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. WIKIMERIONET
Merion Mertics , ,

CRM

8

:

  1. Cisco

:

  1. EtherChannel

Case #1

,

, , . VLAN 1. , (, / ). , A C Ethernet (10 ). FastEthernet.

 C    Ethernet 0/13

show spanning-tree A C. , C Ethernet 0/13 , FastEthernet 0/14 . . , 10 , 100 . :

  1. , .
  2. , . Ethernet , Fast Ethernet, FastEthernet.

Ethernet 0/13?

 Ethernet 0/13  FastEthernet0/14

, Ethernet 0/13 FastEthernet0/14 . , interface Ethernet 0/13.

,  -     19

, , - 19 ( FastEthernet).

SwitchC(config)#interface Ethernet 0/13
SwitchC(config-if)#no spanning-tree cost 19

cost.

   cost

, cost, , . FastEthernet 0/14 , Ethernet 0/13 100 ( Ethernet). !

: , , , .

Case #2

, . (FastEthernet). A VLAN 10, :

 A

, ... A , FastEthernet 0/17 . , . B , . .

 C, ,      VLAN 10

, A B VLAN 10. C, , VLAN 10. ?

, , C (, , , ).

VLAN 10      C

. VLAN 10 C. , VLAN 10.

   VLAN 10

. , VLAN 10 . , :

  • VLAN 10 .
  • Spanning- VLAN 10.

, VLAN 10 C, , , ? SwitchC(config)#spanning-tree vlan 10

spanning-tree vlan 10

! VLAN 10 ... ! , . , , - , , , . , :

SwitchC(config)#interface fa0/1
SwitchC(config-if)#no spanning-tree vlan 10
SwitchC(config)#

no spanning-tree vlan 10, , . , , , . VLAN 10 ... !

: , .

Case #3

! ... . :

 FastEthernet 0/16   B   C

. , FastEthernet 0/16 B C ? A . , , ? ! ... FastEthernet 0/16 0/17 C , C ID . , , C BPDU .

? , BPDU, . BPDU - MAC access-lists, VLAN access-maps - spanning-tree toolkit?

SwitchA#show vlan access-map
SwitchB#show vlan access-map
SwitchC#show vlan access-map

VLAN access maps.

SwitchA#show access-lists
SwitchB#show access-lists
SwitchC#show access-lists

...

  port security

port security... , ?

 BPDU

- ! BPDU FastEthernet 0/16 0/17 B. - C BPDU B.

SwitchB(config)#interface fa0/16
SwitchB(config-if)#no spanning-tree bpdufilter enable
SwitchB(config-if)#interface fa0/17
SwitchB(config-if)#no spanning-tree bpdufilter enable

BPDU.

FastEthernet 0/16  0/17

, FastEthernet 0/16 0/17 . ... !

: , BPDU .


Case #4

. A VLAN 10. FastEthernet .

show spanning-tree vlan 10

show spanning-tree vlan 10 , . , - B FastEthernet 0/16 . , FastEthernet 0/13 ? , FastEthernet 0/16.

show spanning-tree interface

show spanning-tree interface, spanning-tree . , VLAN 1, FastEthernet 0/13 0/14.

, , , :

      VLAN

-, , VLAN. spanning-tree no spanning-tree vlan X. VLAN 10, FastEthernet 0/16 0/17.

     VLAN 10

, VLAN 10, , . show interfaces switchport, , VLAN 10 FastEthernet 0/13 0/14. . , , VLAN 1.

SwitchB(config)#interface fa0/13
SwitchB(config-if)#switchport mode trunk

SwitchB(config-if)#interface fa0/14
SwitchB(config-if)#switchport mode trunk

, VLAN 10 .

FastEthernet 0/13

, . VLAN 10 FastEthernet 0/13 0/14, , FastEthernet 0/13 . !

: , VLAN , .

, EtherChannel.