> настройки клиентских PC покажите.
> Да у рут не нужен, если на одном 3750 находятся

Находятся на одном 3750.
Настройки клиентских PC
192.168.0.10 255.255.255.0 192.168.0.200
для другой подсети
192.168.1.10 255.255.255.0 192.168.1.1

Настройка 3750

Current configuration : 4405 bytes
!
version 12.2
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname Switch
!
enable secret 5 $1$tAiD$1NNjATdnsPbAwsGox1mkY0
!
no aaa new-model
switch 4 provision ws-c3750-48ts
ip subnet-zero
ip routing
!
!
!
!
no file verify auto
spanning-tree mode pvst
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
interface FastEthernet4/0/1
!
interface FastEthernet4/0/2
switchport mode access
!
interface FastEthernet4/0/3
switchport mode access
!
interface FastEthernet4/0/4
switchport mode access
!
interface FastEthernet4/0/5
switchport mode access
!
interface FastEthernet4/0/6
switchport mode access
!
interface FastEthernet4/0/7
switchport mode access
!
interface FastEthernet4/0/8
switchport mode access
!
interface FastEthernet4/0/9
switchport mode access
!
interface FastEthernet4/0/10
switchport mode access
!
interface FastEthernet4/0/11
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/12
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/13
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/14
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/15
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/16
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/17
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/18
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/19
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/20
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/21
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/22
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/23
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/24
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/25
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/26
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/27
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/28
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/29
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/30
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/31
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/32
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/33
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/34
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/35
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/36
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/37
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/38
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/39
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/40
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/41
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/42
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/43
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/44
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/45
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/46
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/47
switchport access vlan 2
switchport mode access
!
interface FastEthernet4/0/48
switchport access vlan 2
switchport mode access
!
interface GigabitEthernet4/0/1
!
interface GigabitEthernet4/0/2
!
interface GigabitEthernet4/0/3
!
interface GigabitEthernet4/0/4
!
interface Vlan1
ip address 192.168.0.200 255.255.255.0
!
interface Vlan2
ip address 192.168.1.1 255.255.255.0
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.0.0
ip http server
!
!
control-plane
!
!
line con 0
line vty 0 4
password p@r0l
login
line vty 5 15
no login
!
!
end