eemoon

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Thank you for your reply. i think you are right. but this configuration is already in production. the question is if the Qos configuration on the two SW1 and SW2 are still effective? because we do not know if the Nexus7K without trust configuration can pass all marking when traffic go through Nexus7K.
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Thank you for your reply. i think you are right. but this configuration is already in production. the question is if the Qos configuration on the two SW1 and SW2 are still effective? because we do not know if the Nexus7K without trust configuration can pass all marking when traffic go through Nexus7K.

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The Nexus if not configured to honor the markings from the edge switches will rewrite the markings based on its default COS/DSCP table.
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The Nexus if not configured to honor the markings from the edge switches will rewrite the markings based on its default COS/DSCP table.

Fractional CTO

David Favor

Sr.Net.Eng

Soulja

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Here is diagram for Voip phone connection. &nbsp; &nbsp;phone1 ---- SW1 ----- Nexus7K ------SW2 ------ phone2<br />
We configure auto Qos at two switches (SW1 and SW2), both switches could be 3560 or 4500 etc . Do you think we have to configure auto Qos or some Qos at the interface of Nexus7K which are connected to SW1 and SW2? Thank you
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Here is diagram for Voip phone connection.    phone1 ---- SW1 ----- Nexus7K ------SW2 ------ phone2
We configure auto Qos at two switches (SW1 and SW2), both switches could be 3560 or 4500 etc . Do you think we have to configure auto Qos or some Qos at the interface of Nexus7K which are connected to SW1 and SW2? Thank you

Do we have to configure Qos at this situation?

Voice over IP (VoIP) is a methodology and group of technologies for the delivery of voice communications and multimedia sessions over Internet Protocol (IP) networks, such as the Internet. Other terms commonly associated with VoIP are IP telephony, Internet telephony, broadband telephony, and broadband phone service. The term specifically refers to the provisioning of communications services (voice, fax, SMS, voice-messaging) over the public Internet, rather than via the public switched telephone network (PSTN).  Examples of the VoIP protocols are H.323, Media Gateway Control Protocol (MGCP), Session Initiation Protocol (SIP), H.248 (also known as Media Gateway Control (Megaco)), Real-time Transport Protocol (RTP), Real-time Transport Control Protocol (RTCP), Secure Real-time Transport Protocol (SRTP), Session Description Protocol (SDP), and Inter-Asterisk eXchange (IAX).