Hi Alain, thanks for help
Hear is config,
====================================
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname xxxxx
!
boot-start-marker
boot-end-marker
!
enable password 7 xxxxx
!
username xxxx password 7 xxxxx
no aaa new-model
system mtu routing 1500
vtp mode transparent
ip subnet-zero
!
!
!
crypto pki trustpoint TP-self-signed-3401816704
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3401816704
revocation-check none
rsakeypair TP-self-signed-3401816704
!
!
crypto pki certificate chain TP-self-signed-3401816704
certificate self-signed 01
30820242 308201AB A0030201 02020101 300D0609 2A864886 F70D0101 04050030
***********************
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
vlan 21
!
!
!
interface GigabitEthernet0/1
switchport access vlan xx
switchport mode access
!
interface GigabitEthernet0/2
switchport access vlan xx
switchport mode access
!
interface Vlan1
no ip address
no ip route-cache
!
interface Vlan21
ip address 192.168.xxx.xxx 255.255.255.0
no ip route-cache
!
ip default-gateway 192.168.xxx.xxx
ip http server
ip http secure-server
!
control-plane
!
!
line con 0
exec-timeout 5 0
logging synchronous
login local
line vty 0 4
exec-timeout 5 0
logging synchronous
login local
line vty 5 15
exec-timeout 5 0
logging synchronous
login local
!
========================
# Update
change to
# exec-timeout 0 0
not help!!
Message was edited by: KYAW ZIN OO
#Latest update.
I can login from another switch with stable,
don't know what happen that this issue happen once telnet from server.
