Difference between revisions of "VLAN Cisco IOS"

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m (→‎Adding a range of ports to a VLAN)
m (→‎Show VLAN Field Desriptions)
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1005 trnet-default                    active
 
1005 trnet-default                    active
 
</pre>
 
</pre>
 +
 +
 
== Show VLAN Field Desriptions ==
 
== Show VLAN Field Desriptions ==
 
{|border=1 ;style="margin: 0 auto; text-align: center;cellpadding="5" cellspacing="0"
 
{|border=1 ;style="margin: 0 auto; text-align: center;cellpadding="5" cellspacing="0"
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|STEHops || Maximum number of hops for spanning tree explorer frames
 
|STEHops || Maximum number of hops for spanning tree explorer frames
 
|}
 
|}
 +
== Show interfaces ==
 +
A quick summary of all ports and their status
 +
<pre>
 +
SW2#show interfaces status
 +
 +
Port      Name              Status      Vlan      Duplex  Speed Type
 +
....
 +
Fa0/8                        notconnect  102          auto  auto 10/100BaseTX
 +
Fa0/9                        notconnect  102          auto  auto 10/100BaseTX
 +
Fa0/10                      notconnect  102          auto  auto 10/100BaseTX
 +
....
 +
</pre>
 +
== show switchport status ==
 +
<pre>
 +
SW2#show interfaces fastEthernet 0/10 switchport
 +
Name: Fa0/10
 +
Switchport: Enabled
 +
Administrative Mode: static access
 +
Operational Mode: down
 +
Administrative Trunking Encapsulation: dot1q
 +
Negotiation of Trunking: Off
 +
Access Mode VLAN: 102 (Students)
 +
Trunking Native Mode VLAN: 1 (default)
 +
Administrative Native VLAN tagging: enabled
 +
Voice VLAN: none
 +
Administrative private-vlan host-association: none
 +
Administrative private-vlan mapping: none
 +
Administrative private-vlan trunk native VLAN: none
 +
Administrative private-vlan trunk Native VLAN tagging: enabled
 +
Administrative private-vlan trunk encapsulation: dot1q
 +
Administrative private-vlan trunk normal VLANs: none
 +
Administrative private-vlan trunk private VLANs: none
 +
Operational private-vlan: none
 +
Trunking VLANs Enabled: ALL
 +
Pruning VLANs Enabled: 2-1001
 +
Capture Mode Disabled
 +
Capture VLANs Allowed: ALL
 +
 +
Protected: false
 +
Unknown unicast blocked: disabled
 +
Unknown multicast blocked: disabled
 +
Appliance trust: none
 +
</pre>
  
 
= Adding VLAN's =
 
= Adding VLAN's =

Revision as of 07:53, 28 April 2009

Show commands

Switch1#sh vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/1, Fa0/2, Fa0/3, Fa0/4
                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8
                                                Fa0/9, Fa0/10, Fa0/11, Fa0/12
                                                Fa0/13, Fa0/14, Fa0/15, Fa0/16
                                                Fa0/17, Fa0/18, Fa0/19, Fa0/20
                                                Fa0/21, Fa0/22, Fa0/23, Fa0/24
                                                Gi0/1
1002 fddi-default                     active
1003 token-ring-default               active
1004 fddinet-default                  active
1005 trnet-default                    active


Show VLAN Field Desriptions

IPv4 Multicast Address groups
Field Description
VLAN VLAN number
Name Name of the VLAN, if configured
Status Status of the VLAN (Active or suspended)
Ports Ports taht belong to the VLAN
Type Media type of the VLAN
SAID Security Association ID value of the VLAN
MTU Maximum Transfer Unit of the VLAN
Parent Parent VLAN if existing
RingNo Ring Number of the VLAN, if applicable
BrdgNo Brudge number of the VLAN, if applicable
STP Spanning Tree Protocol type used on the VLAN
BrdgMode Bridging mode for this VLAN
Trans1 Translation bridge 1
AREHops Maximum number of hops for all-routers explorer frames
STEHops Maximum number of hops for spanning tree explorer frames

Show interfaces

A quick summary of all ports and their status 

SW2#show interfaces status

Port      Name               Status       Vlan       Duplex  Speed Type
....
Fa0/8                        notconnect   102          auto   auto 10/100BaseTX
Fa0/9                        notconnect   102          auto   auto 10/100BaseTX
Fa0/10                       notconnect   102          auto   auto 10/100BaseTX
....

show switchport status

SW2#show interfaces fastEthernet 0/10 switchport
Name: Fa0/10
Switchport: Enabled
Administrative Mode: static access
Operational Mode: down
Administrative Trunking Encapsulation: dot1q
Negotiation of Trunking: Off
Access Mode VLAN: 102 (Students)
Trunking Native Mode VLAN: 1 (default)
Administrative Native VLAN tagging: enabled
Voice VLAN: none
Administrative private-vlan host-association: none
Administrative private-vlan mapping: none
Administrative private-vlan trunk native VLAN: none
Administrative private-vlan trunk Native VLAN tagging: enabled
Administrative private-vlan trunk encapsulation: dot1q
Administrative private-vlan trunk normal VLANs: none
Administrative private-vlan trunk private VLANs: none
Operational private-vlan: none
Trunking VLANs Enabled: ALL
Pruning VLANs Enabled: 2-1001
Capture Mode Disabled
Capture VLANs Allowed: ALL

