Tuesday, December 21, 2010

Command : Passive Interface in RIP, EIGRP & OSPF

Passive-interface command is used in all routing protocols to disable sending updates out from a specific interface. However the command behavior varies from o­ne protocol to another.

In RIP: this command will disable sending multicast updates via a specific interface but will allow listening to incoming updates from other RIP speaking neighbors.
[Simply router can able to receive updates o­n that passive interface and use them in the routing table but it will never sends any update through that specific interface.]

In EIGRP: this command stops sending outgoing hello packets, hence the router can not form any neighbor relationship via the passive interface. [Simply it will never send & receive any routing updates to neighbors.]

In OSPF the passive-interface has a similar behavior to EIGRP. The command suppresses hello packets and hence neighbor relationships.

Note : Incase of any suggestion,pls let us know...

Saturday, June 12, 2010

IP Momentum VoIP Ports


IP Momentum VoIP uses the below ports for communicate the Voice/Account related to ISP/Account Providers,

TCP    -    80,8080,9090

UDP    -    5060, 5061, 6070, 6071, 17090 to 17100 , 9000 to 9006 , 10000 to 10006 , 20000 to 22000

http://netanalyst.blogspot.com/p/voip.html

Saturday, May 22, 2010

Router Servers & other BGP\Tools


http://www.traceroute.org/#Route%20Servers

Tuesday, May 4, 2010

Cisco ASA 5500 Configuration Register Values


Syntax:
******
configuration-register value

Examples:
*********
  • 0x01 - ASA default value
  • 0x41 - ASA ignore startup configuration on next reboot (used for password recovery)


http://netanalyst.blogspot.com/p/cisco-asa.html 

Performing Password Recovery for the ASA 5500 Series


http://netanalyst.blogspot.com/p/cisco-asa.html

http://www.cisco.com/en/US/docs/security/asa/asa70/configuration/guide/trouble.html#wp1049302

Cisco Routers Configuration registers Value


Cisco Routers Configuration registers Value
************************************
  • The configuration register is a 16 bit (2 Byte) value
  • The value range is from 0x0 to 0xFFFF.
  • 0x2102 is the factory-default configuration register value.
  • 0x2142 boots from flash without using NVRAM contents good for password recovery.
  • 0x2101 boots from boot prom image not flash, good for upgrading image on flash.
  • 0x2141 boots from boot prom and ignores NVRAM contents.
  • 0x141, which disables the Break key, ignores the NVRAM configuration, and
    boots the default system image from ROM.
 

http://netanalyst.blogspot.com/p/cisco-routers.html


http://www.cisco.com/en/US/products/hw/routers/ps133/products_tech_note09186a008022493f.shtml#config-reg-meaning

Friday, April 23, 2010

Cisco VPN Client


Latest Cisco VPN Client version is as mentioned below,

Windows 32-bit: vpnclient-win-msi-5.0.07.0290-k9.rar

Windows 64-bit: vpnclient-winx64-msi-5.0.07.0290-k9.rar

Tuesday, April 20, 2010

Split Tunnel - Cisco ASA



Split tunnel concept in Cisco ASA IPSec VPN, pls go through the Cisco ASA Page,



Saturday, April 17, 2010

Cisco PIX & ASA


Pls check the Cisco ASA Page in this blog for Cisco PIX and ASA differences,  
 
Cisco PIX:
********

Cisco ASA:
*********

Cisco devices Password Recovery procedure

Cisco devices Password Recovery procedure,
**************************************

Below link will helpful to know the Cisco devices such as Routers, Switches, Firewalls, VPN Concentrators and wireless devices.


Friday, April 16, 2010

Cisco Router/Switch Type 7 Password Cracker





To Crack the Cisco Type 7 Password Many ways available, below i mentioned only one way, for this many third party software tools & links available,

http://www.ifm.net.nz/cookbooks/passwordcracker.html (Direct Link)

http://www.winagents.com/en/products/cisco-password-recovery/ (Software Based)
 

Tuesday, April 13, 2010

IGRP and EIGRP Comparison

EIGRP Network Design Solutions: The Definitive Resource for EIGRP Design, Deployment, and OperationEIGRP for IP: Basic Operation and Configuration (The Addison-Wesley Networking Basics Series)Building Scalable Cisco Internetworks Volume 3 (Cisco Training and Certification, Student Guide Version 2.0)
Interior Gateway Routing Protocol
******************************
·         Cisco proprietary Protocol
·         Classful
·         Doesn’t support VLSM
·         Equal cost balancing by default
          - Use Variance command for unequal cost balancing
·         Broadcast updates to 255.255.255.255 every 90 secs
·         Uses Bellman-Dord Algorithm
·         It's only support for Cisco devices.

Enhanced Interior Gateway Routing Protocol
***************************************
·         Cisco proprietary Protocol 
·         Classless
·         Supports VLSM 
·         Equal cost balancing by default
          - Use Variance command for unequal cost balancing
·         Uses DUAL Algorithm
·         Multicasts its updates to 224.0.0.10
·         Sends updates upon adjacency and when the network topology changes
·         It's only support for Cisco devices.  



RIPv1 and RIPv2 Comparison


RIPv1 (Routing Information Protocol Ver.1)
**************************************
·         Classful
·         No VLSM Support
·         Doesn’t support routing update authentication
·         Update packets contains entire RIP routing table
·         Updates carry 25 routes maximum
·         Equal cost load balancing by default – 4 paths
·         Broadcasts its updates to 255.255.255.255 every 30 seconds

RIPv2 (Routing Information Protocol Ver.2)
**************************************
·         Classless
·         VLSM Support
·         Does support routing update authentication
·         Multicast its updates to 224.0.0.9

Tuesday, March 30, 2010

OSPF DR Election


OSPF DR Election:
***************
DR and BDR election is done via the Hello protocol. Hello packets are exchanged via IP multicast packets on each segment. The router with the highest OSPF priority on a segment will become the DR for that segment. The same process is repeated for the BDR. In case of a tie, the router with the highest RID will win. The default for the interface OSPF priority is one. Remember that the DR and BDR concepts are per multi-access segment. Setting the ospf priority on an interface is done using the following interface command:

ip ospf priority

A priority value of zero indicates an interface which is not to be elected as DR or BDR. The state of the interface with priority zero will be DROTHER.

OSPF Building the Adjacency & Troubleshooting Tips,


OSPF Building the Adjacency states:

  • Down
  • Attempt
  • Init
  • Two-Way Handshake
  • Exstart
  • Exchange
  • Loading
  • Full

Monday, March 15, 2010

Welcome to the Network Analyst Blog


Welcome to the Network Analyst Blog,

How to know the public IP Address/BGP AS/Domain registered in the world?

Below mentioned website will help you to find the above queries,

http://www.iana.org/

Root server IP:  12.0.1.28

Tech Tips