3Com 3CBLSF26H manual Configuring Voice Vlan, Cir

Figure 3-58Bandwidth Summary Page

The Bandwidth Summary Page contains the following fields:

Table 3-47Bandwidth Summary Page item description

Item		Description
		Indicates the ingress rate limiting status on the interface. The possible field
Ingress		values are:
	Status	z Enabled: Ingress rate limiting is enabled on the interface.
Rate		z Disabled: Ingress rate limiting is disabled on the interface. This is the
Limit
		default.
	Rate Limit	Indicates the ingress traffic limit for the port.
		Indicates the egress traffic shaping status for the interface. The possible
		field values are:
Egress	Status	z Enabled: Egress traffic shaping is enabled for the interface.
		z Disabled: Egress traffic shaping is disabled for the interface. This is the
Shaping		default.
Rates
	CIR	Indicates the Committed Information Rate (CIR) for the interface.
	CbS	Indicates the Committed Burst Size (CbS) for the interface.

Configuring Voice VLAN

Voice VLAN allows network administrators to enhance VoIP service by configuring ports to carry IP voice traffic from IP phones on a specific VLAN. VoIP traffic has a preconfigured OUI prefix in the source MAC address. Network Administrators can configure VLANs on which voice IP traffic is forwarded. Non-VoIP traffic is dropped from the Voice VLAN in auto Voice VLAN secure mode. Voice VLAN also provides QoS to VoIP, ensuring that the quality of voice does not deteriorate if the IP traffic is received unevenly. The system supports one Voice VLAN.

The Baseline Switch 2250-SFP Plus does not support improving the priority of voice streams.

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