Using segmentation identification to identify destination node within network environment

Abstract

Packet transmission techniques are disclosed herein. An exemplary method includes receiving a packet that identifies an internet protocol (IP) address assigned to more than one destination node; selecting a virtual routing and forwarding table based, at least in part, on a segmentation identification in the packet; identifying a designated destination node in the packet based, at least in part, on the selected virtual routing and forwarding table; and transmitting the packet to the designated destination node.

What is claimed is: 
     
         1 . An apparatus comprising:
 a processor operable to execute instructions that, when executed, cause the apparatus to:
 select a table based, at least in part, on a packet that identifies an internal protocol (IP) address; 
 identify a node in the packet based, at least in part, on the table; and 
 transmit the packet to the node. 
   
     
     
         2 . The apparatus of  claim 1 , further comprising:
 a port number associated with the node, the apparatus further configured to identify the node in the table based, at least in part, on a correlation between the IP address and the port number.   
     
     
         3 . The apparatus of  claim 1 , further configured to select a table based, at least in part, on a segmentation identification in the packet, wherein the segmentation identification is associated with a virtual local area network (VLAN), and a virtual port associated with the VLAN is associated with the segmentation identification. 
     
     
         4 . The apparatus of  claim 1 , wherein the apparatus is a switch. 
     
     
         5 . The apparatus of  claim 1 , further configured to assign a core VLAN switch virtual interface (SVI) a same IP address as a border gateway protocol (BGP) control SVI. 
     
     
         6 . The apparatus of  claim 1 , further configured to assign a customer VLAN for a first tenant a same IP address as a customer VLAN for a second tenant. 
     
     
         7 . The apparatus of  claim 1 , further configured to select a table based, at least in part, on a segmentation identification in the packet, wherein the segmentation identification differentiates a tenant from other tenants in a network environment. 
     
     
         8 . The apparatus of  claim 1 , further configured to select a table based, at least in part, on a segmentation identification in the packet, and to identify the node as a destination node corresponding with the IP address in the table. 
     
     
         9 . The apparatus of  claim 1 , further comprising:
 a memory having a segmentation identification correlation table, the apparatus further configured to select the table corresponding with a segmentation identification in the segmentation identification correlation table.   
     
     
         10 . A method, comprising:
 selecting a table based, at least in part, on a packet that identifies an internal protocol (IP) address;   identifying a node in the packet based, at least in part, on the table; and   transmitting the packet to the node.   
     
     
         11 . The method of  claim 10 ,
 wherein,
 the selecting the table is based, at least in part, on a segmentation identification in the packet, and 
 the segmentation identification is associated with a virtual local area network (VLAN), and a virtual port associated with the VLAN is associated with the segmentation identification. 
   
     
     
         12 . The method of  claim 10 , further comprising:
 assigning a core VLAN switch virtual interface (SVI) a same IP address as a border gateway protocol (BGP) control SVI.   
     
     
         13 . The method of  claim 10 , further comprising:
 assigning a customer VLAN for a first tenant a same IP address as a customer VLAN for a second tenant.   
     
     
         14 . The method of  claim 10 ,
 wherein,
 the selecting the table is based, at least in part, on a segmentation identification in the packet, and 
 the segmentation identification differentiates a tenant from other tenants in a network environment. 
   
     
     
         15 . The method of  claim 10 , further comprising:
 identifying the node as a destination node corresponding with the IP address in the table.   
     
     
         16 . The method of  claim 10 , wherein the selecting the table is based, at least in part, on a segmentation identification in a segmentation identification correlation table. 
     
     
         17 . A non-transitory media encoded with logic that includes instructions for execution, and when executed by a processor is configured to perform operations, comprising:
 selecting a table based, at least in part, on a packet that identifies an internal protocol (IP) address;   identifying a node in the packet based, at least in part, on the table; and   transmitting the packet to the node.   
     
     
         18 . The non-transitory media of  claim 17 , the operations further comprising assigning a core VLAN switch virtual interface (SVI) a same IP address as a border gateway protocol (BGP) control SVI 
     
     
         19 . The non-transitory media of  claim 17 , the operations further comprising assigning a customer VLAN for a first tenant a same IP address as a customer VLAN for a second tenant. 
     
     
         20 . The non-transitory media of  claim 17 ,
 wherein,
 the selecting the table is based, at least in part, on a segmentation identification in the packet, and 
 the segmentation identification differentiates a tenant from other tenants in a network environment.