3Com Switch 8800 Advanced Software V5 Configuration Guide

822 CHAPTER 59: FLOW TEMPLATE CONFIGURATION
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CAUTION: When one of the following situations occurs, you cannot configure
user-defined flow templates on interfaces:
■ B-type and C-type modules have IPv6 unicast and mix-insertion enabled on the
virtual interfaces of VLANs.
■ A Loopback interface for tunneling is configured on the ports of D-type
modules.
■ B-type and C-type modules have MLD, MLD Snooping and IPv6 PIM enabled on
the virtual interfaces of VLANs.
■ B-type, C-type and D-type modules have the RSVP protocol enabled on the
virtual interfaces of VLANs.
■ B-type, C-type and D-type modules are configured with VPLS redirection to the
VPLS service modules.
Once a user-defined flow template is configured on an interface, only after the
corresponding functions are removed can the user-defined flow template be
deleted.
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■ By default, the default flow template is referenced on interfaces.
■ On an interface you can reference only one flow template and this flow
template must be one already created.
■ The default flow template includes such fields as sip, dip, ip-protocol, sport,
dport, tcp-flag, icmp-type, icmp-code, service-vlan-id, and ethernet-protocol.
■ For modules suffixed with D, the default flow template also includes sipv6,
dipv6, ipv6-protocol, and ipv6-fragment fields.
■ Referencing a user-defined flow template on an interface may cause VLAN
ACLs not function at the inbound direction of the interface.
■ Configuring user-defined flow templates is prohibited on the even numbered
interface of the 3C17526 module. However, user-defined flow templates
configured on the odd numbered ports will function at the outbound direction
of all ports.
■ User-defined flow templates are not available for the POS interface.
The total size of all fields (in bytes) in a flow template should be less than 16 bytes.
Table 34 shows the size of every field.
Apply the flow template to the
interface or port group
flow-template
flow-template-name
Optional
The default one applies
by default.
To do... Use the command... Remarks
Tabl e 34 Description on the size of every field
Field Byte number Remarks
customer-vlan-id 4 or 8 Usually 8 bytes (4 bytes when the
ethernet-protocol field is configured)
dip 4 -