Alternative approach for dhcp support by introducing chained ethernet. #360

SuryyaKrJana · 2024-03-11T08:56:04Z

https://redocly.github.io/redoc/?url=https://raw.githubusercontent.com/open-traffic-generator/models/dhcp_support2/artifacts/openapi.yaml&nocors#tag/Configuration/operation/set_config

This is model designed to take care of implementation:

DHCP Client & Server are Keysight and Relay Agent as DUT: In this the construct dhcp_v4interface and dhcp_v4interface are exposed under an Ethernet Interface to configure DHCP Client parameters.
DHCP Client Behind the Relay Agent and are Keysight and DHCP Server as Keysight/DUT:
In this case DHCP client sits beside the Relay Agent that runs on top of connection Interfaces.
Hence new a construct introduced, Chained Ethernets which parallel to connected Ethernets under the Device. This chained Ethernet can be linked to another chained Ethernet or a connected Ethernet interface.
dhcp_v4interface and dhcp_v4interface are exposed under a Chained Ethernet interface to configure DHCP Client parameters.
BGP peer can be configured on top of DHCP interface: BGP peer is to refer ipv4_name or ipv6_name for IPv4/IPv6 connected or loopback interfaces. Now BGP peer can also refer to dhcp_v4interface or dhcp_v6interface interfaces.
For the Traffic use case, we have auto learning of the destination learning. Now the model is extended to auto learning of source IP address by exposing AutoDhcp() . Also TXRx name can be referred to dhcp_v4interface/dhcp_v6interface.

`
// Case-1: DHCP Client & Server are Keysight and Relay Agent as DUT.
// DHCPV4-Client(x.x.x.x)<-------> (1.1.1.1)RelayAgent(DUT)(2.2.2.1) <------>(2.2.2.2) DHCPV4-Server(Pool: 100.1.1.1)
// DHCP Client is configured on connected interface.

	config := gosnappi.NewConfig()
	// add ports
	p1 := config.Ports().Add().SetName("p1").SetLocation(opts.IxiaCPorts()[0])
	p2 := config.Ports().Add().SetName("p2").SetLocation(opts.IxiaCPorts()[1])

	// add devices
	d1 := config.Devices().Add().SetName("p1d1")
	d2 := config.Devices().Add().SetName("p2d1")

	// add protocol stacks for device d1
	d1Eth1 := d1.Ethernets().
		Add().
		SetName("p1d1eth").
		SetMac("00:00:01:01:01:01").
		SetMtu(1500)
	d1Eth1.Connection().SetPortName(p1.Name())

	p1d1DhcpV4Client := d1Eth1.
		DhcpV4interface().
		SetName("p1d1dhcpv4").
		SetEthName(d1Eth1.Name())
	
	// add protocol stacks for device d2
	d2Eth1 := d2.Ethernets().
		Add().
		SetName("p2d1eth").
		SetMac("00:00:02:02:02:02").
		SetMtu(1500)
	d2Eth1.Connection().SetPortName(p2.Name())

	d2p2Ipv4 := d2Eth1.
		Ipv4Addresses().
		Add().
		SetName("p2d1ipv4").
		SetAddress("2.2.2.2").
		SetGateway("2.2.2.1").
		SetPrefix(32)

	d2p2DhcpServerv4Iface1 := d2.DhcpServer().V4Server().
		Ipv4Interfaces().Add().
		SetIpv4Name("p2d1ipv4") //

	p2d2DhcpV4Server := d2Dhcpv4Iface1.
		v4().
		SetName("p2d2DhcpV4Server")

	p2d2DhcpV4Server.SetLeaseTime(1000).
		SetPoolSize(100).
		SetStartPoolAddress("100.1.1.1").
		SetPrefix(24).
		SetStep(1)


