Internet |
NAT |
|
Srv1 |
|
Srv2 |
|
Srv3 |
|
|
|||
|
|
|
|
|
|
|
|
|
A ( |
) |
||
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
1 2 |
|
3 4 5 6 7 8 9 … |
D |
|||||
|
|
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
B |
|
|
|
|
|
|
|
|
|
C |
|
|
|
|
|
|
|
|
|
|
|
|
||
1 2 3 4 5 … 
1 2 3 4 5 6 … 
1 2 3 4 5 6 …
|
A B C D … |
E F G H I J |
|
L M N O P |
|
|
|
|
E |
1) |
(A - U) |
|
. |
1 2 3 4 5 … |
2) |
(A - U) |
|
|
|
.
3) |
- DES-3526. |
|
|
Q R S T U |
4) |
IP- |
( |
, |
).
A (
)
config traffic_segmentation 1-4 forwarding_list 1-26 config traffic_segmentation 5 forwarding_list 1-5 config traffic_segmentation 6 forwarding_list 1-4,6 config traffic_segmentation 7 forwarding_list 1-4,7
(
)
B, C, D, E,… ( 
)
config traffic_segmentation 1 forwarding_list 1-26 config traffic_segmentation 2-24 forwarding_list 1
VLAN
•
802.1q VLAN
•
VLAN 
, 
.
• 
802.1q (
VLAN)
•
IGMP snooping
•
VLAN 
4094.
•
, 
VLAN.
•
VLAN 
.
•
IGMP snooping.
•
. 
VLAN.
• 
(
)
802.1d (STP)
802.1w (RSTP)
802.1s (MSTP)
Spanning Tree?
•
•
:
•IEEE 802.1d Spanning Tree Protocol, STP
•IEEE 802.1w Rapid Spanning Tree Protocol, RSTP
•IEEE 802.1s Multiple Spanning Tree Protocol, MSTP
(L2), |
|
, |
|
1 |
|
2 |
3 |
|
|
||
: |
|
|
L2, VLAN |
, |
Spanning Tree |
. |
|
: |
L2 Ethernet |
. |
, |
|
|
(Broadcast Storm). |
|
Spanning Tree
: 
Spanning Tree (STP, RSTP, MSTP) 
.
Spanning Tree |
|
|
X |
|
, |
|
. |
, |
Spanning Tree |
. |
|
IEEE 802.1d, STP
STP (802.1d):
1. 
(Root Bridge). 
ID 
. 
LAN.
2. 
(Root Port) 
. 
(Root Path Cost) 
. 
.
3.
(Designated Port) 
LAN.
, 
LAN 
, 
.
LAN 
.
4.
, 
.
BPDU 
BPDU 
, 
, 
Ethernet. 
, 
STP. 
:
•
•
•