TRex first time configuration 
=============================
:author: hhaim with the Help of  Amir Kroparo 
:email: <hhaim@cisco.com> 
:description: TRex Getting started - instalation guide
:revdate: 2014-11-01
:revnumber: 0.1
:deckjs_theme: swiss
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:scrollable:

include::trex_ga.asciidoc[]


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== Simple configuration 

* TRex does not implement ARP emulation 
* This guide will help you to configure Cisco ASR1K to work with TRex
* TRex is directly connected to ASR1K ports. 

image::images/TrexConfig.png[title="TRex/Router setup"]
. TRex port 0 - Client side
. Router TenG 0/0/0 
. Router TenG 0/0/1
. TRex port 1 - Server side
 

== TRex configuration 

* TRex act as both client and server side 
* TRex port mac address should configure correctly, so packet generated from port 1 will get to 2 and vice-versa
* To use the config file you can add this switch `--cfg [file]` 
* Or edit the configuration file in `/etc/trex_cfg.yaml`

[source,python]
----
 - port_limit      : 2    
    port_info       :  # set eh mac addr 
    - dest_mac        :   [0x0,0x0,0x0,0x1,0x0,0x00] <1>
      src_mac         :   [0x0,0x0,0x0,0x2,0x0,0x00] <2>
    - dest_mac        :   [0x0,0x0,0x0,0x3,0x0,0x00] <3>
      src_mac         :   [0x0,0x0,0x0,0x4,0x0,0x00] <4>
----
<1>  Correspond to TRex port 0 - should be Router TenG 0/0/0 mac-address
<2>  Should be distinc mac-address, router should be configure to sent to this mac-address
<3>  Correspond to TRex port 1 - should be Router TenG 0/0/1 mac-address
<4>  Should be distinc mac-address, router should be configure to sent to this mac-address


== Router configuration PBR part 1

* Router moves packets from port 0->1 and 1->0 without looking into IP address.

* TenG 0/0/0 <-> TenG 0/0/1

*Router configuration:*::

[source,python]
----
interface TenGigabitEthernet0/0/0
 mac-address 0000.0001.0000                     <1>
 mtu 4000                                       <2>
 ip address 11.11.11.11 255.255.255.0           <3>
 ip policy route-map p1_to_p2                   <4>
 load-interval 30
!

interface TenGigabitEthernet0/0/1
 mac-address 0000.0003.0000                     <5>     
 mtu 4000                                       
 ip address 12.11.11.11 255.255.255.0           
 ip policy route-map p2_to_p1                   
 load-interval 30
!
----
<1> Configure mac-address to match TRex destination port-0
<2> Set MTU 
<3> Set an ip address ( routing can't work without this)
<4> Configure PBR policy - see next slide
<5> Configure mac-address to match TRex destination port-1

== Router configuration PBR part 2

[source,python]
----

route-map p1_to_p2 permit 10
 set ip next-hop 12.11.11.12    <1>
!
route-map p2_to_p1 permit 10
 set ip next-hop 11.11.11.12    <2>

----

<1> Set the destination packet to be 12.11.11.12 which correspond to TenG 0/0/1
<2> Set the destination packet to be 11.11.11.12 which correspond to TenG 0/0/0


== Router configuration PBR part 3

* What about destination mac-address it should be TRex source mac-address?
* The folowing configuration address it

[source,python]
----
 arp 11.11.11.12 0000.0002.0000 ARPA  <1>
 arp 12.11.11.12 0000.0004.0000 ARPA  <2>
----
<1> Destination mac-address of packets sent from If 0/0/0 is matched to TRex source mac-address port-0
<2> Destination mac-address of packets sent from If 0/0/1 is matched to TRex source mac-address port-1

== Static-route configuration - TRex 

* You can set static range of IPs for client and server side 

[source,python]
----
generator :  
  distribution : "seq"  
  clients_start : "16.0.0.1"
  clients_end   : "16.0.0.255"
  servers_start : "48.0.0.1"
  servers_end   : "48.0.0.240"
  dual_port_mask : "1.0.0.0"  
  tcp_aging      : 0
  udp_aging      : 0
----

* In this example, you should expect:
** Number of clients   255
** Number of servers   240

== Static-route configuration - Router 

[source,python]
----
interface TenGigabitEthernet0/0/0       
 mac-address 0000.0001.0000
 mtu 4000 
 ip address 11.11.11.11 255.255.255.0
!         
`
interface TenGigabitEthernet0/0/1       
 mac-address 0000.0003.0000
 mtu 4000 
 ip address 22.11.11.11 255.255.255.0
!         
ip route 16.0.0.0 255.0.0.0 11.11.11.12  <1>
ip route 48.0.0.0 255.0.0.0 22.11.11.12  <2>
----
<1> Match the range of TRex YAML ( client side 0/0/0 )
<2> Match the range of TRex YAML ( server side 0/0/1)

== Verify configuration 

* To verify that TRex port-0 is connected to Router 0/0/0 and not 0/0/1 run

...........................................
$./t-rex-64 -f cap2/dns.yaml -m 1  -d 100  -l 1000 --lo --lm 1
...........................................
* It sends packets only from TRex port-0 ( `--lm 1` ) 


* to send only from TRex port 1 do this:
...........................................
$./t-rex-64 -f cap2/dns.yaml -m 1  -d 100  -l 1000 --lo --lm 2
...........................................

* In case you are connected to a Switch you must send packet from both direction first 

...........................................
$./t-rex-64 -f cap2/dns.yaml -m 1  -d 100  -l 1000 
...........................................


== Static-route configuration - IPV6

[source,python]
----
interface TenGigabitEthernet1/0/0
 mac-address 0000.0001.0000
 mtu 4000
 ip address 11.11.11.11 255.255.255.0
 ip policy route-map p1_to_p2
 load-interval 30                        
 ipv6 enable                            #<1>
 ipv6 address 2001:DB8:1111:2222::1/64  #<2>
 ipv6 policy route-map ipv6_p1_to_p2    #<3>
!


ipv6 unicast-routing                                          #<4>

ipv6 neighbor 3001::2 TenGigabitEthernet0/1/0 0000.0002.0002  #<5>
ipv6 neighbor 2001::2 TenGigabitEthernet0/0/0 0000.0003.0002

route-map ipv6_p1_to_p2 permit 10                             #<6>
 set ipv6 next-hop 2001::2
!
route-map ipv6_p2_to_p1 permit 10
 set ipv6 next-hop 3001::2
!


csi-mcp-asr1k-40(config)#ipv6 route 4000::/64 2001::2                 
csi-mcp-asr1k-40(config)#ipv6 route 5000::/64 3001::2 
----
<1> Enable ipv6
<2> Add  ipv6 address
<3> Add pbr 
<4> Enable ipv6 routing 
<5> Mac-addr setting should be like TRex
<6> PBR configuraion