Quality of Service 71
• Queue and schedule traffic:
• Place packets in one of two COS queues
• Schedule transmission based on the COS queue weight
Using ACL filters
Access Control Lists are filters that allow you to classify and segment traffic, so you can provide different levels of
service to different traffic types. Each filter defines the conditions that must match for inclusion in the filter, and also
the actions that are performed when a match is made.
Summary of packet classifiers
The GbE2c allows you to classify packets based on various parameters, such as:
• Ethernet
• Source MAC address/mask
• Destination MAC address/mask
• VLAN number/mask
• Ethernet type
• Ethernet Priority, which is the IEEE 802.1p Priority
• IPv4
• Source IP address/mask
• Destination IP address/mask
• Type of Service value
• IP protocol number: The protocol number or name as shown in the following table:
Table 14 Well-known protocol types
Number Protocol Name
1 icmp
2 igmp
6 tcp
17 udp
89 ospf
112 vrrp
• TCP/UDP
• TCP/UDP application source port, as shown in the table titled “Well-Known Application Ports”
• TCP/UDP application destination port, as shown in the table titled “Well-Known Application Ports”
• TCP/UDP flag value, as shown in the table titled “Well-Known TCP Flag Values”
Table 15 Well-known application ports
Number TCP/UDP
Application
Number TCP/UDP
Application
Number TCP/UDP
Application
20 ftp-data 79 finger 179 irc
21 ftp 80 http 194 imap3
22 ssh 109 pop2 220 ldap
23 telnet 110 pop3 389 https
25 smtp 111 sunrpc 443 rip
37 time 119 nntp 520 rtsp
42 name 123 ntp 554 Radius
43 whois 143 imap 1645;1812 Radius Accounting
53 domain 144 news 1813 hsrp
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