probleme transfert switch 3Com

[Jonathan]

J'ai un switch 3Com 3250, relié à un cisco 3560 (avec un lien trunk).
J'ai plusieurs Vlan sur le 3Com. Lorsque je transfère un fichier en deux postes sur le même Vlan, tout va bien (par exemple entre deux postes du Vlan 3 : transfert à 6 Mo/s).
Mais dès que je transfert un fichier d'un poste du Vlan 2, vers un poste du Vlan 3, le taux de transfert chute (200 Ko/s au maximum).

Et ce n'est pas un problème d'ACL.

Si quelqu'un a une idée de l'origine du problème. Merci d'avance.

Je vous mets le fichier de configuration du Cisco 3560 en dessous

spanning-tree mode pvst
spanning-tree extend system-id
spanning-tree vlan 1-6,10,20,50-51,99 priority 4096
!
vlan internal allocation policy ascending
!
class-map match-any voip
match access-group 150
class-map match-all Oracle
match access-group 122
class-map match-all SQL
match access-group 123
class-map match-all Lotus
match access-group 121
!
!
policy-map voip
class voip
set dscp ef
policy-map QOSDATA
class Lotus
police 1000000 1000000 exceed-action drop
class Oracle
police 1000000 1000000 exceed-action drop
class SQL
police 1000000 1000000 exceed-action drop
!
!
interface FastEthernet0/1
description pour administration
switchport access vlan 51
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/2
description vers SWITCH 01A
switchport trunk encapsulation dot1q
switchport mode trunk
service-policy input QOSDATA
!
interface FastEthernet0/3
description vers SWITCH 02A
switchport trunk encapsulation dot1q
switchport mode trunk
service-policy input QOSDATA
duplex full
speed 100
!
interface FastEthernet0/4
description vers SWITCH 02B
switchport mode access
service-policy input QOSDATA
!
interface FastEthernet0/5
description vers SWITCH 03B
switchport mode access
service-policy input QOSDATA
!
interface FastEthernet0/6
description vers SWITCH 03A
switchport trunk encapsulation dot1q
switchport mode trunk
service-policy input QOSDATA
!
interface FastEthernet0/7
description vers PC ADMIN
switchport access vlan 2
switchport mode access
service-policy input QOSDATA
!
interface FastEthernet0/8
description vers PC ADMIN2
switchport access vlan 2
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/9
switchport access vlan 3
switchport mode access
service-policy input QOSDATA
!
interface FastEthernet0/10
description vers SWITCH 3COM
switchport access vlan 3
switchport trunk encapsulation dot1q
switchport mode trunk
service-policy input QOSDATA
!
interface FastEthernet0/11
switchport access vlan 3
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/12
description vers SWITCH GIGABIT
switchport access vlan 4
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/13
description vers SERVEUR
switchport access vlan 5
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/14
description vers WIFI
switchport access vlan 5
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/15
description vers duplicateur
switchport access vlan 5
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/16
description vers HP8150
switchport access vlan 5
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/17
description vers TAILLY 8104
switchport access vlan 5
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/18
switchport access vlan 5
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/19
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/20
switchport mode access
service-policy input QOSDATA
spanning-tree portfast
!
interface FastEthernet0/21
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/22
description vers PABX LAN
switchport access vlan 5
switchport mode access
spanning-tree portfast
!
interface FastEthernet0/23
description vers PABX VOIP
switchport mode access
switchport voice vlan 50
service-policy input voip
spanning-tree portfast
!
interface FastEthernet0/24
description vers Chambre
switchport trunk encapsulation dot1q
switchport mode trunk
load-interval 30
duplex full
speed 10
!
interface GigabitEthernet0/1
!
interface GigabitEthernet0/2
!
interface Vlan1
description connexion vers PC ETUDIANT
ip address 192.168.1.254 255.255.255.0
ip access-group 101 in
ip helper-address 192.168.5.253
ip helper-address 192.168.4.252
