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== BGP ==
 
== BGP ==
  
−
BGP. Border Gateway Protocol. Únic protocol RGP en funcionament. Entre diferents AS (diferents propietaris ISPs)
+
BGP. Border Gateway Protocol. Únic protocol EGP en funcionament. Entre diferents AS (diferents propietaris ISPs)
  
  
 
Consulta IP Pública
 
Consulta IP Pública
  
−
http://ipecho.net/plain
+
https://api.ipify.org/?format=text
  
  
 
Consulta SA al que pertany IP Pública
 
Consulta SA al que pertany IP Pública
  
 +
Des de terminal amb l'ordre '''whois'''. O també des de l'adreça
 
http://asn.cymru.com/cgi-bin/whois.cgi
 
http://asn.cymru.com/cgi-bin/whois.cgi
  
 +
<pre>
 +
$ whois 176.84.101.61 | grep AS
 +
status:        ASSIGNED PA
 +
mnt-by:        MAINT-AS3352
 +
mnt-by:        MAINT-AS3352
 +
mnt-by:        MAINT-AS3352
 +
% Information related to '176.84.0.0/16AS3352'
 +
origin:        AS3352
 +
mnt-by:        MAINT-AS3352
 +
mnt-routes:    MAINT-AS3352
 +
mnt-lower:      MAINT-AS3352
 +
</pre>
  
−
Consulta Info SA
+
 
 +
Consulta Informació sistemes autònoms (SA). Ranquing CAIDA
  
 
http://as-rank.caida.org/
 
http://as-rank.caida.org/
  
  
−
Exemple accés Router BGP i consulta de dades
+
Exemple accés Router BGP i consulta de dades (Projecte Route views enfocat a la recollida d'informació BGP)
  
  

Revisió del 17:53, 22 abr 2026

torna M7 - Planificació i administració de xarxes

BGP

BGP. Border Gateway Protocol. Únic protocol EGP en funcionament. Entre diferents AS (diferents propietaris ISPs)


Consulta IP Pública

https://api.ipify.org/?format=text


Consulta SA al que pertany IP Pública

Des de terminal amb l'ordre whois. O també des de l'adreça http://asn.cymru.com/cgi-bin/whois.cgi 

$ whois 176.84.101.61 | grep AS
status:         ASSIGNED PA
mnt-by:         MAINT-AS3352
mnt-by:         MAINT-AS3352
mnt-by:         MAINT-AS3352
% Information related to '176.84.0.0/16AS3352'
origin:         AS3352
mnt-by:         MAINT-AS3352
mnt-routes:     MAINT-AS3352
mnt-lower:      MAINT-AS3352


Consulta Informació sistemes autònoms (SA). Ranquing CAIDA

http://as-rank.caida.org/


Exemple accés Router BGP i consulta de dades (Projecte Route views enfocat a la recollida d'informació BGP)


$ telnet route-views.routeviews.org


Exemple de connexió: 

alex@pc-casa:~$ telnet route-views.routeviews.org
Trying 128.223.51.103...
Connected to route-views.routeviews.org.
Escape character is '^]'.

**********************************************************************

                    Oregon Exchange BGP Route Viewer
          route-views.oregon-ix.net / route-views.routeviews.org

 route views data is archived on http://archive.routeviews.org

 This hardware is part of a grant by the NSF.
 Please contact help@routeviews.org if you have questions, or
 if you wish to contribute your view.

 This router has views of full routing tables from several ASes.
 The list of peers is located at http://www.routeviews.org/peers
 in route-views.oregon-ix.net.txt

 NOTE: The hardware was upgraded in August 2014.  If you are seeing
 the error message, "no default Kerberos realm", you may want to
 in Mac OS X add "default unset autologin" to your ~/.telnetrc

 To login, use the username "rviews".

 **********************************************************************

User Access Verification

Username: rviews
route-views>


Consultar la versió 


route-views>show version
Cisco IOS XE Software, Version 03.14.00.S - Standard Support Release
Cisco IOS Software, ASR1000 Software (X86_64_LINUX_IOSD-ADVENTERPRISEK9-M), Version 15.5(1)S, RELEASE SOFTWARE (fc5)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2014 by Cisco Systems, Inc.
Compiled Thu 20-Nov-14 18:21 by mcpre


Cisco IOS-XE software, Copyright (c) 2005-2014 by cisco Systems, Inc.
All rights reserved.  Certain components of Cisco IOS-XE software are
licensed under the GNU General Public License ("GPL") Version 2.0.  The
software code licensed under GPL Version 2.0 is free software that comes
with ABSOLUTELY NO WARRANTY.  You can redistribute and/or modify such
GPL code under the terms of GPL Version 2.0.  For more details, see the
documentation or "License Notice" file accompanying the IOS-XE software,
or the applicable URL provided on the flyer accompanying the IOS-XE
software.