	// add endpoints and packet description flow 1
	f1 := config.Flows().Items()[0]
	f1.SetName(p1.Name() + " -> " + p2.Name()).
		TxRx().Device().
		SetTxNames([]string{p1d1DhcpV4Client.Name()}).
		SetRxNames([]string{d2p2DhcpServerv4Iface1.Ipv4Name()})

	f1Eth := f1.Packet().Add().Ethernet()
	f1Eth.Src().SetValue(d1Eth1.Mac())
	f1Eth.Dst().Auto()

	f1Ip := f1.Packet().Add().Ipv4()
	f1Ip.Src().AutoDhcp()
	f1Ip.Dst().SetValue("2.2.2.2")

	// add endpoints and packet description flow 2
	f2 := config.Flows().Items()[1]
	f2.SetName(p2.Name() + " -> " + p1.Name()).
		TxRx().Device().
		SetTxNames([]string{p2d2DhcpV4Server.Name()}).
		SetRxNames([]string{p1d1DhcpV4Client.ConnEthName()})

	f2Eth := f2.Packet().Add().Ethernet()
	f2Eth.Src().SetValue(d2Eth1.Mac())
	f2Eth.Dst().Auto()

	f2Ip := f2.Packet().Add().Ipv4()
	f2Ip.Src().SetValue("2.2.2.2")
	f2Ip.Dst().AutoDhcp()

// Case-2: DHCP Client Behind the Relay Agent and are Keysight and DHCP Server as Keysight/DUT.
// DHCPV4-Client(x.x.x.x)<------->(100.1.1.1)RelayAgent(DUT)(2.2.2.1) <------>(2.2.2.2) DHCPV4-Server(Pool: 100.1.1.1)
// DHCP Client is configured on unconnected connected interface.

	config := gosnappi.NewConfig()

	// add ports
	p1 := config.Ports().Add().SetName("p1").SetLocation(opts.IxiaCPorts()[0])
	p2 := config.Ports().Add().SetName("p2").SetLocation(opts.IxiaCPorts()[1])

	// add devices
	d1 := config.Devices().Add().SetName("p1d1")
	d1_chained := config.Devices().Add().SetName("p1d1_chained")

	d2 := config.Devices().Add().SetName("p2d1")

	// add protocol stacks for device d1 where Relay Agent will be configureds
	d1Eth1 := d1.Ethernets().
		Add().
		SetName("p1d1eth").
		SetMac("00:00:01:01:01:01").
		SetMtu(1500)
	d1Eth1.Connection().SetPortName(p1.Name())

// Configure a IPv4 stack
	d1p1Ipv4 := d1Eth1.
		Ipv4Addresses().
		Add().
		SetName("p1d1ipv4").
		SetAddress("2.2.2.1").
		SetGateway("2.2.2.2").
		SetPrefix(24)

	// Configure a (place holder) Relay Agent
	d1p1RelayAgent := d2.RelayAgent()
	  IpV4interfaces().Add().V4RAInst().
		SetName("d1p1RelayAgent1").
		SetIpv4Name(d1p1Ipv4.Name()).
		SetCliendSideAddress("100.1.1.1")
		SetDhcpServer("2.2.2.2")

 	// Chained Ethernet where DHCPClient behind the Relay Agent will be configured.
	d1ChainedEth2 := d1_chained.ChainedEthernets().
		Add().
		SetName("p1d1eth2_chained").
		SetMac("00:00:01:01:01:01").
		SetChainedEthernetName
	d1ChainedEth2.Connection().ChainedEthernetName(d1Eth1.Name())

	p1d1DhcpV4Client := d1ChainedEth2.
		dhcp_v4interface().
		SetName("p1d1dhcpv4").
		SetEthName(d1ChainedEth2.Name())
	
