Dhcpv4 support review - Githubissues

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This model is designed to take care of following implementation: 1. DHCP Client & Server are Keysight and Relay Agent as DUT: In this the construct dhcp_v4interfaces and dhcp_v4interfaces are exposed under an Ethernet Interface to configure DHCP Client parameters. The configuration of a DHCP client is placed under Ethernet Interface as parallel to IP configuration as protocol like BGP can be configured referring an IP interface or a DHCP interface. 2. 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.

gNMI Model: https://github.com/open-traffic-generator/models-yang/pull/29 https://github.com/open-traffic-generator/models-yang/blob/dhcpv4-yang/artifacts/open-traffic-generator-dhcpv4client.txt https://github.com/open-traffic-generator/models-yang/blob/dhcpv4-yang/artifacts/open-traffic-generator-dhcpv4server.txt

Path for fetching Client Interface information: // Path from root: "/dhcpv4-clients/dhcpv4-client[name=dhpc4-client1]/state/ // Path from root: "/dhcpv4-clients/dhcpv4-client[name=dhpc4-client1]/state/interface/address" // Path from root: "/dhcpv4-clients/dhcpv4-client[name=dhpc4-client1]/state/interface/prefix-length" // Path from root: "/dhcpv4-clients/dhcpv4-client[name=dhpc4-client1]/state/interface/gateway_address" // Path from root: "/dhcpv4-clients/dhcpv4-client[name=dhpc4-client1]/state/interface/lease_time" // Path from root: "/dhcpv4-clients/dhcpv4-client[name=dhpc4-client1]/state/interface/renew_time"

A code snippet for BGP over DHCP

// OTG (BGP over DHCPv4-Client) // ^ // | // | // v // DUT(Relay Agent/Router with BGP) // ^ // | // | // v // OTG (DHCPv4Server, BGP)

  ```
   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 flows and common properties
for i := 1; i <= 2; i++ {
    flow := config.Flows().Add()
    flow.Metrics().SetEnable(true)
    flow.Duration().FixedPackets().SetPackets(1000)
    flow.Rate().SetPps(500)
}

// 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())

// Configure a DHCP Client
d1Eth1.Dhcpv4Interfaces().Add().
    SetName("p1d1dchpv4client").
    ParametersRequestList().
    SetRebindingTimer(true).
    SetRenewalTimer(true).
    SetRouter(true)

// Configure BGP over a DCHP Interface
d1Bgp := d1.Bgp().
    SetRouterId("1.1.1.2")

d1BgpIpv4Interface1 := d1Bgp.
    Ipv4Interfaces().Add().
    SetIpv4Name("p1d1dchpv4client")

d1BgpIpv4Interface1Peer1 := d1BgpIpv4Interface1.
    Peers().
    Add().
    SetAsNumber(2222).
    SetAsType(gosnappi.BgpV4PeerAsType.EBGP).
    SetPeerAddress("1.1.1.1").
    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("10.10.10.1").
    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())

d2Eth1.
    Ipv4Addresses().
    Add().
    SetName("p2d1ipv4").
    SetAddress("2.2.2.2").
    SetGateway("2.2.2.1").
    SetPrefix(32)
// Configure a DHCP Server
d2Dhcpv4Server := d2.DhcpServer().Ipv4Interfaces().Add().
    SetName("p2d2dhcpv4server")

d2Dhcpv4Server.SetIpv4Name("p2d1ipv4").AddressPools().
    Add().SetName("pool1").
    SetLeaseTime(3600).
    SetStartAddress("1.1.1.2").
    SetStep(1).
    SetCount(5).
    SetPrefixLength(31).
    Options().SetRouterAddress("1.1.1.1")

// Create a loop over Ethernet 2
d2lo1 := d2.Ipv4Loopbacks().
    Add().
    SetName("d2lo1").
    SetAddress("22.22.22.1").
    SetEthName(d2Eth1.Name())

d2Bgp := d2.Bgp().
    SetRouterId("2.2.2.2")

d2BgpIpv4Interface1 := d2Bgp.
    Ipv4Interfaces().Add().
    SetIpv4Name(d2lo1.Name())

d2BgpIpv4Interface1Peer1 := d2BgpIpv4Interface1.
    Peers().
    Add().
    SetAsNumber(3333).
    SetAsType(gosnappi.BgpV4PeerAsType.EBGP).
    SetPeerAddress("2.2.2.1").
    SetName("p2d1bgpv4")

d2BgpIpv4Interface1Peer1V4Route1 := d2BgpIpv4Interface1Peer1.
    V4Routes().
    Add().
    SetNextHopIpv4Address("2.2.2.2").
    SetName("p2d1peer1rrv4").
    SetNextHopAddressType(gosnappi.BgpV4RouteRangeNextHopAddressType.IPV4).
    SetNextHopMode(gosnappi.BgpV4RouteRangeNextHopMode.MANUAL)

d2BgpIpv4Interface1Peer1V4Route1.Addresses().Add().
    SetAddress("20.20.20.1").
    SetPrefix(32).
    SetCount(2).
    SetStep(2)

d2BgpIpv4Interface1Peer1V4Route1.Advanced().
    SetMultiExitDiscriminator(40).
    SetOrigin(gosnappi.BgpRouteAdvancedOrigin.EGP)

// add endpoints and packet description flow 1
f1 := config.Flows().Items()[0]
f1.SetName(p1.Name() + " -> " + p2.Name()).
    TxRx().Device().
    SetTxNames([]string{d1BgpIpv4Interface1Peer1V4Route1.Name()}).
    SetRxNames([]string{d2BgpIpv4Interface1Peer1V4Route1.Name()})

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

f1Ip := f1.Packet().Add().Ipv4()
f1Ip.Src().SetValue("10.10.10.1")
f1Ip.Dst().SetValue("20.20.20.1")

// add endpoints and packet description flow 2
f2 := config.Flows().Items()[1]
f2.SetName(p2.Name() + " -> " + p1.Name()).
    TxRx().Device().
    SetTxNames([]string{d2BgpIpv4Interface1Peer1V4Route1.Name()}).
    SetRxNames([]string{d1BgpIpv4Interface1Peer1V4Route1.Name()})

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

f2Ip := f2.Packet().Add().Ipv4()
f2Ip.Src().SetValue("20.20.20.1")
f2Ip.Dst().SetValue("10.10.10.1")

open-traffic-generator / models

Dhcpv4 support review #371