#!/usr/bin/tclsh
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#                                                                              #
#    Copyright 1997 - 2020 by IXIA  Keysight                                   #
#    All Rights Reserved.                                                      #
#                                                                              #
################################################################################


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#                                                                              #
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#                                ==============                                #
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# example script for demonstration purposes only.                              #
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################################################################################

################################################################################
#                                                                              #
# Description:                                                                 #
#    This script intends to demonstrate how to use NGPF BGP API to configure   #
#     L3vpn interAS OptionC Scenario.                                          #
#                                                                              #
#    1. It will create a BGP topology with LDP & OSPF configured in Provider   #
#        Router.                                                               #
#    2. In Provider Edge Router configuration 2 BGP Peer are configured.       #
#       - iBGP Peer                                                            #
#       - eBGP Peer to configure Multi Hop BGP session.                        # 
#    3. Only one side configuration is provided.                               #
#    4. Traffic configuration will be similar to L3VPN scenario.               #
################################################################################

# Script Starts
puts "!!!L3VPN Option C Test Script Starts !!!"

# Edit this variables values to match your setup
namespace eval ::ixia {
    set ixTclServer 10.216.108.113
    set ixTclPort   8650
    set ports       {{10.216.108.82 7 11} { 10.216.108.82 7  12}}
}

puts "Load ixNetwork Tcl API package"
package req IxTclNetwork

puts "Connect to IxNetwork Tcl server"
ixNet connect $::ixia::ixTclServer -port $::ixia::ixTclPort -version 8.20\
    setAttribute strict

puts "Creating a new config"
ixNet exec newConfig

################################################################################
# 1. Configure L3VPN Inter AS Option C per the description give above
################################################################################ 
puts "Adding vport"
ixNet add [ixNet getRoot] vport
ixNet commit

set vPorts [ixNet getList [ixNet getRoot] vport]
set vportTx [lindex $vPorts 0]

puts "Adding topology"
ixNet add [ixNet getRoot] topology -vports $vportTx
ixNet commit

set topologies [ixNet getList [ixNet getRoot] topology]
set topo1 [lindex $topologies 0]

puts "Adding device groups"
ixNet add $topo1 deviceGroup
ixNet commit

set t1devices [ixNet getList $topo1 deviceGroup]

set t1dev1 [lindex $t1devices 0]

puts "Configuring the multipliers (number of sessions)"
ixNet setAttr $t1dev1 -multiplier 1
ixNet commit

puts "Adding ethernet/mac endpoints"
ixNet add $t1dev1 ethernet
ixNet commit

set mac1 [ixNet getList $t1dev1 ethernet]

puts "Configuring the mac addresses"
ixNet setMultiAttr [ixNet getAttr $mac1 -mac]/counter\
        -direction  increment                        \
        -start      {18:03:73:C7:6C:B1}              \
        -step       {00:00:00:00:00:01}

ixNet commit

# puts "ixNet help ::ixNet::OBJ-/topology/deviceGroup/ethernet"
# puts "[ixNet help ::ixNet::OBJ-/topology/deviceGroup/ethernet]"

puts "Add ipv4"
ixNet add $mac1 ipv4
ixNet commit

set ip1 [ixNet getList $mac1 ipv4]

set mvAdd1 [ixNet getAttr $ip1 -address]
set mvGw1  [ixNet getAttr $ip1 -gatewayIp]

puts "configuring ipv4 addresses"
ixNet setAttr $mvAdd1/singleValue -value "20.20.20.2"
ixNet setAttr $mvGw1/singleValue  -value "20.20.20.1"

ixNet setAttr [ixNet getAttr $ip1 -prefix]/singleValue -value 24

ixNet setMultiAttr [ixNet getAttr $ip1 -resolveGateway]/singleValue -value true
ixNet commit

