#tshoot test

[ipnet]

642-832 TSHOOT Test Tips - Layer 3 BGP Issues

                                         BGP ISSUES

Issues Peering your neighbor router

3. Since TTL for EBGP is 1 (IBGP is 255) if you want peer to a router that is not one hop away, you will need to use the Multihop command

2. Access List blocking TCP 179 - sh access-list

3. Routers have to have ip reachability (Rip, EIGRP, Static Route....) if the router is not directly connect to be able to establish peering - sh ip route

BGP peers must agree on the following attribute

1. Peer Address

2. Unique RID (Router ID - loop interface)

3. ASN (autonomous system number)

Important command to know

1. show ip bgp neighbors

2. show ip route

3. show ip bgp summary

[ipnet]

642-832 TSHOOT Test Tips - Layer 3 EIGRP issues

LAYER 3 EIGRP Issues

Access list issues blocking protocol 88 – sh access-list

Misconfiguration of the network and neighbor statements – One side has a network statement and the other neighbor – sh ip route eigrp – sh run | section eigrp

Device in different subnet – sh ip int brief

Different ASN (Autonomous system Number) - sh ip eigrp interface

Authentication problem – sh run | section eigrp *tips even if you see that the password is the same, does not mean it is the same because one of the password can have a space on the password, but you won’t see it. If you see authentication problem on the debug (debug eigrp packets) you have to remove and add the password – really tricky right.

Different K values (metric weights)

Redistribution issues –  Redistribution into EIGRP does not have a default value – We need to add the default value or add the metrics. 

Example: redistribute rip metric 1 1 1 1 1

   Things to know about EIGRP

Type:  Distance Vector

Algorithm: Dual

AD (Admin Distance): 90/170(External)/5 (summary)

Standard: Cisco proprietary

Protocol: IP/88

Authentication: MD5

Multicast: 224.0.0.10

EIGRP is not as big as Layer 2 issues. Remember we can have tons of problems, but I'm trying to narrow the issues with the most common one.

[ipnet]

To be able to load this file to GNS3 on your computer you are going to need to edit the following on the toot.net file:

The working Directory

current - workindir = shoot_working

*you have to edit this line with your working directory name.

The Image Path

current - image = /Users/gns3/Documents/Cisco IOS/c1700-k9o3sy7-mz.124-12c.bin

*you have to edit this line with your Cisco IOS image path

Also you have to change the model and chase with your device model and chassis. 

I will be downloading the base config file in the following days. Thanks

Click Here to Download the .net file