Proposed EVB TLV v2 March 4, 2010.

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Presentation transcript:

Proposed EVB TLV v2 March 4, 2010

Contributing Authors Company Contacts BNT Daya Kamath Jay Kidambi Vijoy Pandey Broadcom Uri Elzur Brocade Anoop Ghanwani Emulex Chait Tumuluri HP Paul Bottroff Paul Congdon Chuck Hudson Michael Krause IBM Vivek Kashyap Renato Recio Rakesh Sharma Juniper Srikanth Kilaru QLogic Manoj Wadekar

Summary of Proposed EVB TLV Advertise a station or bridge’s EVB functional and resource capabilities Activate common functional capabilities Reduce resource capabilities to a maximum common value 5/23/2019 EVB

Proposed EVB TLV (1) Transport: LLDP R TLV header TLV type = 127 (7 bits) TLV information string length (9 bits) OUI (3 octets) Subtype (1 octet) EVB Capabilities (2 octets) EVB Current Config. (2 octets) VSI (4 octets) RTE Octets: Bits: 1 2 3 6 7 9 11 15 8 Forwarding Mode Capabilities Reserved ETTP RR 4 STD Auth VDP 14 # VSI Supported (2 octets) # VSI Configured TLV information string = 13 octets R 5 EVB Capabilities -- Describes EVB capabilities that can be supported by the sender. Includes port forwarding modes and other capabilities. EVB Current Configuration – Identifies the EVB capabilities that are currently enabled by the sender. (Only one port forwarding mode may be selected) Forwarding Mode Standard 802.1Q forwarding Reflective Relay Capabilities Bits VSI Discovery Protocol (VDP) 802.1X Authentication Required T3PR Supported RTE (Retransmission Timer Exponent)

Proposed EVB TLV (2) Transport: LLDP R TLV header TLV type = 127 (7 bits) TLV information string length (9 bits) OUI (3 octets) Subtype (1 octet) EVB Capabilities (2 octets) EVB Current Config. (2 octets) VSI (4 octets) RTE Octets: Bits: 1 2 3 6 7 9 11 15 8 Forwarding Mode Capabilities Reserved ETTP RR 4 STD Auth VDP 14 # VSI Supported (2 octets) # VSI Configured TLV information string = 13 octets R 5 Number of VSI Supported – Identifies the number of VSI that are supported by the sender. It may indicate limits imposed by buffering, ACL rules, etc. Number of VSI configured identifies the of VSI currently in use. From the station, it indicates the number of resources that should be reserved by the bridge. From the bridge, it indicates the number of active Virtual Station Interfaces (VSI) discovered / configured Retransmission Exponent (RTE) RTG (Retransmission Granularity) = 10 us Retransmission Multiplier (RTM) = 2RTE The ULP retransmission timer = RTM * RTG Both sides agree to the largest common value

EVB Discovery TLV Usage Example Station (e.g., Hypervisor) 1 Bridge EVB TLV – OFFER CAPABILTIES Capabilities Forwarding: Std, RR Other: VSI, Auth, etc. Current Config.(Std, None) # VSIs Supported = J # VSIs Configured = 0 RTE = 15 EVB TLV - CONFIGURE Capabilities & Current Config. Forwarding: RR Other: VSI, Auth, etc. # VSIs Supported = J # VSIs Configured = K RTE = 10 EVB TLV – CONFIRMATION Capabilities Forwarding: Std, RR Other: VSI, Auth, etc. Current Config. Forwarding: RR Other: VSI, Auth, etc. # VSIs Supported = J # VSIs Configured = K RTE 10 Bridge advertises what modes it can support and the max number of VSIs it can handle. Server configures itself from the available capabilities according to local policy. But still advertises its full set of capabilities. 2 3 Bridge matches its configuration to the limited capabilities advertised by the station. Station or Bridge may initiate EVB TLV Exchange 5/23/2019 EVB