3com 8807 Guía Del Usuario
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C
HAPTER
22: Q
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ONFIGURATION
[3Com-port-group1] port GigabitEthernet 7/1/1 GigabitEthernet 7/1/2
4 Redirect the packet forwarded to the port group.
# Set the next hop of the packet forwarded to the port in port group 1 to 3.0.0.1.
[3Com-port-group1] traffic-redirect inbound ip-group 2000 rule 0 next-hop
3.0.0.1
3.0.0.1
QoS Configuration
The following sections describe QoS configuration tasks.
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Before initiating any of these QoS configuration tasks, you should first define
the corresponding ACL. Then you can achieve packet filtering just by activating
the right ACL.
the corresponding ACL. Then you can achieve packet filtering just by activating
the right ACL.
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To configure packet filtering, you need only to activate corresponding ACL. For
more details, refer to the section “Activating ACL”.
more details, refer to the section “Activating ACL”.
Some of QoS terms are listed in the following table.
Table 158 QoS terms
Term
Description
CoS
It has the same meaning as 802.1p priority. Both refer to the priority at
packet header, with the value ranging from 0 to 7.
packet header, with the value ranging from 0 to 7.
Service parameters
Switch allocates a set of parameters, which are used in achieving QoS
functions, upon receiving a packet. Four items are included: 802.1p
priority, DSCP priority, local precedence and drop precedence.
functions, upon receiving a packet. Four items are included: 802.1p
priority, DSCP priority, local precedence and drop precedence.
Drop-precedence
One of service parameters, ranging from 0 to 2. Drop precedence is
allocated when the switch receives the packet and may be when the
packet is processed. Allocating drop precedence to the packet is also
called coloring the packet: the packet with drop precedence 2 as red,
that with drop precedence 1 as yellow and that with drop precedence 0
as green. Drop precedence is referred to when switch needs to drop
packets in its congestion.
allocated when the switch receives the packet and may be when the
packet is processed. Allocating drop precedence to the packet is also
called coloring the packet: the packet with drop precedence 2 as red,
that with drop precedence 1 as yellow and that with drop precedence 0
as green. Drop precedence is referred to when switch needs to drop
packets in its congestion.