D-Link DES-3326 Bedienungsanleitung Seite 45

DES-3326 Layer 3 Fast Ethernet Switch User's Guide
Setting up IP Interfaces
The Layer 3 switch allows ranges of IP addresses (OSI layer 3) to be assigned to VLANs (OSI layer 2).
Each VLAN must be configured prior to setting up the corresponding IP interface. An IP addressing
scheme must then be established, and implemented when the IP interfaces are set up on the switch.
An example is presented below:
In this case, 6 IP interfaces are required, so a CIDR notation of 10.32.0.0/11 (or a 11-bit) addressing
scheme will work.
11111111.11100000.00000000.00000000 (binary) or 255.224.0.0 (decimal).
Using a 10.xxx.xxx.xxx IP address notation, the above example would give 6 network addresses and 6
subnets.
Any IP address from the allowed range of IP addresses for each subnet can be chosen as an IP address
for an IP interface on the switch.
For this example, we have chosen the next IP address above the network address:
# of Subnet Mask
Bits
2 255.255.192
3 255.255.224.0
4 255.255.240.0
5 255.255.248.0
6 255.255.252.0
7 255.255.254.0
8 255.255.255.0
9 255.255.255.128
10 255.255.255.192
11 255.255.255.224
12 255.255.255.240
13 255.255.255.248
14 255.255.255.252
Table 5-6. Class B Subnet Masks
# of Subnet Mask
Bits
2 255.255.255.192
3 255.255.255.224
4 255.255.255.240
5 255.255.255.248
6 255.255.255.252
Table 5-7. Class C Subnet Masks
VLAN Name VID
System (default)
Engineering
Marketing
Finance
Sales
Backbone
Table 5-8. VLAN Example – Assigned Ports
This addressing
CIDR # of # of
Notation Subnets Hosts
/18 2 16382
/19 6 8190
/20 14 4094
/21 30 2046
/22 62 1022
/23 126 510
/24 254 254
/25 510 126
/26 1022 62
/27 2046 30
/28 4094 14
/29 8190 6
/30 16382 2
CIDR # of # of
Notation Subnets Hosts
/26 2 62
/27 6 30
/28 14 14
/29 30 6
/30 62 2
Switch Ports
1 5, 6, 7, 8, 21, 22, 23, 24
2 9, 10, 11, 12
3 13, 14, 15, 16
4 17, 18, 19, 20
5 1, 2, 3, 4
6 25, 26
scheme will
45
Total
Hosts
32764
49140
57316
61380
63364
64260
64516
64260
63364
61380
57316
49140
32764
Total
Hosts
124
180
196
180
124
give a subnet mask of