################################################################################
# Version 1.0    $Revision: 1 $
# $Author: L. Raicea $
#
#    Copyright © 1997 - 2008 by IXIA
#    All Rights Reserved.
#
#    Revision Log:
#    11-27-2008 L. Raicea
#
################################################################################

################################################################################
#                                                                              #
#                                LEGAL  NOTICE:                                #
#                                ==============                                #
# The following code and documentation (hereinafter "the script") is an        #
# example script for demonstration purposes only.                              #
# The script is not a standard commercial product offered by Ixia and have     #
# been developed and is being provided for use only as indicated herein. The   #
# script [and all modifications, enhancements and updates thereto (whether     #
# made by Ixia and/or by the user and/or by a third party)] shall at all times #
# remain the property of Ixia.                                                 #
#                                                                              #
# Ixia does not warrant (i) that the functions contained in the script will    #
# meet the user's requirements or (ii) that the script will be without         #
# omissions or error-free.                                                     #
# THE SCRIPT IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, AND IXIA        #
# DISCLAIMS ALL WARRANTIES, EXPRESS, IMPLIED, STATUTORY OR OTHERWISE,          #
# INCLUDING BUT NOT LIMITED TO ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR #
# A PARTICULAR PURPOSE OR OF NON-INFRINGEMENT.                                 #
# THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SCRIPT  IS WITH THE #
# USER.                                                                        #
# IN NO EVENT SHALL IXIA BE LIABLE FOR ANY DAMAGES RESULTING FROM OR ARISING   #
# OUT OF THE USE OF, OR THE INABILITY TO USE THE SCRIPT OR ANY PART THEREOF,   #
# INCLUDING BUT NOT LIMITED TO ANY LOST PROFITS, LOST BUSINESS, LOST OR        #
# DAMAGED DATA OR SOFTWARE OR ANY INDIRECT, INCIDENTAL, PUNITIVE OR            #
# CONSEQUENTIAL DAMAGES, EVEN IF IXIA HAS BEEN ADVISED OF THE POSSIBILITY OF   #
# SUCH DAMAGES IN ADVANCE.                                                     #
# Ixia will not be required to provide any software maintenance or support     #
# services of any kind (e.g., any error corrections) in connection with the    #
# script or any part thereof. The user acknowledges that although Ixia may     #
# from time to time and in its sole discretion provide maintenance or support  #
# services for the script, any such services are subject to the warranty and   #
# damages limitations set forth herein and will not obligate Ixia to provide   #
# any additional maintenance or support services.                              #
#                                                                              #
################################################################################

################################################################################
#                                                                              #
# Description:                                                                 #
#    This sample configures 10 L2TP tunnels with 10 sessions each between the  #
#    first Ixia port and DUT. Traffic is sent between the two Ixia ports.      #
#    Topology is the following:                                                #
#                                                                              #
#      Access     PPPoE        L2TPoE                         Destination      #
#      Network   -------- LAC ---------- LNS(DUT) -----------   Network        #
#    (Ixia Port1)     (Ixia Port1)     (Cisco 7200)           (Ixia Port1)     #
#                                                                              #
#                                                                              #
# Module:                                                                      #
#    The sample was tested on a LM1000STXS4 module.                            #
#                                                                              #
################################################################################

################################################################################
# DUT configuration:                                                           #
#                                                                              #
# username cisco password 0 cisco
# aaa new-model
# 
# aaa authentication login telnet enable
# aaa authentication ppp default local
# aaa session-id common
# ip subnet-zero
# no ip gratuitous-arps
# no ip domain lookup
# 
# ip multicast-routing
# ip cef
# 
# vpdn enable
# vpdn ip udp ignore checksum
# 
# vpdn-group LNS
#  accept-dialin
#   protocol l2tp
#   virtual-template 1
#  local name lac
#  l2tp tunnel password 0 cisco
#  l2tp tunnel timeout no-session 1
# 
# bba-group pppoe global
#  virtual-template 1
# 
# interface Loopback1
#  ip address 54.0.0.1 255.255.255.0
# 
# interface GigabitEthernet0/2
#  ip address 12.70.0.1 255.255.255.0
#  no ip mroute-cache
#  duplex half
#  pppoe enable group global
#  no keepalive
# 
# interface GigabitEthernet0/3
#  ip address 12.80.0.1 255.255.255.0
#  no ip mroute-cache
#  duplex half
#  no keepalive
# 
# interface Virtual-Template1
#  mtu 1458
#  ip unnumbered Loopback1
#  no logging event link-status
#  no snmp trap link-status
#  peer default ip address pool pool1
#  no keepalive
#  ppp max-bad-auth 10
#  ppp mtu adaptive
#  ppp authentication chap pap
#  ppp timeout retry 15
#  ppp timeout authentication 15
# 
# ip local pool pool1 54.0.0.2 54.0.0.254
# 
# ip classless
# no ip http server
# 
# line vty 0 16
#  exec-timeout 0 0
#  login authentication telnet
# end
#                                                                              #
################################################################################

