Chapter 21 Classifier
GS2220 Series User’s Guide
213
In the Internet Protocol there is a field, called “Protocol”, to identify the next level protocol. The following
table shows some common protocol types and the corresponding protocol number. Refer to
http://
www.iana.org/assignments/protocol-numbers
for a complete list.
Some of the most common TCP and UDP port numbers are:
21.4 Cla ssifie r G lo ba l Se tting C o nfig ura tio n
Use this screen to configure the match order and enable logging on the Switch. In the Cla ssifie r
Config ura tio n screen click Cla ssifie r Glo ba l Se tting to display the configuration screen as shown.
Fig ure 166 Advanced Application > Classifier > Classifier Configuration > Classifier Global Setting
The following table describes the labels in this screen.
Table 91 Common IP Protocol Types and Protocol Numbers
PRO TO C O L TYPE PRO TO C O L NUMBER
ICMP 1
TCP 6
UDP 17
EGP 8
L2TP 115
Table 92 Common TCP and UDP Port Numbers
PRO TO C O L NAME TC P/ UDP PO RT NUMBER
FTP 21
Telnet 23
SMTP 25
DNS 53
HTTP 80
POP3 110
Table 93 Advanced Application > Classifier > Classifier Configuration > Classifier Global Setting
LABEL DESC RIPTIO N
Match
Order
Select m a nua l to have classifier rules applied according to the weight of each rule you configured in
Adva nc e d App lic a tio n > Cla ssifie r > C la ssifie r Co nfig ura tio n.
Alternatively, select a uto to have classifier rules applied according to the layer of the item configured
in the rule. Layer-4 items have the highest priority, and layer-2 items has the lowest priority. For
example, you configure a layer-2 item (VLAN ID) in classifier A and configure a layer-3 item (source IP
address) in classifier B. When an incoming packet matches both classifier rules, classifier B has priority
over classifier A.
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