ytti

Keybase proof

I hereby claim:

• I am ytti on github.
• I am ytti (https://keybase.io/ytti) on keybase.
• I have a public key whose fingerprint is 91F0 68C8 5A1C 0C10 1AE0 BE2B E870 F16A 810A E277

To claim this, I am signing this object:

ytti

#!/usr/bin/env ruby

## Example run: (omitting DST will show cost+path to all dsts)
## [ytti@eng0.dllstx09.us.to.gin.ntt.net ~/git/misc]% ./spf.rb r23.snjsca04.us.bb r20.frnkge04.de.bb
## ---
## r20.frnkge04.de.bb:
##   cost: 155152
##   path:
##   - r23.snjsca04.us.bb
##   - r22.snjsca04.us.bb

ytti

#!/usr/bin/env ruby

# this requires ruby2.0, if important I'll package this

require 'pty'
require 'expect'
require 'ipaddr'
require 'json'
require 'pry'
require 'pp'

ytti

#!/usr/bin/env ruby

require 'ntt/junos/xmlssh'
require 'pry'

class GetTopology
  HOST    = 'r00.testtx09.us.bb'
  COMMAND = 'show isis database detail'

  attr_reader :nodes, :edges

ytti

#!/usr/bin/env ruby

##  1) capture data => monitor np counter MDF_PUNT_POLICE_DROP np0 count 25 location 0/2/CPU0
##
##  2) You'll need 'text2pcap' => sudo apt-get install wireshark-common
##
##  3) Run with file as argument:
##  [ytti@lintukoto ~/tmp/ios-xr-npu-monitor-pcap]% ./xr2pcap.rb r04.miamfl02.us.bb.MDF_PUNT_POLICE_DROP.ioscap
##  Input from: r04.miamfl02.us.bb.MDF_PUNT_POLICE_DROP.txt
##  Output to: r04.miamfl02.us.bb.MDF_PUNT_POLICE_DROP.pcap

ytti

#!/usr/bin/env ruby

# script to generate PCAP from Trio exception trace. Potentially you may need to change POP_BYTES variable.
# Trio exception trace allows you to capture things like broken packets (checksum error), to see who is sending them

# clogin junos-trio-box | tee exception_trace
# start shell pfe network fpc0
# show jnh 0 exceptions terse
# debug jnh exceptions N discard    ## get N from above command
# debug jnh exceptions-trace

ytti

#!/usr/bin/env ruby

# your IP header
DATA = [0x4501, 0x0028, 0x87ea, 0x4000, 0x3006, 0x5bfd, 0xXXXX, 0xXXXX, 0xXXXX, 0xXXXX]
IS   = DATA[5]    # checksum on the packet
WANT = 0x5bfc     # checksum you want

# output

# (here we can see that packet had ECN bit set, but had it not had, checksum would be correct)

ytti

#!/usr/bin/env ruby

module NetMonte

STANDARD_DEVIATION = 2.5
MINUTES = 365*24*60

class Simulate
  def initialize years, *networks
    years.times do |year|

ytti

module NetMonte

STANDARD_DEVIATION = 2.5
MINUTES = 365*24*60

class Simulate
  def initialize(years, *networks)
    years.times do |year|
      nets = init_networks networks
      roulette year, nets

ytti

#!/usr/bin/env ruby

## 1) ssh asr9k | tee spp.capture
## 2) do spp/netio capture in asr9k
## 3) ./sppcapture.rb spp.capture
## 4) text2pcap spp.capture.packet spp.capture.pcap
## 5) open spp.capture.pcap

class SPPCapture
  FILE_EXTENSION = 'packet'