Filter
Top Products
Quality of Service: Managing Bandwidth More Effectively
Globally-Configured QoS
Syntax: qos dscp-map < codepoint > priority <0 - 7>>
(Optional) This command is required only if an 802.1p
priority is not
already assigned to the specified <codepoint >
in the DSCP Policy table (see Table 6-11 on page 6-89).
When the switch applies this policy to a packet, the priority
determines the packet’s queue in the outbound port to which
it is sent. If the packet leaves the switch on a tagged port, it
carries the 802.1p priority with it to the next downstream
device. For IP packets, the DSCP will be replaced by the
codepoint specified in this command. (Default: No-override
for most codepoints. See Table 6-11.)
4. Configure the switch to assign the DSCP policy to packets with the
specified IP address or subnet mask.
IPv4 Syntax: qos device-priority < ipv4-address | [ipv4] ipv4-address/mask-length >
dscp < codepoint >
IPv6 Syntax: qos device-priority < ipv6-address | ipv6 ipv6-address/prefix-length >>
dscp < codepoint >
Assigns a DSCP policy in packets with the specified IP
address or subnet mask in the source or
destination field in
a packet header, where:
• ipv4-address or ipv6-address is an IPv4 or IPv6 address used
to match the source or
destination address in packet
headers.
Note: An IPv6 local-link address (such as
fe80::110:252%vlan20) that is automatically generated on
a VLAN interface is not supported as an ipv6-address value.
• [ipv4] ipv4-address/mask-length is the subnet identified by
the IPv4 mask for the specified address that is used to
match the IPv4 in the source or
destination field of packet
headers.
• ipv6 ipv6-address/prefix-length is the subnet identified by the
IPv6 prefix-length for the specified address that is used to
match the IPv6 address in the source or
destination field
of packet headers.
Enter the IPv4 mask or IPv6 prefix length with an address
in CIDR format by using the number of significant bits
(for example, 2001:db8:2:1:262:a03:e102:127/64 or
10.28.31.1/24).
6-37