# puts "ixNet help ::ixNet::OBJ-/topology/deviceGroup/ethernet/ipv4"
# puts "[ixNet help ::ixNet::OBJ-/topology/deviceGroup/ethernet/ipv4]"

puts "Adding OSPF over IP4 stacks"
ixNet add $ip1 ospfv2
ixNet commit

set ospf1 [ixNet getList $ip1 ospfv2]

puts "Adding LDP over IP4 stacks"
ixNet add $ip1 ldpBasicRouter
ixNet commit

set ldp1 [ixNet getList $ip1 ldpBasicRouter]

puts "Renaming the topologies and the device groups"
ixNet setAttr $topo1  -name "L3vpn_interAS_OptionC_Topology"

ixNet setAttr $t1dev1 -name "Provider Router"
ixNet commit

# puts "ixNet help ::ixNet::OBJ-/topology/deviceGroup/ethernet/ipv4/ldp"
# puts "[ixNet help ::ixNet::OBJ-/topology/deviceGroup/ethernet/ipv4/ldp]"

puts "Adding NetworkGroup behind Provider Router DG"
ixNet exec createDefaultStack $t1devices ipv4PrefixPools

set networkGroup1 [lindex [ixNet getList $t1devices networkGroup] 0]

ixNet setAttr $networkGroup1 -name "Network_Group"
ixNet setAttr $networkGroup1 -multiplier "1"

set LdpPrefixPool1 [ixNet getList $networkGroup1 ipv4PrefixPools]

puts "Configuring LDP prefixes"
ixNet setAttr [ixNet getAttr $LdpPrefixPool1 -networkAddress]/singleValue -value 2.2.2.2
ixNet commit

# Add Chanied DG behind LDP NetworkGroup
puts "Add Chained DG behind LDP NetworkGroup"
set chainedDg1 [ixNet add $networkGroup1 deviceGroup]
ixNet setMultiAttribute $chainedDg1\
    -multiplier 1\
    -name {Provider Edge Router}
ixNet commit
set chainedDg1 [lindex [ixNet remapIds $chainedDg1] 0]

# Add ipv4 loopback in Chained DG 
puts "Adding ipv4 loopback in Chained DG"
set loopback1 [ixNet add $chainedDg1 "ipv4Loopback"]
ixNet setMultiAttribute $loopback1\
    -stackedLayers [list]\
    -name {IPv4 Loopback 1}
ixNet commit

set connector1 [ixNet add $loopback1 "connector"]
ixNet setMultiAttribute $connector1\
    -connectedTo $networkGroup1/ipv4PrefixPools:1
ixNet commit
set connector1 [lindex [ixNet remapIds $connector1] 0]

set addressSet1 [ixNet getAttribute $loopback1 -address]
ixNet setMultiAttribute $addressSet1\
    -clearOverlays false\
    -pattern counter
ixNet commit

set addressSet1 [ixNet add $addressSet1 "counter"]
ixNet setMultiAttribute $addressSet1\
    -step 0.0.0.1\
    -start 2.2.2.2\
    -direction increment
ixNet commit
set addressSet1 [lindex [ixNet remapIds $addressSet1] 0]

# Adding BGP over IPv4 loopback interface (multi Hop eBGP Peer)
puts "Adding BGP over IPv4 loopback interface"
ixNet add $loopback1 bgpIpv4Peer
ixNet commit

set ebgp [lindex [ixNet getList $loopback1 bgpIpv4Peer] 0]

# Changing bgp type to external
puts "Changing bgp type to external"
set type [ixNet getAttr $ebgp -type]
set activeMvOverLay1 [ixNet add $type overlay]
ixNet setMultiAttribute $activeMvOverLay1 -count 1 -index 1 -value external
ixNet commit

# Changing name of eBGP Peer
ixNet setAttr $ebgp -name "Multihop eBGP Peer"
ixNet commit

puts "Setting IPs in BGP DUT IP tab"
ixNet setAttr [ixNet getAttr $ebgp -dutIp]/singleValue -value "3.2.2.2"
ixNet commit

# Adding another BGP over IPv4 loopback interfaces (iBGP Peer)
puts "Adding BGP over same IPv4 loopback interface"
ixNet add $loopback1 bgpIpv4Peer
ixNet commit

set ibgp [lindex [ixNet getList $loopback1 bgpIpv4Peer] 1]

