LOWONGAN KERJA TERBARU: RE: [ITCENTER] Butub Switch Manageble

Itu 2 perangkat dipakai menyatu atau bisa salah satunya ?
Masing-masing port bisa manage khan ?

Maaf belum pernah pakai Switch manageable

Kasus yg sering saya temui sich begini :
Saat ini menggunakan Switch 3Com unmanage
Ketika lampu berkedip kencang... akses data di jaringan jadi lambat
Biasanya aku ping ke dns luar time-nya pasti tinggi diatas 1500ms, kemudian
cabut kabel satu-satu
Nah biasanya dari situ ketahuan salah satu jalur yang menyebabkan trafik-nya
tinggi sekali

Dengan D-Link DES-3526 dan DES-3026 bisa langsung meng-drop port tersebut
khan ya..

Kalo' produk lain missal Allied Telesyn AT-GS950/16 bisa gak ya ?
(alternative aja, harga juga lebih mahal)

Salam,
Malik Mt

-----Original Message-----
From: ITCENTER@yahoogroups.com [mailto:ITCENTER@yahoogroups.com] On Behalf
Of Albert Siagian
Sent: 12 Maret 2009 11:19
To: ITCENTER@yahoogroups.com
Subject: Re: [ITCENTER] Butub Switch Manageble

Ngga tahu juga sih, saya cuma copy-paste dari manual :-)

Traffic Control
On a computer network, packets such as Multicast packets and Broadcast
packets continually flood the network as normal
procedure. At times, this traffic may increase do to a malicious
endstation on the network or a malfunctioning device, such as a
faulty network card. Thus, switch throughput problems will arise and
consequently affect the overall performance of the switch
network. To help rectify this packet storm, the Switch will monitor and
control the situation.
The packet storm is monitored to determine if too many packets are
flooding the network, based on the threshold level provided
by the user. Once a packet storm has been detected, the Switch will drop
packets coming into the Switch until the storm has
subsided. This method can be utilized by selecting the Drop option of
the Action field in the window below.

The Switch will also scan and monitor packets coming into the Switch by
monitoring the Switch's chip counter. This method is
only viable for Broadcast and Multicast storms because the chip only has
counters for these two types of packets. Once a storm
has been detected (that is, once the packet threshold set below has been
exceeded), the Switch will shutdown the port to all
incoming traffic with the exception of STP BPDU packets, for a time
period specified using the CountDown field. If this field
times out and the packet storm continues, the port will be placed in a
Shutdown Forever mode which will produce a warning
message to be sent to the Trap Receiver. Once in Shutdown Forever mode,
one method of recovering this port is to manually
recoup it using the Port Configuration window in the Administration
folder, and selecting the disabled port and returning it to
an Enabled status. Otherwise, the Shutdown Forever mode will be
Auto-Recovery after 5 mins. To utilize this method of Storm
Control, choose the Shutdown option of the Action field in the window below.

Use the Traffic Control Setting window to enable or disable storm
control and adjust the threshold for multicast and broadcast
storms, as well as Unicast (Destination Look Up Failure). Traffic
control settings are applied to individual Switch modules. To
view the following window, click Configuration > Traffic Control:

Select the type of Storm Type to detect, either Broadcast Multicast or
Unicast. Once selected , use
the pull-down menu to enable or disable this storm detection.

Select the method of traffic Control from the pull down menu. The
choices are:
shutdown - Utilizes the Switch's software Traffic Control mechanism to
determine the Packet Storm
occurring. Once detected, the port will deny all incoming traffic to the
port except STP BPDU
packets, which are essential in keeping the Spanning Tree operational on
the Switch. If the
countdown timer has expired and yet the Packet Storm continues, the port
will be placed in
Shutdown Forever mode and is no longer operational until the user
manually resets the port using
the config ports enable command or waits for 5 mins to let the Shutdown
Forever mode enter Auto-
Recovery. Choosing this option obligates the user to configure the
Interval setting as well, which will
provide packet count samplings from the Switch's chip to determine if a
Packet Storm is occurring.
drop - Utilizes the hardware Traffic Control mechanism, which means the
Switch's hardware will
determine the Packet Storm based on the Threshold value stated and drop
packets until the issue is
resolved.

Salam
Albert