	// add protocol stacks for device d2
	d2Eth1 := d2.Ethernets().
		Add().
		SetName("p2d1eth").
		SetMac("00:00:02:02:02:02").
		SetMtu(1500)

	d2Eth1.Connection().SetPortName(p2.Name())

	d2p2Ipv4 := d2Eth1.
		Ipv4Addresses().
		Add().
		SetName("p2d1ipv4").
		SetAddress("2.2.2.2").
		SetGateway("2.2.2.1").
		SetPrefix(24)

	d2p2DhcpServerv4Iface1 := d2.DhcpServer().V4Server().
		Ipv4Interfaces().Add().
		SetIpv4Name("p2d1ipv4") //

	p2d2DhcpV4Server := d2Dhcpv4Iface1.
		v4().
		SetName("p2d2DhcpV4Server")

	p2d2DhcpV4Server.SetLeaseTime(1000).
		SetPoolSize(100).
		SetStartPoolAddress("100.1.1.2").
		SetPrefix(24).
		SetStep(1)

	// add endpoints and packet description flow 1
	f1 := config.Flows().Items()[0]
	f1.SetName(p1.Name() + " -> " + p2.Name()).
		TxRx().Device().
		SetTxNames([]string{p1d1DhcpV4Client.Name()}).
		SetRxNames([]string{d2p2DhcpServerv4Iface1.Ipv4Name()})

	f1Eth := f1.Packet().Add().Ethernet()
	f1Eth.Src().SetValue(d1Eth1.Mac())
	f1Eth.Dst().Auto()

	f1Ip := f1.Packet().Add().Ipv4()
	f1Ip.Src().AutoDhcp()
	f1Ip.Dst().SetValue("2.2.2.2")

	// add endpoints and packet description flow 2
	f2 := config.Flows().Items()[1]
	f2.SetName(p2.Name() + " -> " + p1.Name()).
		TxRx().Device().
		SetTxNames([]string{p2d2DhcpV4Server.Name()}).
		SetRxNames([]string{p1d1DhcpV4Client.ConnEthName()})

	f2Eth := f2.Packet().Add().Ethernet()
	f2Eth.Src().SetValue(d2Eth1.Mac())
	f2Eth.Dst().Auto()

	f2Ip := f2.Packet().Add().Ipv4()
	f2Ip.Src().SetValue("2.2.2.2")
	f2Ip.Dst().AutoDhcp()

//Case-3: BGP over DHCP Client on Port 1 & DHCP Server and BGP peer (over loopback)on Port2.
config := gosnappi.NewConfig()

	// add ports
	p1 := config.Ports().Add().SetName("p1").SetLocation(opts.IxiaCPorts()[0])
	p2 := config.Ports().Add().SetName("p2").SetLocation(opts.IxiaCPorts()[1])

	// add devices
	d1 := config.Devices().Add().SetName("p1d1")
	d2 := config.Devices().Add().SetName("p2d1")
	p2Chained1 := config.Devices().Add().SetName("p2_chained1")

	// add protocol stacks for device d1
	d1Eth1 := d1.Ethernets().
		Add().
		SetName("p1d1eth").
		SetMac("00:00:01:01:01:01").
		SetMtu(1500)

	d1Eth1.Connection().SetPortName(p1.Name())

	p1d1DhcpV4Client := d1Eth1.
		dhcp_v4interface().
		SetName("p1d1dhcpv4").
		SetEthName(d1Eth1.Name())
	
	d1Bgp := d1.Bgp().
		SetRouterId("1.1.1.2")

	// Link with DHCP Client name
	d1BgpIpv4Interface1 := d1Bgp.
		Ipv4Interfaces().Add().
		SetIpv4Name(p1d1DhcpV4Client.Name())

	d1BgpIpv4Interface1Peer1 := d1BgpIpv4Interface1.
		Peers().
		Add().
		SetAsNumber(2222).
		SetAsType(gosnappi.BgpV4PeerAsType.EBGP).
		SetPeerAddress("22.22.22.1").
		SetName("p1d1bgpv4")

