We seem to experience intermittent network slowdown and I am hoping that I can run our network setup by some forum members for advice (all switches are 3com)
Setup:
Section of downstairs PC’s – run to upstairs patch panel and switch (S1)
Upstairs PC’s – run to upstairs patch panel and gigabit switch (S2)
S1 and S2 run are chained and then S2 runs through 2 patch panels before going into the main downstairs comms switch
Downstairs comms:
S3 is a gigabit switch for the servers.
S4 S5 S6 S7 are also chained.
1. So basically traffic from some sections of the building (upstairs/downstairs) are travelling down a single wire from S2 via 2 patch panels before going into S3 (4226 – non gigabit) – would this cause some form of bottleneck because of either passing through patch panels and/or flooding a switch (that is already (chained to one above and below)
2. S4 S5 S6 S7 are bizarrely chained – for example I did notice that S5 is chained to S6 (but not to S4) so traffic would have to pass down through S6 to get to S3.
I’m going to chain these properly so that S3-S4 S4-S5 etc etc but I guess this could contribute to network slowdown under busy periods.
3. We are using DHCP but 3 of the 3com switches don’t appear to have dynamic IP addresses (or even a static one associated) so are obviously unmanaged. I have run various IP scanners but they don’t seem to pickup the switch IP – is this possible?
Many thanks in advanced.
Setup:
Section of downstairs PC’s – run to upstairs patch panel and switch (S1)
Upstairs PC’s – run to upstairs patch panel and gigabit switch (S2)
S1 and S2 run are chained and then S2 runs through 2 patch panels before going into the main downstairs comms switch
Downstairs comms:
S3 is a gigabit switch for the servers.
S4 S5 S6 S7 are also chained.
1. So basically traffic from some sections of the building (upstairs/downstairs) are travelling down a single wire from S2 via 2 patch panels before going into S3 (4226 – non gigabit) – would this cause some form of bottleneck because of either passing through patch panels and/or flooding a switch (that is already (chained to one above and below)
2. S4 S5 S6 S7 are bizarrely chained – for example I did notice that S5 is chained to S6 (but not to S4) so traffic would have to pass down through S6 to get to S3.
I’m going to chain these properly so that S3-S4 S4-S5 etc etc but I guess this could contribute to network slowdown under busy periods.
3. We are using DHCP but 3 of the 3com switches don’t appear to have dynamic IP addresses (or even a static one associated) so are obviously unmanaged. I have run various IP scanners but they don’t seem to pickup the switch IP – is this possible?
Many thanks in advanced.