i cant disable interface on cisco router

[faithful4u]

im getting nvi0 interface with assigned ip address tht i assigned to vlan1, i want to disable nvi0 but i cant login... can you please explain me what is the purpose of this interface and why im getting vlan1 ip there.
thank you.

NAS-Gents#sh ip interface brief
Interface IP-Address OK? Method Status Prot
ocol
FastEthernet0 unassigned YES unset up down

FastEthernet1 unassigned YES unset up up

FastEthernet2 unassigned YES unset up down

FastEthernet3 unassigned YES unset up down

ATM0 unassigned YES NVRAM up up

Vlan1 192.168.1.101 YES NVRAM up up

NVI0 192.168.1.101 YES unset up up

Dialer1 178.61.180.74 YES IPCP up up

Virtual-Access1 unassigned YES unset up up

Virtual-Access2 unassigned YES unset up down

Virtual-Access3 unassigned YES unset up up

--More--

 

[dgrizzard]

http://www.cisco.com/en/US/docs/ios/12_3t/12_3t14/feature/guide/gtnatvi.html

 

[nyy1023]

can you post the vlan interface information?

 

[faithful4u]

Badar#sh interface vlan1
Vlan1 is up, line protocol is up
Hardware is EtherSVI, address is 001d.7088.9e89 (bia 001d.7088.9e89)
Internet address is 192.168.1.254/24
MTU 1500 bytes, BW 100000 Kbit, DLY 100 usec,
reliability 255/255, txload 2/255, rxload 1/255
Encapsulation ARPA, loopback not set
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:01, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/100 (size/max)
5 minute input rate 215000 bits/sec, 157 packets/sec
5 minute output rate 1004000 bits/sec, 162 packets/sec
57450094 packets input, 547834740 bytes, 0 no buffer
Received 565122 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
71184758 packets output, 236190764 bytes, 0 underruns
0 output errors, 1 interface resets
0 output buffer failures, 0 output buffers swapped out
Badar#

 

[nyy1023]

sorry, meant the vlan config

CCNA, CCNP

 

[faithful4u]

Current configuration : 2893 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Badar
!
boot-start-marker
boot-end-marker
!
no logging buffered
no logging console
enable secret
!
no aaa new-model
clock timezone Kuwait 3
!
!
dot11 syslog
ip cef
no ip dhcp use vrf connected
ip dhcp excluded-address 192.168.1.1
ip dhcp excluded-address 192.168.1.254
!
ip dhcp pool CLIENT
import all
network 192.168.1.0 255.255.255.0
dns-server 62.215.6.51 62.215.6.52 8.8.8.8
default-router 192.168.1.254
lease 30
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
no ip domain lookup
!
!
!
username Router password 7
!
!
archive
log config
hidekeys
!
!
!
!
!
interface ATM0
no ip address
no ip mroute-cache
atm vc-per-vp 128
no atm ilmi-keepalive
pvc 0/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
pvc 1/100
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
dsl operating-mode auto
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Vlan1
ip address 192.168.1.254 255.255.255.0
ip access-group aaa in
ip access-group aaa out
ip nat inside
ip virtual-reassembly
no ip mroute-cache
hold-queue 100 out
!
interface Dialer1
ip address negotiated
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname FT71006338
ppp chap password 0 q6334r72
ppp pap sent-username FT71006338 password
ppp ipcp dns request
ppp ipcp wins request
hold-queue 224 in
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 Dialer1
!
ip http server
ip http access-class 23
ip http authentication local
no ip http secure-server
ip http max-connections 4
ip http timeout-policy idle 600 life 86400 requests 10000
ip nat inside source list 102 interface Dialer1 overload
!
ip access-list extended lan-in
permit ip 192.168.1.0 0.0.0.255 192.168.1.0 0.0.0.255
permit ip host 192.168.1.2 any
permit ip host 192.168.1.3 any
!
access-list 23 permit 192.168.1.0 0.0.0.255
access-list 101 deny ip 0.0.0.101 255.255.255.0 any
access-list 102 permit ip 192.168.1.0 0.0.0.255 any
dialer-list 1 protocol ip permit
snmp-server community contact RW
snmp-server community home RO
snmp-server enable traps snmp authentication linkdown linkup coldstart warmstart
snmp-server enable traps tty
!
!
!
control-plane
!
!
line con 0
exec-timeout 120 0
login local
no modem enable
stopbits 1
line aux 0
line vty 0 4
exec-timeout 120 0
login local
length 0
!
scheduler max-task-time 5000
!
webvpn context Default_context
ssl authenticate verify all
!
no inservice
!
end

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