By default the Cisco IP phone forwards the voice traffic with an 8021Q priority

By default the cisco ip phone forwards the voice

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By default, the Cisco IP phone forwards the voice traffic with an 802.1Q priority of 5. Creates a special 802.1Q trunk ( so called trunk later ) Negotiated by DTP and CDP (provisioning of the vvid) CoS (Class of Service) in 802.1p bits (later) vvid puts: Voice packets on voice VLAN Voice VLAN is configured. Data packets in Native VLAN VLAN 1 by default unless modified on the switch Can configure the data VLAN to be a a VLAN other than Native or Voice. (coming) Switch(config)# interface type mod/num Switch(config-if)# switchport voice vlan vlan-id Voice: Tagged as vvid Data: Untagged: Native VLAN Recommended Option 802.1Q trunk CoS in 802.1p bits
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48 Configuring Voice VLAN Operation Portfast is automatically enabled with voice VLAN. Voice: Tagged as voice VLAN 100 Data: Untagged: Native VLAN 802.1Q trunk CoS in 802.1p bits Switch(config)# interface FastEthernet0/24 Switch(config-if)# switchport voice vlan 100 Switch(config-if)# switchport access vlan 20 Tagged as VLAN 20 Switch# show run interface FastEthernet0/24 switchport voice vlan 100 switchport access vlan 20 spanning-tree portfast More to come! Recommended Option
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Configuring WLAN Operation 49
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50 Traditional WLAN Architecture Traditional WLAN each AP serves as the central hub for its own BSS. Each AP must be configured individually for network policies including: Radio frequency (RF) Security policies Authentication and association Monitoring traffic QoS Bandwidth policing Rogue AP detection Cisco calls this an autonomous mode AP . Traffic patterns for an autonomous AP are completely handled by the AP. BSS Range
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51 Traditional WLAN Architecture AP can support multiple SSIDs if multiple VLANs are extended to it over a trunk link. If you want to offer the same SSIDs from several automous APs, the VLANS must be extended to the APs in a contiguous manner. Problem is that the SSID and its VLAN would have to be extended everywhere the user could possibly roam. This would cause end-to-end or campus-wide VLANs which is not good network design practice. Switched Routed
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52 Cisco Unified Wireless Network Architecture Cisco Unified Wireless Network Architecture centralizes many traditional capabilities moving many functions to a central location including: WLAN security WLAN deployment WLAN management WLAN control Real-time Processes Real-time Processes Management Processes Management Processes RF Transmit/Receive MAC Management Encryption RF Transmit/Receive MAC Management Encryption RF Management Association & Roaming Management Client Authentication Security Management QoS RF Management Association & Roaming Management Client Authentication Security Management QoS LWAPP or CAPWAP Tunnel Traditional WLAN Cisco Unified Wireless Network
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53 Cisco Unified Wireless Network Architecture Real-time processes include: Sending/receiving 802.11 frames, AP beacons, probes, data encryption.
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