dk_lab#conf t
Enter configuration commands, one per line. End with CNTL/Z.
dk_lab(config)#vlan 19
dk_lab(config-vlan)#name Web-Backend
dk_lab(config-vlan)#int Gi1/0/13
dk_lab(config-if)#switchport access vlan 19
dk_lab(config-if)#int Gi1/0/14
dk_lab(config-if)#switchport access vlan 19
dk_lab(config-if)#int Gi1/0/15
dk_lab(config-if)#switchport access vlan 19
dk_lab(config-if)#int Gi1/0/16
dk_lab(config-if)#switchport access vlan 19
dk_lab(config-if)#
dk_lab#conf t
Enter configuration commands, one per line. End with CNTL/Z.
dk_lab(config)#vlan 16
dk_lab(config-vlan)#name Servers
dk_lab(config-vlan)#vlan 17
dk_lab(config-vlan)#name Web-Backend
%VLAN #17 and #18 have an identical name: Web-Backend
dk_lab(config-vlan)#name Web-Backends
dk_lab#sh vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi1/0/17, Gi1/0/18, Gi1/0/19
Gi1/0/20, Gi1/0/21, Gi1/0/22
Gi1/0/23, Gi1/0/24, Gi1/0/25
Gi1/0/26, Gi1/0/27, Gi1/0/28
16 Server active Gi1/0/1, Gi1/0/2, Gi1/0/3 Gi1/0/4
17 Web-Backend active Gi1/0/5, Gi1/0/6, Gi1/0/7 Gi1/0/8
18 Distribution active Gi1/0/9, Gi1/0/10, Gi1/0/11 Gi1/0/12
19 Ad-Test active Gi1/0/13, Gi1/0/14, Gi1/0/15 Gi1/0/16
1002 fddi-default act/unsup
DK_Lab_SW#clock set 12:49:00 01 December 2013
DK_Lab_SW#
01:55:14: %SYS-6-CLOCKUPDATE: System clock has been updated from 20:55:14 EST Sun Feb 28 1993 to 12:49:00 EST Sun Dec 1 2013, configured from console by console.
DK_Lab_SW#wr t
Building configuration...
DK_Lab_SW#sh clock
12:51:14.184 EST Sun Dec 1 2013
DK_Lab_SW#
------
DK_Lab_SW(config)#ip subnet-zero
DK_Lab_SW(config)#ip route 0.0.0.0 0.0.0.0 172.20.35.244
DK_Lab_SW(config)#^Z
DK_Lab_SW#
Switch(config)#hostname DK_Lab_SW
DK_Lab_SW(config)#vlan 10
DK_Lab_SW(config-vlan)#name Core
DK_Lab_SW(config-vlan)#vlan 20
DK_Lab_SW(config-vlan)#name DMZ
DK_Lab_SW(config-vlan)#vlan 30
DK_Lab_SW(config-vlan)#name Internet
DK_Lab_SW(config-vlan)#
DK_Lab_SW(config-vlan)#^Z
DK_Lab_SW#
--Validate VLANs were created
DK_Lab_SW#sh vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi2/0/1, Gi2/0/2, Gi2/0/3
Gi2/0/4, Gi2/0/5, Gi2/0/6
Gi2/0/7, Gi2/0/8, Gi2/0/9
Gi2/0/10, Gi2/0/11, Gi2/0/12
Gi2/0/13, Gi2/0/14, Gi2/0/15
Gi2/0/16, Gi2/0/17, Gi2/0/18
Gi2/0/19, Gi2/0/20, Gi2/0/21
Gi2/0/22, Gi2/0/23, Gi2/0/24
Gi2/0/25, Gi2/0/26, Gi2/0/27
Gi2/0/28
10 Core active
20 DMZ active
30 Internet active
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
10 enet 100010 1500 - - - - - 0 0
20 enet 100020 1500 - - - - - 0 0
25 enet 100025 1500 - - - - - 0 0
30 enet 100030 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
DK_Lab_SW#
-----------------------------------------------------------------------------
Assign Interfaces/Ranges of Interfaces to VLAN
-----------------------------------------------------------------------------
dk_Lab_SW#conf t
Enter configuration commands, one per line. End with CNTL/Z.