	d1BgpIpv4Interface1Peer1V4Route1 := d1BgpIpv4Interface1Peer1.
		V4Routes().
		Add().
		SetNextHopIpv4Address("1.1.1.2").
		SetName("p1d1peer1rrv4").
		SetNextHopAddressType(gosnappi.BgpV4RouteRangeNextHopAddressType.IPV4).
		SetNextHopMode(gosnappi.BgpV4RouteRangeNextHopMode.MANUAL)

	d1BgpIpv4Interface1Peer1V4Route1.Addresses().Add().
		SetAddress("100.10.10.1").
		SetPrefix(32).
		SetCount(4).
		SetStep(1)

	d1BgpIpv4Interface1Peer1V4Route1.Advanced().
		SetMultiExitDiscriminator(50).
		SetOrigin(gosnappi.BgpRouteAdvancedOrigin.EGP)

		// add protocol stacks for device d2
	d2Eth1 := d2.Ethernets().
		Add().
		SetName("p2d1eth").
		SetMac("00:00:02:02:02:02").
		SetMtu(1500)

	d2Eth1.Connection().SetPortName(p2.Name())

	d2p2Ipv4 := d2Eth1.
		Ipv4Addresses().
		Add().
		SetName("p2d1ipv4").
		SetAddress("2.2.2.2").
		SetGateway("2.2.2.1").
		SetPrefix(32)

	d2p2DhcpServerv4Iface1 := d2.DhcpServer().V4Server().
		Ipv4Interfaces().Add().
		SetIpv4Name("p2d1ipv4") //

	p2d2DhcpV4Server := d2Dhcpv4Iface1.
		v4().
		SetName("p2d2DhcpV4Server")

	p2d2DhcpV4Server.SetLeaseTime(1000).
		SetPoolSize(100).
		SetStartPoolAddress("21.21.21.1").
		SetPrefix(24).
	SetStep(1)

// Port2 first chained device.
	p2Lo1 := p2Chained1.Ipv4Loopbacks().
		Add().
		SetName("p2chaineddev1.v4lo1").
		SetAddress("22.22.22.1").
		SetEthName(d1Eth1.Name())

	p2Lo1Bgp := p2Chained1.Bgp().
		SetRouterId(p2Lo1.Address())

	p2Lo1BgpIpv4Interface1 := p2Lo1Bgp.
		Ipv4Interfaces().Add().
		SetIpv4Name("p2chaineddev1.v4lo1")

	p2Lo1BgpIpv4Interface1Peer1 := p2Lo1BgpIpv4Interface1.
		Peers().
		Add().
		SetAsNumber(1111).
		SetAsType(gosnappi.BgpV4PeerAsType.IBGP).
		SetPeerAddress("21.21.21.1").
		SetName("p2lo1bgpv4")

	p2Lo1BgpIpv4Interface1Peer1V4Route1 := p2Lo1BgpIpv4Interface1Peer1.
		V4Routes().
		Add().
		SetName("p2lo1peer1rrv4")

	p2Lo1BgpRrAddr := p2Lo1BgpIpv4Interface1Peer1V4Route1.Addresses().Add().
		SetAddress("200.1.1.1").
		SetPrefix(32)

	p2Lo1BgpIpv4Interface1Peer1V4Route1.Advanced().
		SetMultiExitDiscriminator(50).
		SetOrigin(gosnappi.BgpRouteAdvancedOrigin.EGP)

`

…tor/models into dhcp_support

…ator/models into dhcp_support2

…changes and stats

SuryyaKrJana and others added 17 commits March 7, 2024 15:23

dhcp draft proposal model

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Alternative approach for dhcp support by introducing chained ethernet

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SuryyaKrJana requested review from apratimmukherjee, alakendu, PrasenjitAdhikary, SouravSinhaRoy and biplamal March 11, 2024 11:26

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Alternative approach for dhcp support by introducing chained ethernet. #360

Alternative approach for dhcp support by introducing chained ethernet. #360

SuryyaKrJana commented Mar 11, 2024 •

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