!
interface Vlan2
description CONNEXION VERS PC ADMIN
ip address 192.168.2.254 255.255.255.0
ip access-group 102 in
ip helper-address 192.168.5.253
!
interface Vlan3
description CONNEXION VERS PC PERSONNELLE
ip address 192.168.3.254 255.255.255.0
ip access-group 103 in
ip helper-address 192.168.5.253
ip helper-address 192.168.4.252
!
interface Vlan4
description CONNEXION VERS RESSOURCE PARTAGER
ip address 192.168.4.254 255.255.255.0
ip access-group 104 in
ip helper-address 192.168.5.253
!
interface Vlan5
description CONNEXION VERS RESSOURCE NON PARTAGER
ip address 192.168.5.254 255.255.255.0
ip access-group 105 in
ip helper-address 192.168.4.252
!
interface Vlan20
description CONNEXION VERS Chambre
ip address 192.168.0.16 255.255.255.0
!
interface Vlan50
description CONNEXION VERS VOIP
ip address 192.168.50.254 255.255.255.0
ip access-group 107 in
!
interface Vlan51
description RESEAU ADMIN
ip address 192.168.51.254 255.255.255.0
ip access-group 108 in
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.4.4
ip http server
ip http access-class 10
!
access-list 10 permit 192.168.0.71
access-list 10 permit 192.168.2.0 0.0.0.255
access-list 10 permit 192.168.51.0 0.0.0.255
access-list 101 remark vlan 1
access-list 101 deny ip 192.168.1.0 0.0.0.255 192.168.2.0 0.0.0.255
access-list 101 deny ip 192.168.1.0 0.0.0.255 192.168.3.0 0.0.0.255
access-list 101 deny ip 192.168.1.0 0.0.0.255 192.168.50.0 0.0.0.255
access-list 101 deny ip 192.168.1.0 0.0.0.255 192.168.51.0 0.0.0.255
access-list 101 permit ip 192.168.1.0 0.0.0.255 host 192.168.0.71
access-list 101 permit ip 192.168.1.0 0.0.0.255 192.168.4.0 0.0.0.255
access-list 101 permit ip 192.168.1.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 101 permit ip 192.168.1.0 0.0.0.255 host 192.168.5.253
access-list 101 permit ip 192.168.1.0 0.0.0.255 any
access-list 102 remark vlan 2
access-list 102 deny ip 192.168.2.0 0.0.0.255 192.168.50.0 0.0.0.255
access-list 102 permit ip 192.168.2.0 0.0.0.255 any
access-list 103 remark vlan 3
access-list 103 deny ip 192.168.3.0 0.0.0.255 192.168.50.0 0.0.0.255
access-list 103 deny ip 192.168.3.0 0.0.0.255 192.168.51.0 0.0.0.255
access-list 103 permit ip 192.168.3.0 0.0.0.255 any
access-list 104 remark vlan 4
access-list 104 deny ip 192.168.4.0 0.0.0.255 192.168.50.0 0.0.0.255
access-list 104 deny ip 192.168.4.0 0.0.0.255 192.168.51.0 0.0.0.255
access-list 104 permit ip 192.168.4.0 0.0.0.255 any
access-list 104 permit ip 192.168.4.0 0.0.0.255 192.168.5.0 0.0.0.255
access-list 104 permit ip 192.168.4.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 104 permit ip 192.168.4.0 0.0.0.255 192.168.2.0 0.0.0.255
access-list 104 permit ip 192.168.4.0 0.0.0.255 192.168.3.0 0.0.0.255
access-list 104 permit ip any any
access-list 105 remark vlan 5
access-list 105 deny ip 192.168.5.0 0.0.0.255 192.168.50.0 0.0.0.255
access-list 105 deny ip 192.168.5.0 0.0.0.255 192.168.51.0 0.0.0.255
access-list 105 permit ip 192.168.5.0 0.0.0.255 192.168.4.0 0.0.0.255
access-list 105 permit ip 192.168.5.0 0.0.0.255 192.168.3.0 0.0.0.255
access-list 105 permit ip 192.168.5.0 0.0.0.255 192.168.5.0 0.0.0.255
access-list 105 permit ip 192.168.5.0 0.0.0.255 192.168.2.0 0.0.0.255
access-list 105 permit ip 192.168.5.0 0.0.0.255 192.168.1.0 0.0.0.255
access-list 105 permit ip 192.168.5.0 0.0.0.255 any
access-list 107 permit ip 192.168.50.0 0.0.0.255 192.168.50.0 0.0.0.255
access-list 107 deny ip any any
access-list 108 remark vlan 51
access-list 108 permit ip 192.168.51.0 0.0.0.255 192.168.2.0 0.0.0.255
access-list 108 permit ip 192.168.51.0 0.0.0.255 host 192.168.0.71
access-list 108 permit ip 192.168.51.0 0.0.0.255 192.168.51.0 0.0.0.255
access-list 110 remark vlan 10
access-list 121 remark FLUX Lotus
access-list 121 permit ip any host 192.168.0.1
access-list 121 permit ip host 192.168.0.1 any
access-list 122 remark FLUX Oracle
access-list 122 permit ip any host 192.168.0.3
access-list 122 permit ip host 192.168.0.3 any
access-list 123 remark FLUX SQL
access-list 123 permit ip host 192.168.0.6 any
access-list 123 permit ip any host 192.168.0.6
access-list 150 permit udp any any
access-list 150 permit tcp any any
access-list 199 remark vlan 99