ROM: IOS-XE ROMMON

route-views uptime is 16 weeks, 2 days, 44 minutes
Uptime for this control processor is 16 weeks, 2 days, 45 minutes
System returned to ROM by reload at 17:59:24 UTC Mon Nov 24 2014
System image file is "bootflash:asr1000rp2-adventerprisek9.03.14.00.S.155-1.S-std.bin"
Last reload reason: Critical software exception, check bootflash:crashinfo_RP_00_00_20161130-213123-UTC



This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco ASR1004 (RP2) processor (revision RP2) with 9891715K/6147K bytes of memory.
Processor board ID FXS1739Q3LN
2 Gigabit Ethernet interfaces
1 Ten Gigabit Ethernet interface
32768K bytes of non-volatile configuration memory.
16777216K bytes of physical memory.
1873919K bytes of eUSB flash at bootflash:.
78085207K bytes of SATA hard disk at harddisk:.

Configuration register is 0x2102

route-views>


Consultar la configuració IP del dispositiu 


route-views>show ip interface brief
Interface              IP-Address      OK? Method Status                Protocol
Te0/0/0                128.223.51.103  YES NVRAM  up                    up      
GigabitEthernet0/1/0   unassigned      YES NVRAM  administratively down down    
GigabitEthernet0/1/1   unassigned      YES NVRAM  administratively down down    
GigabitEthernet0       10.223.51.103   YES NVRAM  up                    up


El resum de la informació del protocol BGP 

route-views>show ip bgp summary
BGP router identifier 128.223.51.103, local AS number 6447
BGP table version is 98298272, main routing table version 98298272
679255 network entries using 168455240 bytes of memory
25577124 path entries using 3069254880 bytes of memory
4119466/119342 BGP path/bestpath attribute entries using 1021627568 bytes of memory
3745928 BGP AS-PATH entries using 184064004 bytes of memory
2 BGP ATTR_SET entries using 80 bytes of memory
121460 BGP community entries using 12201316 bytes of memory
764 BGP extended community entries using 33196 bytes of memory
0 BGP route-map cache entries using 0 bytes of memory
0 BGP filter-list cache entries using 0 bytes of memory
BGP using 4455636204 total bytes of memory
BGP activity 6533221/5811488 prefixes, 466626549/438875496 paths, scan interval 60 secs

Neighbor        V           AS MsgRcvd MsgSent   TblVer  InQ OutQ Up/Down  State/PfxRcd
4.69.184.193    4         3356 86229777  132397 98298716    0    0 11w5d      626453
5.101.110.2     4       202018 22901198  163190 98298716    0    0 7w2d       629576
12.0.1.63       4         7018 1497618    7009 98298716    0    0 4d10h      627611
64.71.137.241   4         6939 26130964  128657 98298716    0    0 11w4d      648819
66.59.190.221   4         6539 6631176  131385 98298716    0    0 11w5d      632747
66.110.0.86     4         6453 11132145   79118 98298716    0    0 11w5d      626458
66.185.128.48   4         1668 7432141   92961 98298716    0    0 4w1d       624975
69.31.111.244   4         4436       0       0        1    0    0 never    Active
80.241.176.31   4        20771       0       0        1    0    0 2d15h    Active
89.149.178.10   4         3257 9922098   26503 98298716    0    0 11w5d      628070
93.104.209.174  4        58901 2812183   13916 98298716    0    0 1w1d       618931
94.142.247.3    4         8283 10901819   27872 98298716    0    0 3w2d       629201
95.85.0.2       4       200130 4354558   29175 98298716    0    0 1w2d       629661
103.247.3.45    4        58511 4632047    6599 98298716    0    0 4d03h      651740
103.255.249.22  4        58443       0       0        1    0    0 6w1d     Idle
104.192.216.1   4        46450  507551    8344 98298716    0    0 2d15h      630030
114.31.199.1    4         4826 2590920   19179 98298716    0    0 1w5d       651795
123.108.254.218 4         9902       0       0        1    0    0 3d16h    Idle
129.250.0.11    4         2914 15299042  230834 98298716    0    0 10w3d      628338
132.198.255.253 4         1351 10111720  128643 98298716    0    0 11w4d      651141
134.222.87.1    4          286 17222098   59493 98298716    0    0 5w2d       628286
137.39.3.55     4          701 7077966  131337 98298716    0    0 11w5d      627267
140.192.8.16    4        54728  870002   18657 98298716    0    0 5d22h      647383
144.228.241.130 4         1239 3452626   43428 98298716    0    0 6w3d       626634
154.11.11.113   4          852       0       0        1    0    0 never    Idle
154.11.98.225   4          852 16463115  128659 98298716    0    0 11w4d      629488
162.243.188.2   4       393406 12350931   92993 98298716    0    0 4w1d       628775
162.250.137.254 4         4901 13421993   81371 98298716    0    0 12w1d      629049
173.205.57.234  4        53364 17774604   79111 98298716    0    0 11w5d      628072
192.203.116.253 4        22388       0       0        1    0    0 never    Idle
192.241.164.4   4        62567 37114592  260296 98298716    0    0 11w5d      628782
193.0.0.56      4         3333  197788     602 98298716    0    0 04:33:28   638923
193.251.245.74  4         5511       0       0        1    0    0 never    Idle
194.85.40.15    4         3267 18634751  128621 98298716    0    0 11w4d      636315
195.66.232.239  4         5459 4865420  108781 98298716    0    0 16w2d      216694
195.208.112.161 4         3277 1031871    2141 98298716    0    0 4d11h      639667
198.32.252.33   4        20080   16734    2608 98298716    0    0 19:57:15    16936
202.93.8.242    4        24441  467570   27895 98298716    0    0 2w3d       143952
202.232.0.2     4         2497 15205954  108821 98298716    0    0 16w2d      635738
203.62.252.83   4         1221 7593941   54459 98298716    0    0 8w1d       629495
203.181.248.168 4         7660 15586654   36408 98298716    0    0 16w2d      544274
206.24.210.80   4         3561 16281812   79138 98298716    0    0 11w5d      628063
207.46.32.34    4         8075       0       0        1    0    0 never    Idle
207.172.6.1     4         6079 6631235   82252 98298716    0    0 7w2d       629128
207.172.6.20    4         6079 6447218   82237 98298716    0    0 7w2d       629137
208.51.134.254  4         3549 12314912  128608 98298716    0    0 11w4d      627758
208.74.64.40    4        19214 5823724   63131 98298716    0    0 5w4d       628502
209.124.176.223 4          101 1687585   11679 98298716    0    0 3d17h      630592
212.66.96.126   4        20912 3562351    5541 98298716    0    0 3d11h      633986
213.248.76.202  4         1403 8213001  117921 98298716    0    0 5w2d       629630
217.192.89.50   4         3303 12056918  109044 98298716    0    0 16w2d      629031
route-views>


