Questions tagged [ecmp]

Question 1

Afaik OSPF ECMP is based, one of the two options, on the destination IP address. Hence if the OSPF advertised route is a /32 basically I wouldn't take advantage of the ECMP. Now the question: in the ...

Question 2

I used to think that eBGP does not support load balancing but in Cisco there is the maximum-path parameter that enable ECMP / Fortigate has ebgp-multipath as well so that is obviously not the case ...

Question 3

I haven't seen anything about ECMP in the RIPv2 RFC. Is it possible to use ECMP with RIP?

Question 4

In an ECMP path (consider 2 path ECMP - path1 and path2), if one of the path (say path-1) goes down, all the flows will be mapped the remaining one path (say path2). Now, after a while, if the path1 ...

Question 5

In many architectures there are load-balancing mechanisms such as ECMP routing or LAG between various interfaces. This load-balancing is usually per-flow, based on a hash of various criteria, such as ...

Question 6

This is a "why and how exactly does this work" question. The given problem is already solved. QUESTION: I'm interested to understand what "rotate" in ip load-sharing address source-...

Question 7

I maintain two cross-connected switches, R1 and R2, which both have a link to an external switch, R3. R1 and R2 both use eBGP to receive routes to various subnets behind R3. Additionally, R1 and R2 ...

Question 8

Assume we have a following topology. R1 represents Router1, R2 represents Router2, R3 represents Router3 and R4 represents Router4. Src represents the source Server. Dest represents the destination. ...

Question 9

Overview I am trying to setup BGP based ECMP to two end servers that sit on separate subnets/VLANs and advertise out the same IP address to a SRX firewall. The end nodes are linux boxes running BIRD ...

Question 10

Equal-cost multi-path (ECMP) is a routing strategy that gives several benefits such as load balancing (as far as I know it is mostly implemented in routers). Suppose there exists a set of switches, ...

Question 11

Background: we are planning to have a L3 leaf spine network with TOR(redundant mlag) and spine switch. Each TOR is on a specific subnet and run bgp with spine. Now, what is the recommendation to run ...

Question 12

Can someone provide me an example of how Equal-cost multi-path routing uses hashing to decided which packet goes to which? I apologize for that but all I found online are just a definition of ECMP.

Question 13

First, I'm adding this question and answering myself because this type of behavior was absolutely no where to be found, hopefully it will help someone. Problem: We use auto bandwidth to handle the ...

Question 14

Reading the MSDC design guide, it was indicated that OSPF is used for the routing and ECMP for supporting equal cost paths. Who does the actual routing, is it OSPF using ECMP or the other way arround? ...

Question 15

I have a network of routers with two clients at both ends, as shown in the Figure below. All the routers use OSPF routing protocol over IP, and the three routers inside the "MPLS backbone" subnetwork ...

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Questions tagged [ecmp]

OSPF ECMP on /32 - consequences on EVPN-BGP

eBGP load balancing - why is it not use

Can ECMP be used with RIP?

How does ECMP load balancing work after recovery from a failure?

How can you determine the result of a load-balancing hashing algorithm (such as ECMP/LAG) for troubleshooting?

NX-OS 9.3: ECMP polarization and "ip load-sharing ... rotate"

Use ECMP to distribute traffic between two paths, one learned by eBGP and one learned by iBGP on a Cisco NX-OS switch

Regarding ECMP hashing

Juniper SRX BGP based ECMP not working as expected

Using ECMP for switching in Layer 2

L3 leaf-spine architecture and DHCP ip assignment

Example of ECMP uses hashing technique

Why are my equal cost LSP's not load balancing equally when using auto-bandwidth?

How do ECMP and OSPF collaborate within Cisco's MSDC network?

load-balancing on congestion, OSPF over MPLS

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