Hi friends,
Please look at the simple schema I attached to this message.
I have lan that consist of a core 4503 and several 3750 access switches. They are all connected through the Gigabit ports, 802.1q trunk, VTP V1. They work in a cluster. Access switches have 24 * 100MBit/s ports and PCs are connected to them.
I have about 30 VLANs and their interfaces are configured as follows on the core switch:
VLAN10 - 10.0.10.1
VLAN20 - 10.0.20.1
VLAN30 - 10.0.30.1 etc.
I made a simple access map:
vlan access-map MAP1 10
action forward
match ip address ALL_TO_SERVER
vlan filter MAP1 vlan-list 2-1000
ip access-list extended ALL_TO_SERVER
permit ip any 10.0.10.0 0.0.0.255
permit ip 10.0.10.0 0.0.0.255 any
permit ip 10.0.20.0 0.0.0.255 any
permit ip any 10.0.20.0 0.0.0.255
Clearly I want VLAN10 & 20 to be accessible by everyone and vice-versa.
The problem involves speed.
When I set a PC to a VLAN10 on the second(right) 3750 all works fine - 100MBit/s
But when I place it in VLAN20 or any other VLAN different than VLAN10 the speed falls to 16Mbit/s.
Since I have limited number of users i do not worry of network congestion.
I just want to disable all kind of QoS or shaping.
I tried :
no qos - on 4503
no mls qos - on 3750
I also tried disabling features as DBL, header rewrite etc. I have nothing specified per switch port that might apply some kind of bandwidth restriction.
Unfortunatelly nothing works.
May be it is some setting involving intra-VLAN communication?
Any help or guideline will be appreciated. Thanks.