Consulta les rutes o camins (path) disponibles per a l'adreça pública 


route-views>show ip bgp 92.57.80.125
BGP routing table entry for 92.57.64.0/19, version 27465737
Paths: (40 available, best #32, table default)
  Not advertised to any peer
  Refresh Epoch 1
  3333 1273 5511 12479, (aggregated by 12479 10.34.1.19)
    193.0.0.56 from 193.0.0.56 (193.0.0.56)
      Origin incomplete, localpref 100, valid, external
      Community: 1273:22000
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  46450 3356 5511 12479, (aggregated by 12479 10.34.1.19)
    104.192.216.1 from 104.192.216.1 (104.192.216.1)
      Origin IGP, localpref 100, valid, external
      Community: 3356:3 3356:86 3356:575 3356:666 3356:2010 3356:11396
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  20912 174 5511 12479, (aggregated by 12479 10.34.1.19)
    212.66.96.126 from 212.66.96.126 (212.66.96.126)
      Origin incomplete, localpref 100, valid, external
      Community: 174:21100 174:22008 20912:65002
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  101 101 3356 5511 12479, (aggregated by 12479 10.34.1.19)
    209.124.176.223 from 209.124.176.223 (209.124.176.223)
      Origin IGP, localpref 100, valid, external
      Community: 101:20100 101:20110 101:22100 3356:3 3356:22 3356:86 3356:575 3356:666 3356:2011
      Extended Community: RT:101:22100
      rx pathid: 0, tx pathid: 0
  Refresh Epoch 1
  58511 3257 5511 12479, (aggregated by 12479 10.34.1.19)
    103.247.3.45 from 103.247.3.45 (103.247.3.45)
      Origin incomplete, localpref 100, valid, external
      rx pathid: 0, tx pathid: 0
...

Cerca quina està marcada com a millor opció (best) 


route-views>show ip bgp 92.57.80.125
BGP routing table entry for 92.57.64.0/19, version 27465737
Paths: (40 available, best #32, table default)
[...]
  6453 5511 12479, (aggregated by 12479 10.34.1.19)
    66.110.0.86 from 66.110.0.86 (66.110.0.86)
      Origin IGP, localpref 100, valid, external, best
      rx pathid: 0, tx pathid: 0x0
[...] 

route-views>show ip route bgp | include 92.57.64.0
B        92.57.64.0/19 [20/0] via 66.110.0.86, 7w0d
Obtingut de «https://mediawiki.institutmarianao.cat/index.php?title=A6._BGP&oldid=2586»