dk_Lab_SW(config)#vlan 10
dk_Lab_SW(config-vlan)#interface range Gi2/0/1-10
dk_Lab_SW(config-if-range)#switchport access vlan 10
dk_Lab_SW(config-if-range)#no shutdown
dk_Lab_SW(config-if-range)#exit
dk_Lab_SW(config)#exit
dk_Lab_SW#
dk_Lab_SW(config)#vlan 20
dk_Lab_SW(config-vlan)#interface range Gi2/0/11-16
dk_Lab_SW(config-if-range)#switchport access vlan 20
dk_Lab_SW(config-if-range)#no shutdown
dk_Lab_SW(config-if-range)#^Z
dk_Lab_SW#
dk_Lab_SW#config t
Enter configuration commands, one per line. End with CNTL/Z.
dk_Lab_SW(config)#vlan 30
dk_Lab_SW(config-vlan)#interface range Gi2/0/17-24
dk_Lab_SW(config-if-range)#switchport access vlan 30
dk_Lab_SW(config-if-range)#no shutdown
dk_Lab_SW(config-if-range)#^Z
dk_Lab_SW#
dk_Lab_SW#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]
dk_Lab_SW#
dk_Lab_SW#sh vlan
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
1 default active Gi2/0/25, Gi2/0/26, Gi2/0/27
Gi2/0/28
10 Core active Gi2/0/1, Gi2/0/2, Gi2/0/3
Gi2/0/4, Gi2/0/5, Gi2/0/6
Gi2/0/7, Gi2/0/8, Gi2/0/9
Gi2/0/10
20 DMZ active Gi2/0/11, Gi2/0/12, Gi2/0/13
Gi2/0/14, Gi2/0/15, Gi2/0/16
30 Internet active Gi2/0/17, Gi2/0/18, Gi2/0/19
Gi2/0/20, Gi2/0/21, Gi2/0/22
Gi2/0/23, Gi2/0/24
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1 enet 100001 1500 - - - - - 0 0
10 enet 100010 1500 - - - - - 0 0
VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
20 enet 100020 1500 - - - - - 0 0
30 enet 100030 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0
Remote SPAN VLANs
------------------------------------------------------------------------------
Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------
dk_Lab_SW#
-----ADDING IP ADDRESS TO VLANs----------------------------------------------
dk_Lab_SW#conf t
Enter configuration commands, one per line. End with CNTL/Z.
dk_Lab_SW(config)#interface vlan 10
dk_Lab_SW(config-if)#
00:30:59: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to down
dk_Lab_SW(config-if)#ip address 172.20.35.243 255.255.255.248
dk_Lab_SW(config-if)#description Landmark Core
dk_Lab_SW(config-if)#no shutdown
dk_Lab_SW(config-if)#^Z
dk_Lab_SW#
dk_Lab_SW#conf t
Enter configuration commands, one per line. End with CNTL/Z.
dk_Lab_SW(config)#interface vlan 20
00:37:15: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to down
dk_Lab_SW(config-if)#ip address 10.210.4.49 255.255.255.240
dk_Lab_SW(config-if)#description Landmark DMZ
dk_Lab_SW(config-if)#no shutdown
dk_Lab_SW(config-if)#^Z
dk_Lab_SW#
dk_Lab_SW#conf t
Enter configuration commands, one per line. End with CNTL/Z.
dk_Lab_SW(config)#int vlan 30
00:43:39: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan30, changed state to downs
dk_Lab_SW(config-if)#ip address 216.118.190.11 255.255.255.128
dk_Lab_SW(config-if)# description Landmark Internet
dk_Lab_SW(config-if)#no shutdown
dk_Lab_SW(config-if)#exit
dk_Lab_SW(config)#exit
dk_Lab_SW#
dk_Lab_SW#copy running-config st
dk_Lab_SW#copy running-config startup-config
Destination filename [startup-config]?
Building configuration...
