Questions tagged [routing]
For questions about routing, the process of selecting to which network path traffic is sent. Consider using a more specific tag if your question is about a routing protocol like BGP or OSPF.
2,236 questions
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FRR BGP peering on ipv6 link-local address
I have following setup in my lab. Host1/2 running ubuntu with FRR daemon for BGP. R1 is my cisco nexus switch. I want to route traffic between host1 to host2.
[host1]------ibgp----[R1]------ibgp----[...
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how does anycast network deployment work?
as far as i understand, anycast network i.e a /24 block is announced by a BGP with the same ASN from multiple regions. anycast networks such as 1.1.1.1 and 1.0.0.1 are largely used for DNS services or ...
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Counting to infinity in distance vector routing problem
Slides are taken from: https://cseweb.ucsd.edu/classes/sp15/cse123-a/lectures/123sp15-lec15.pdf
When converged and just after B-C link breaks(and when B knows that B-C does not exist anymore), the ...
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If the router is a Layer 3 device, does it even support Layer 2 forwarding (like a switch does)?
Nowadays we have multilayer switch and pure layer 3 device.
Do "pure" layer 3 device like a router use layer 2 protocol ?
Do they require layer 2 header to operate ?
If so, what are the ...
- 165
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Why do we still need NAT pool network mask when we already have starting IP and ending IP?
When configuring source NAT in cisco device
for the command that create nat pool
ip nat pool MYPOOL 203.0.113.10 203.0.113.20 netmask 255.255.255.0
Why do we still need NAT pool network mask when we ...
- 165
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Dual ISP with default route setup
This is how my topo will look end of the day.
eBGP peer between Edge <---> ISP
eBGP peer between Edge <---> Border-Leaf (I am using 65355 to peer eBGP with Edge )
Inside EVPN/VXLAN ...
- 4,461
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Redundant router-switch connection
I have the following network:
Gateway1 is a dedicated server with Juniper vSRX VM, Switch1 is Juniper QFX5xxx. There are multiple VLANs set up on the servers, so interface mode on the switch is set ...
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how to convert two routed interfaces between two pair 9k and pair 7k to vPC
We have pairs of N7K and N9k connecting via eigrp (full mesh), each one of the pair connected to two mpls routers, each pair have routing table, I am looking to replace the routed interfaces between ...
- 99
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Correct idea for an IPsec gateway
The purpose of this question is to improve my ability to technically apply the idea of routing specific traffic through an IPsec tunnel before reaching the Internet.
So far the best that I can ...
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BGP between peers that are 1 hop away?
I was wondering the need for a static route in the example below where its from AS65100 directly to AS65200 - 1 hop away. A BGP is established, so would there be a need/requirement for a Static Route ...
- 115
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Server redirecting packet via gateway in local LAN
I have Cisco Nexus tor switch connected with multiple servers on 25G nic. When I am pinging from server1 to server2 I am seeing higher latency in ping. After tcpdump found server replying ping reply ...
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2 Firepower 1120 Firewalls connected to a layer-2 switch
I am working 2 cisco firepower 1120 firewalls, which are connected to a 5-port layer-2 switch through their "outside"(Ethernet1/1) interfaces, each with an IP address of the form 192.168.1.x ...
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Why doesn't server response reach client in different subnet despite overlapping IP ranges?
I have the following network setup:
Client: 192.168.0.10/24
Server: 192.168.1.10/16
Router:
Interface 1: 192.168.0.254/24
Interface 2: 192.168.1.254/24
The router knows about subnets 192....
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How can routing protocols such as OSPF and RIP use the network layer
I am currently reading the the network layer chapter in Kurose & Ross Computer Networking: a top down approach. I understand that one of the responsibilities (services) of the network layer is to ...
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OSPF Adjacency Issue Between a Physical and a Virtual Layer 3 Switch
I'm encountering a puzzling issue with OSPF adjacencies in a mixed network environment and would greatly appreciate any insights or suggestions.
Network Setup:
Devices Involved:
A Cisco 2900 router.
...