set env(IXIA_VERSION) HLTSET43
package require Ixia

set test_name [info script]

set chassisIP 10.205.19.228
set port_list [list 7/3 7/4]

set session_count 100
set tunnel_count  10
set sessions_per_tunnel [expr $session_count / $tunnel_count]
################################################################################
# Connect to the chassis, reset to factory defaults and take ownership         #
################################################################################
# When using P2NO HLTSET, for loading the IxTclNetwork package please 
# provide –ixnetwork_tcl_server parameter to ::ixia::connect
set connect_status [::ixia::connect             \
        -reset                                  \
        -ixnetwork_tcl_server   localhost       \
        -device                 $chassisIP      \
        -port_list              $port_list      \
        -username               ixiaApiUser     ]
if {[keylget connect_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget connect_status log]"
}

set port_handle [list]
foreach port $port_list {
    if {![catch {keylget connect_status port_handle.$chassisIP.$port} \
                temp_port]} {
        lappend port_handle $temp_port
    }
}

set access_port  [lindex $port_handle 0]
set network_port [lindex $port_handle 1]

################################################################################
# Configure access interfaces in the test
################################################################################
set port_handle_list  $access_port
set intf_ip_addr_list ""
set gateway_list      ""
set speed_list        auto
set duplex_list       auto
set auto_list         1
set phy_mode_list     copper
set netmask_list      ""
set src_mac_addr_list ""
set interface_status [::ixia::interface_config \
        -port_handle      $port_handle_list    \
        -mode             config               \
        -speed            $speed_list          \
        -duplex           $duplex_list         \
        -phy_mode         $phy_mode_list       \
        -autonegotiation  $auto_list           \
        ]
if {[keylget interface_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget interface_status log]"
}

################################################################################
# Configure network interface in the test
################################################################################
set port_handle_list  $network_port
set intf_ip_addr_list 12.80.0.2
set gateway_list      12.80.0.1
set speed_list        auto
set duplex_list       auto
set phy_mode_list     copper
set auto_list         1
set netmask_list      255.255.255.0
set src_mac_addr_list 00cd.00cd.cdcd

set interface_status [::ixia::interface_config \
        -port_handle      $port_handle_list    \
        -mode             config               \
        -speed            $speed_list          \
        -duplex           $duplex_list         \
        -phy_mode         $phy_mode_list       \
        -autonegotiation  $auto_list           \
        -intf_ip_addr     $intf_ip_addr_list   \
        -gateway          $gateway_list        \
        -netmask          $netmask_list        \
        -src_mac_addr     $src_mac_addr_list]
if {[keylget interface_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget interface_status log]"
}
set int_handle [keylget interface_status interface_handle]

################################################################################
# Configure L2TP on the access port                                            #
################################################################################
set l2tp_status [::ixia::l2tp_config                                            \
        -port_handle                $access_port                                \
        -mode                       lac                                         \
        -l2_encap                   ethernet_ii                                 \
        -num_tunnels                $tunnel_count                               \
        -sessions_per_tunnel        $sessions_per_tunnel                        \
        -l2tp_src_addr              12.70.0.2                                   \
        -l2tp_dst_addr              12.70.0.1                                   \
        -l2tp_src_count             $tunnel_count                               \
        -l2tp_src_step              0.0.0.1                                     \
        -l2tp_dst_step              0.0.0.0                                     \
        -tun_distribution           next_tunnelfill_tunnel                      \
        -attempt_rate               100                                         \
        -tun_auth                                                               \
        -hostname                   lac                                         \
        -secret                     cisco                                       \
        -auth_mode                  chap                                        \
        -username                   cisco                                       \
        -password                   cisco                                       \
        ]
if {[keylget l2tp_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget l2tp_status log]"
}

set l2tp_handle [keylget l2tp_status handle]
puts "L2TP handle is $l2tp_handle "

################################################################################
# Connect sessions
################################################################################
set control_status [::ixia::l2tp_control  \
        -handle     $l2tp_handle          \
        -action     connect               ]
if {[keylget control_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget control_status log]"
}

