-security
switchport port-security mac-address sticky
switchport port-security mac-address sticky 001f.d0e7.9d31
!
interface Vlan1
no ip address
no ip route-cache
shutdown
!
ip http server
!
line con 0
logging synchronous
line vty 0 4
login
line vty 5 15
login
!
mac-address-table aging-time 10
!
end
[/code:1]
_________________________________
Switch#show port-security interface fastEthernet 0/21
[code:1]
Port Security : Enabled
Port Status : Secure-up
Violation Mode : Shutdown
Aging Time : 0 mins
Aging Type : Absolute
SecureStatic Address Aging : Disabled
Maximum MAC Addresses : 1
Total MAC Addresses : 1
Configured MAC Addresses : 0
Sticky MAC Addresses : 1
Last Source Address : 0000.0000.0000
Security Violation Count : 0
[/code:1]
_________________________________
Switch#show mac-address-table dynamic
[code:1]
Mac Address Table

Vlan Mac Address Type Ports
----


All 000b.5fae.71c0 STATIC CPU
All 0100.0ccc.cccc STATIC CPU
All 0100.0ccc.cccd STATIC CPU
All 0100.0cdd.dddd STATIC CPU
1 0000.0c92.54cf DYNAMIC Fa0/9
1 0010.7b3a.95f8 DYNAMIC Fa0/12
1 001f.d0e7.9d31 STATIC Fa0/21
Total Mac Addresses for this criterion: 7
[/code:1]

My Question is this:
Check these out again
[code:1]
(Quote1)switchport port-security mac-address sticky 001f.d0e7.9d31
(Quote2)Last Source Address : 0000.0000.0000
(Quote3)1 001f.d0e7.9d31 STATIC Fa0/21
[/code:1]

Why is (Quote2) showing Last Source Address as 0000.0000.0000? I did the same thing on Packet Tracer 5.1 and it is showing the sticky MAC-ADDRESS 001f.d0e7.9d31 in place of 0000.0000.0000 (which it should).

Any problem with the Switch?

Re: Port Security on Switch - Sticky MAC-Address Problem 9 years 3 weeks ago #31110

  • S0lo
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hmmm, I tried it and it works with me on both packet tracer and my 2950 switch. You are right it should be working!!, got no idea why it doesn't :?

Did you by any chance reload the switch before issuing show port-security interface fastEthernet 0/21. The "Last Source Address" would not survive a restart/reload.

Re: Port Security on Switch - Sticky MAC-Address Problem 9 years 3 weeks ago #31120

No I didn't reloaded the Switch .... Looks like there gotta be some problem with the Switch IOS....

Re: Port Security on Switch - Sticky MAC-Address Problem 9 years 3 weeks ago #31122

  • S0lo
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Looks like there gotta be some problem with the Switch IOS....


Very possible, getting the latest IOS (if it's not already there) might help.
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