Protected: false
Unknown unicast blocked: disabled
Unknown multicast blocked: disabled
Appliance trust: none

Adding VLAN's

The VLAN configuration is stored in a file named VLAN.DAT 

Switch1#dir
Directory of flash:/

    2  -rwx         128   Mar 26 2007 13:58:48  layout.text
    3  -rwx     2888547   Mar 01 1993 01:16:05  c2950-i6q4l2-mz.121-13.EA1.bin
    5  -rwx         616   Apr 27 2009 12:40:25  vlan.dat
    6  -rwx        1663   Mar 01 1993 00:05:49  config.backup-1.2
    7  drwx         832   Mar 04 1993 23:52:10  html
   21  -rwx         109   Mar 01 1993 00:04:30  info
   22  -rwx         109   Mar 01 1993 00:04:30  info.ver
    8  -rwx        3727   Mar 22 2009 10:12:56  config.text
   24  -rwx         306   Mar 01 1993 00:03:48  env_vars
   25  -rwx      880640   Mar 08 1993 22:39:07  html2.tar
   26  -rwx          47   Mar 22 2009 10:12:56  private-config.text

7741440 bytes total (1981952 bytes free)

Adding VLAN's from configure mode

To add VLAN's from configure mode is recomended. 

Switch1#configure termi
Switch1#configure terminal
Enter configuration commands, one per line.  End with CNTL/Z.
Switch1(config)#vlan 100
Switch1(config-vlan)#name Admin
Switch1(config-vlan)#vlan 101
Switch1(config-vlan)#name Sales
Switch1(config-vlan)#vlan 102
Switch1(config-vlan)#name Students
Switch1(config-vlan)#^Z
Switch1#sh vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/1, Fa0/2, Fa0/3, Fa0/4
                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8
                                                Fa0/9, Fa0/10, Fa0/11, Fa0/12
                                                Fa0/13, Fa0/14, Fa0/15, Fa0/16
                                                Fa0/17, Fa0/18, Fa0/19, Fa0/20
                                                Fa0/21, Fa0/22, Fa0/23, Fa0/24
                                                Gi0/1
100  Admin                            active
101  Sales                            active
102  Students                         active
1002 fddi-default                     active
1003 token-ring-default               active
1004 fddinet-default                  active
1005 trnet-default                    active

Adding VLAN's from database mode

You can add VLAN's from vlan database 

Switch1#vlan database
% Warning: It is recommended to configure VLAN from config mode,
  as VLAN database mode is being deprecated. Please consult user
  documentation for configuring VTP/VLAN in config mode.
Switch1(vlan)#vlan 100 name Admin
VLAN 100 added:
    Name: Admin
Switch1(vlan)#vlan 101 name Sales
VLAN 101 added:
    Name: Sales
Switch1(vlan)#vlan 102 name Students
VLAN 102 added:
    Name: Students
Switch1(vlan)#exit
APPLY completed.
Exiting....
Switch1#sh vlan brief

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Fa0/1, Fa0/2, Fa0/3, Fa0/4
                                                Fa0/5, Fa0/6, Fa0/7, Fa0/8
                                                Fa0/9, Fa0/10, Fa0/11, Fa0/12
                                                Fa0/13, Fa0/14, Fa0/15, Fa0/16
                                                Fa0/17, Fa0/18, Fa0/19, Fa0/20
                                                Fa0/21, Fa0/22, Fa0/23, Fa0/24
                                                Gi0/1
100  Admin                            active
101  Sales                            active
102  Students                         active
1002 fddi-default                     active
1003 token-ring-default               active
1004 fddinet-default                  active
1005 trnet-default                    active

Access Ports

Access Ports are ports that are connected to specific vlans.

Adding a port statically to a VLAN

To put fastethernet 0/7 port in VLAN 102, use the following commands. 

Switch1#conf t
Enter configuration commands, one per line.  End with CNTL/Z.
Switch1(config)#interface fastethernet 0/7
Switch1(config-if)#switchport mode access
Switch1(config-if)#switchport access vlan 102

Adding a range of ports to a VLAN

To put fastethernet 0/8, 0/9, 0/12, 0/13, 0/14 and 0/22 in VLAN 102 

Switch1(config)#interface range fastEthernet 0/8 - 14, fastEthernet 0/22
Switch1(config-if-range)#switchport mode access
Switch1(config-if-range)#switchport access vlan 102

To view ports in VLAN Students 

Switch1#sh vlan name Students

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
102  Students                         active    Fa0/7, Fa0/8, Fa0/9, Fa0/10
                                                Fa0/11, Fa0/12, Fa0/13, Fa0/14
                                                Fa0/22, Gi0/2

VLAN Type  SAID       MTU   Parent RingNo BridgeNo Stp  BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
102  enet  100102     1500  -      -      -        -    -        0      0

Remote SPAN VLAN
----------------
Disabled

Primary Secondary Type              Ports
------- --------- ----------------- ------------------------------------------
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