[OK]
dk_Lab_SW#
--------------------------------------------------------------------------------------------------
Validate VLAN IPs - Note for protocol to turn up at least one Interface in the VLAN needs to be plugged in
dk_Lab_SW#sh ip int brief
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES unset up down
Vlan10 172.20.35.243 YES manual up down
Vlan20 10.210.4.49 YES manual up down
Vlan30 216.118.190.11 YES manual up down
GigabitEthernet2/0/1 unassigned YES unset down down
GigabitEthernet2/0/2 unassigned YES unset down down
GigabitEthernet2/0/3 unassigned YES unset down down
GigabitEthernet2/0/4 unassigned YES unset down down
GigabitEthernet2/0/5 unassigned YES unset down down
GigabitEthernet2/0/6 unassigned YES unset down down
GigabitEthernet2/0/7 unassigned YES unset down down
GigabitEthernet2/0/8 unassigned YES unset down down
GigabitEthernet2/0/9 unassigned YES unset down down
Here I plugged in my laptop on GigabitEthernet2/0/5 on the switch (note VLAN 10 Came up and Gi2/0/5 also came up)
--------------------------------------------------------------------------------------------------
dk_Lab_SW#sh ip int brief
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES unset up down
Vlan10 172.20.35.243 YES manual up up
Vlan20 10.210.4.49 YES manual up down
Vlan30 216.118.190.11 YES manual up down
GigabitEthernet2/0/1 unassigned YES unset down down
GigabitEthernet2/0/2 unassigned YES unset down down
GigabitEthernet2/0/3 unassigned YES unset down down
GigabitEthernet2/0/4 unassigned YES unset down down
GigabitEthernet2/0/5 unassigned YES unset up up
GigabitEthernet2/0/6 unassigned YES unset down down
verify vlan interfaces
dk_Lab_SW#sh ip int vlan 10
Vlan10 is up, line protocol is down
Internet address is 172.20.35.243/29
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is disabled
IP CEF switching is disabled
IP Null turbo vector
IP Null turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Policy routing is disabled
Network address translation is disabled
BGP Policy Mapping is disabled
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
dk_Lab_SW#
dk_Lab_SW#
dk_Lab_SW#sh ip int vlan 20
Vlan20 is up, line protocol is down
Internet address is 10.210.4.49/28
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is disabled
IP CEF switching is disabled
IP Null turbo vector
IP Null turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Policy routing is disabled
Network address translation is disabled
BGP Policy Mapping is disabled
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
dk_Lab_SW#
dk_Lab_SW#
dk_Lab_SW#sh ip int vlan 30
Vlan30 is up, line protocol is down
Internet address is 216.118.190.11/25
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is disabled
IP CEF switching is disabled
IP Null turbo vector
IP Null turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Probe proxy name replies are disabled
Policy routing is disabled
Network address translation is disabled
BGP Policy Mapping is disabled
WCCP Redirect outbound is disabled
WCCP Redirect inbound is disabled
WCCP Redirect exclude is disabled
dk_Lab_SW#
dk_Lab_SW# sh vlan summary
Number of existing VLANs : 8
Number of existing VTP VLANs : 8
Number of existing extended VLANs : 0
dk_Lab_SW#sh vtp status
VTP Version : running VTP1 (VTP2 capable)
Configuration Revision : 0
Maximum VLANs supported locally : 1005
Number of existing VLANs : 8
VTP Operating Mode : Transparent
VTP Domain Name : LanSrv
VTP Pruning Mode : Disabled
VTP V2 Mode : Disabled
VTP Traps Generation : Disabled
MD5 digest : 0x8D 0x3B 0xF7 0x3F 0x9B 0x51 0x99 0xF7
Configuration last modified by 0.0.0.0 at 0-0-00 00:00:00
dk_Lab_SW#
=====
Additional Info
It is because of Autostate is implemented on CatOS and IOS Cisco based switches by default. On some CatOS platforms, this feature can be disabled in
order to allow redundancy in special scenarios. On IOS based switches, this feature cannot be disabled.
The router VLAN interfaces have to fulfill the following general conditions to be up/up:
* VLAN exists and is in active status on the switch VLAN database.
* VLAN interface exists on the router and is not administratively down.
* At least one L2 (access port or trunk) port exists and has a link up on this VLAN. The latest implementation of the autostate feature allows
synchronization to Spanning-Tree Protocol (STP) port status.A VLAN interface will be brought up after the L2 port has had time to converge (that is,
transition from listening-learning to forwarding). This will prevent routing protocols and other features from using the VLAN interface as if it were
fully operational. This also prevents other problems, such as routing black holes, from occurring.
* At least one L2 (access port or trunk) port is in spanning-tree forwarding state on the VLAN.
NOTE at least one device needs to be plug in the VLAN before the protocol is turned up!
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