# Changing name of iBGP Peer
ixNet setAttr $ibgp -name "iBGP Peer"
ixNet commit

puts "Setting IPs in BGP DUT IP tab"
ixNet setAttr [ixNet getAttr $ibgp -dutIp]/singleValue -value "4.2.2.2"
ixNet commit

# Enabling IPv4 MPLS Capability in iBGP Peer
puts "Enabling IPv4 MPLS Capability in iBGP Peer"
ixNet setMultiAttribute $ibgp -ipv4MplsCapability true
ixNet commit

puts "Enabling L3VPN Learned Information filters for BGP Router"
ixNet setAttr [ixNet getAttr $ebgp -filterIpV4Mpls]/singleValue -value true
ixNet setAttr [ixNet getAttr $ibgp -filterIpV4Mpls]/singleValue -value true
ixNet setAttr [ixNet getAttr $ebgp -filterIpV4MplsVpn]/singleValue -value true
ixNet setAttr [ixNet getAttr $ibgp -filterIpV4MplsVpn]/singleValue -value true
ixNet commit

# Adding VRF over eBGP Peer
puts "Adding VRF over eBGP Peer"
ixNet add $ebgp bgpVrf
ixNet commit

set bgpVrf [ixNet getList $ebgp bgpVrf]

# Adding IPv4 Address Pool behind bgpVrf with name VPN RouteRange(Src)
puts "Adding IPv4 Address Pools behind bgpVrf"
set networkGroup3 [ixNet add $chainedDg1 networkGroup]
ixNet comit
set ipv4PrefixPool1 [ixNet add $networkGroup3 ipv4PrefixPools]
ixNet comit
ixNet setAttr $networkGroup3 -name "VPN RouteRange(Src)"
ixNet setAttr $networkGroup3 -multiplier "1"
ixNet comit

puts "Changing default values of IP prefixes in VPN RouteRange(Src)"
ixNet setAttr [ixNet getAttr $ipv4PrefixPool1 -networkAddress]/singleValue -value "11.11.11.1"
ixNet commit

# Adding another IPv4 Address Pool connected to iBGP Peer
puts "Adding IPv4 Address Pools connected to iBGP Peer"
set networkGroup4 [ixNet add $chainedDg1 networkGroup]
set ipv4PrefixPool2 [ixNet add $networkGroup4 ipv4PrefixPools]
ixNet comit

ixNet setAttr $networkGroup4 -name "eBGP Lpbk Addr(MPLS RR)"
ixNet setAttr $networkGroup4 -multiplier "1"
ixNet comit

puts "Changing default values of IP prefixes in (eBGP Lpbk Addr(MPLS RR))"
ixNet setAttr [ixNet getAttr $ipv4PrefixPool2 -networkAddress]/singleValue -value "2.2.2.2"
ixNet commit

# Change connector to iBGP Peer
puts "Changing BGP Connector in 2nd Prefix pool"
set connector [ixNet add $ipv4PrefixPool2 connector]
ixNet setAttr $connector -connectedTo $ibgp
ixNet commit

# Enabling IPv4 MPLS Capability in iBGP Prefix Pool
puts "Enabling IPv4 MPLS Capability in iBGP Prefix Pool"
set bgpIPRouteProperty [ixNet getList $ipv4PrefixPool2 bgpIPRouteProperty]
ixNet setMultiAttribute $bgpIPRouteProperty -advertiseAsBgp3107 true
ixNet commit

# Changing label start value in iBGP Prefix Pool
puts "Changing label start value in iBGP Prefix Pool"
set labelStart [ixNet getAttribute $bgpIPRouteProperty -labelStart]
ixNet setMultiAttribute $labelStart -clearOverlays false
ixNet commit

set counter [ixNet add $labelStart counter]
ixNet setMultiAttr $counter  -step 5 -start 21 -direction increment
ixNet commit

puts "!!! Configured topology Successfully!!!"
puts "!!! Test Script Ends !!!"