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. :
•
•
•