################################################################################
# Get L2TP session/tunnel aggregate statistics
################################################################################
puts "Waiting for sessions and tunnels to establish ..."
set l2tp_attempts   0
set l2tp_tunnels_up 0
while {($l2tp_tunnels_up < $session_count)} {
    after 10000
    set l2tp_status [::ixia::l2tp_stats \
            -handle  $l2tp_handle       \
            -mode    aggregate          ]
    if {[keylget l2tp_status status] != $::SUCCESS} {
        return "FAIL - $test_name - [keylget l2tp_status log]"
    }

    set  aggregate_stats [keylget l2tp_status $access_port.aggregate]
    set  l2tp_tunnels_up [keylget aggregate_stats sessions_up]
    incr l2tp_attempts
}

set statList {
    idle
    connecting
    num_sessions
    connected
    connect_success
    sessions_up
    tunnels_up
    tunnels_neg
    success_setup_rate
    min_setup_time
    max_setup_time
    avg_setup_time
}

puts "\n"
puts [format "%-41s" "[string repeat * 14] L2TPoE STATS [string repeat * 13]"]
puts ""
puts [format "%-30s %-10s" Statistic Value]
puts [format "%-41s" [string repeat "-" 41]]

foreach {key} $statList {
    if {![catch {keylget aggregate_stats $key}]} {
        puts [format "%-30s | %-10d" $key [keylget aggregate_stats $key]]
    }
}
################################################################################
# Configure bidirectional traffic
################################################################################
set traffic_status [::ixia::traffic_config      \
        -mode                 create            \
        -traffic_generator    ixnetwork         \
        -bidirectional        1                 \
        -emulation_src_handle $l2tp_handle      \
        -emulation_dst_handle $int_handle       \
        -track_by             endpoint_pair     \
        -l3_protocol          ipv4              \
        -frame_size           1014              \
        -rate_percent         20                \
        -transmit_mode        continuous        \
        ]
if {[keylget traffic_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget traffic_status log]"
}

################################################################################
# Clear traffic stats
################################################################################
set control_status [::ixia::traffic_control \
        -port_handle       $port_handle     \
        -action            clear_stats      \
        -traffic_generator ixnetwork        \
        ]
if {[keylget control_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget control_status log]"
}

################################################################################
# Start traffic 
################################################################################
set control_status [::ixia::traffic_control \
        -port_handle       $port_handle     \
        -action            run              \
        -traffic_generator ixnetwork        \
        ]
if {[keylget control_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget control_status log]"
}

after 60000

################################################################################
# Stop traffic
################################################################################
set control_status [::ixia::traffic_control \
        -port_handle       $port_handle     \
        -action            stop             \
        -traffic_generator ixnetwork        \
        ]
if {[keylget control_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget control_status log]"
}

###############################################################################
#   Retrieve aggregate stats after traffic stopped
###############################################################################
set aggregate_stats [::ixia::traffic_stats \
        -mode              aggregate       \
        -port_handle       $port_handle    \
        -traffic_generator ixnetwork       \
        ]
if {[keylget aggregate_stats status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget aggregate_stats log]"
}

proc post_stats {port_handle label key_list stat_key {stream ""}} {
    puts -nonewline [format "%-16s" $label]

    foreach port $port_handle {
        if {$stream != ""} {
            set key $port.stream.$stream.$stat_key
        } else {
            set key $port.$stat_key
        }

        puts -nonewline "[format "%-16s" [keylget key_list $key]]"
    }
    puts ""
}

puts "\n******************* TX/RX STATS **********************"
puts "\t\t$access_port\t\t$network_port"
puts "\t\t-----\t\t-----"


post_stats $port_handle "Packets Tx"     $aggregate_stats aggregate.tx.pkt_count
post_stats $port_handle "Bytes Tx"       $aggregate_stats aggregate.tx.pkt_byte_count
post_stats $port_handle "Packets Rx"     $aggregate_stats aggregate.rx.pkt_count
post_stats $port_handle "Collisions"     $aggregate_stats aggregate.rx.collisions_count

puts "******************************************************\n"

############################################################################
# Disconnect sessions
############################################################################
puts "Disconnecting sessions ... "

set control_status [::ixia::l2tpox_control \
        -handle     $l2tp_handle          \
        -action     disconnect            ]
if {[keylget control_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget control_status log]"
}

set cleanup_status [::ixia::cleanup_session -port_handle $port_handle -reset]

if {[keylget cleanup_status status] != $::SUCCESS} {
    return "FAIL - $test_name - [keylget cleanup_status log]"
}

return "SUCCESS - $test_name - [clock format [clock seconds]]"