Configuration

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Site-to-Site IPSec VPN Cisco-Juniper

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Site-to-Site IPSec VPN Cisco-Juniper :   Scenario! Here in this LAB we have seven routers. R1, R2 and R3 routers represents Branch Router. R1 is working here as the HQ router and R2 and R3 as the Branch Router. R1 and R2 routers are from Juniper Networks and R3 router is from Cisco Inc. R4 router is working as an internet router. Other routers (R5 to R7) are working here as an end device. Task 1.       Configure Policy-based site-to-site VPN. 2.       Consider R4’s loopback address as internet route. 3.       R5 and R6 are configured as server so these servers should be reached from Branch Office too. 4.       Both Branch i.e. R2 and R3 should get internet from HQ i.e. R1 5.       In HQ router we have three zones named SERVER, INTERNET and INTRANET. SERVER Zones belongs to R5 and R6. INTERNET Zone belongs to R4 and INTRANET Zone belongs to the i...
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BGP for Enterprise Networks

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Around one year ago one of our customer ( A Leading “A class” Commercial Bank of Nepal) ask us to design, configure BGP on their network. I was the responsible person to handle this project. Resources. 1. They had two routers for redundancy. One router should work as a Primary and another router should work as a Secondary for fail-over.   2. They had /23 Subnets which is provided by IANA. For Confidentiality I’m going to use 193.168.0.0/23 Subnet in this blog instead of real Subnet they are currently using .   3. They were planning to connect with two ISP for BGP upstream.   4. Because of router incapability global routing table cannot be received from ISP so we had to plan accordingly.   Scenario. 1. I had to configure one Router as a Primary and another Router as a Secondary. For that I can use Multi Exit Discriminator Attribute of BGP but I had decided to use HSRP. 2. I had to Subnet to /23 network in two different /24 network because I ...
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Lets Play with BGP

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1. Configure IP Address as shown in the diagram 2. Configure Loopback Address as shown in the diagram 3. Configure AS number as shown in the diagram 4. Configure eBGP between AS 5. Configure OSPF in AS 1 6. Configure AS 1 in such a way so R1, R10 and R11 should be in the AS 64512 and R9, R12 and R13 should be in the AS 64534 Other AS should see only AS1 not Private AS Number when they receives routes Inside Sub-AS i.e. 64512 and 64534 full-mesh iBGP should be configured with the most scalable manner Hint (R1 and R9 should be Route-Reflector for the AS 64512 and 64534) Configure eBGP between R11 and R12 7. AS 2 have 192.168.120.0/24 network on his AS and Currently this network is propagating in BGP from AS 2. For some reason a part of that network (192.168.120.248/29) belongs to AS1 configure the needed router to achieve the goal with keeping this informaiton on mind. 8. By default AS1 is the shortest path to go to AS3 from AS2. Because of Bandwidth L...
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