Interested to Buy Any Domain ? << Click Here >> for more details...
what is bgp, and what its attributes (thanks to sahin he
sende me notes)
Please try to give answer it will help you in future. after
giving the answer most of them i am selected foro\ 2nd round
of interview
thanks
- 2 Answers
- 6228 Views
- IBM, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / jagadiesh
The Border Gateway Protocol (BGP) is the core routing
protocol of the Internet. It maintains a table of IP
networks or 'prefixes' which designate ...
he attributes that are commonly used in the Cisco
Implementation of BGP are as follows:
WELL-KNOWN, MANDATORY
AS-path: A list of the Autonomous Systems (AS) numbers that
a route passes through to reach the destination. As the
update passes through an AS the AS number is inserted at
the beginning of the list. The AS-path attribute has a
reverse-order list of AS passed through to get to the
destination.
Next-hop: The next-hop address that is used to reach the
destination.
Origin: Indicates how BGP learned a particular route. There
are three possible types -- IGP (route is internal to the
AS), EGP (learned via EBGP), or Incomplete (origin unknown
or learned in a different way).
WELL-KNOWN, DISCRETIONARY
Local Preference: Defines the preferred exit point from the
local AS for a specific route.
Atomic Aggregate: Set if a router advertises an aggregate
causes path attribute information to be lost.
OPTIONAL, TRANSITIVE
Aggregator: Specifies the router ID and AS of the router
that originated an aggregate prefix. Used in conjunction
with the atomic aggregate attribute.
Community: Used to group routes that share common
properties so that policies can be applied at the group
level.
OPTIONAL, NON-TRANSITIVE
Multi-exit-discriminator (MED): Indicates the preferred
path into an AS to external neighbors when multiple paths
exist.
A list of path attributes is contained in BGP update
messages. The attribute is variable length and consists of
three fields: Attribute type consisting of a 1-byte
attribute flags field and a 1-byte attribute code field,
Attribute length field that is 1 or 2 bytes, and a variable
length attribute value field. The attribute type codes used
by Cisco are: 1-origin, 2-AS-path, 3-Next-hop, 4-MED, 5-
Local preference, 6-Atomic aggregate, 7-aggregator, 8-
community, 9-originator-ID, and 10-cluster list.
This article discussed the BGP attributes with the intent
of preparing you for those confusing questions on the BSCN
or BSCI exams. Hopefully, there is no more confusion on the
various attributes that are used in the Cisco
implementation of BGP.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / akash
Just want to add BGP is application oriented protocol and
In IGP there must be a fullmesh topology used to establish the connection.
| Is This Answer Correct ? | 0 Yes | 0 No |
Tell me which protocol called rapid protocol?
Which of the following protocols are used for logical network addressing? A.) IP B.) TCP C.) ARP D.) ICMP E.) RARP F.) BootP
Explain the difference between tftp and ftp application layer protocols?
Suppose we have 4 switches runing in VTP mode. So when i create a VLAN in Server Switch this VLAN info reflect in all other switch. So question is - A) Suppose i m practicing this scenario in BOSON software, When a create a VLAN in server switch n ADD ports of switch to that VLAN, the same number of ports of client switch also belongs to dat VLAN. For example - In switch A (Server mode), i create a VLAN 7 name Hyderabad & port number 1, 2 & 3 put into this VLAN. Another Switch B (Client mode), its also showing that port number 1,2 & 3 belong the same VLAN. How cud it possible... As we know, VTP share only VLAN configuration information. Cud anyone explain it please....!!!! B)Same thing, when i m practicing in PACKET TRACER 5.0, its only showing that VLAN configuration information is shared. No port information is shared at all. I can manually configure individual switch port to respective VLAN as our wish. Cud anyone explain it please..!!!
What must be true for two Routers running IGRP to communicate their routes? A.) Same autonomous system number B.) Connected using Ethernet only C.) Use composite metric D)Configured for PPP
On which base distance vector choose best path?
Explain the difference between routable and non- routable protocols?
What is the default bandwidth of a serial connection? A.) 1200 baud B.) 1.544 Mbps (T1) C.) 10 Mbps D.) 96Kpbs
Inverse ARP serves what purpose? A.) Method for a local router to introduce itself to the remote end of the connection B.) Broadcast a routing table update C.) Identify MAC addresses if the IP address is known D.) Sent every 10 seconds used to verify the Frame Switch is still active
What is the cladding?
Select the physical interfaces that PPP can be configured on a Cisco router: A. Asynchronous serial B. HSSI C. ISDN D. Synchronous serial
hello i am new to this, i need to know how will i complete a basic scenario that ask the required number of networks that is 80 and the minimum number of host that is 3000 and the network address is 10.0.0.0 and i need to need how to compute to get the answer on what is the subnet mask.
CCNA 
