Fip Ethernet Frame Format; Pre-Fip Virtual Link Instantiation; Information About Dcbx; Data Center Bridging Exchange Protocol - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

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Information About FCoE

FIP Ethernet Frame Format

FIP is encapsulated in an Ethernet packet with a dedicated EtherType, 0x8914. The packet has a 4-bit version

field. Along with the source and destination MAC addresses, the FIP packet also contains a FIP operation

code and a FIP operation subcode. The following table describes the FIP operation codes.

Table 55: FIP Operation Codes

FIP Operation Code

Pre-FIP virtual link instantiation consists of two phases; link discovery using the Data Center Bridging

Exchange protocol (DCBX), which is followed by Fabric Login.

The Cisco Nexus 5000 Series switch is backward compatible with Gen-1 CNAs that operate in pre-FIP mode.

Pre-FIP is also known as the Cisco, Intel, Nuova Data Center Bridging Exchange (CIN-DCBX) protocol.

The Data Center Bridging Exchange (DCBX) protocol is an extension of the Link Layer Discovery Protocol

(LLDP). DCBX end points exchange request and acknowledgment messages. For flexibility, parameters are

coded in a type-length-value (TLV) format.

The Cisco Nexus 5000 Series switch supports two versions of DCBX:

• CEE-DCBX—The Converged Enhanced Ethernet DCBX is supported on all T11-compliant Gen-2

Cisco Nexus 5000 Series Switch CLI Software Configuration Guide

FIP Ethernet Frame Format

FIP Operation

Discovery Solicitation

Discovery Advertisement

Virtual Link Instantiation Request

Virtual Link Instantiation Reply

FIP Keep Alive

FIP Clear Virtual Links

FIP VLAN Request

FIP VLAN Notification

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