Questions tagged [route-summarization]
For questions about route summarization, a method for collapsing multiple routes into a single route which covers all the collapsed routes.
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Route summarization first IP address in block [duplicate]
I am not understanding how to determine the first network address or "first IP address of block" per Cisco Press documentation when summarizing routes/subnets. I am clear on how to get the ...
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Conflicting opinions for route aggregation [duplicate]
I am a student and I came accross this question:
An ABR in OSPF has in its range networks 10.0.8.9/24 to 10.0.21.0/24. how can it summarise the networks? not necessarily in one prefix.
What we ve ...
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Doesn't OSPF Have Auto Summarization?
I asked AI if there is a command in OSPF for auto summarization like RIP and EIGRP. Here is the answer:
"No, OSPF does not have a command like RIP and EIGRP that enables or
disables automatic ...
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Summarization on received Routes - BGP
We need to do Summarization on received Routes (as we are receiving 20K+ routes )to reduce load, saving memory, bandwidth, and CPU Cycle.
Please suggest some quick and accurate methods to do. I m ...
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What's the point of aggregate routes when the default preference is reject?
studying for my JNCIS-SP and finally digging into the minutiae. I'm trying to grasp the default behavior of aggregate/summary routes. Why are these a reject? Maybe I'm just using them wrong, but here'...
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BGP | Advertise a summary prefix out to customer location
I don't know what I should be using for this or how I should go about it.
In my lab where I am testing out the BGP configs that I've learned I want my ISP topology to have a summary prefix for the ...
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Cisco numeric EIGRP routing IP summarizing and routing
I have 2 routers connected via Serial 0/0/0 both running EIGRP with an ASN of 65000, and i want to advertise and summarize the interfaces, being just my loopbacks, and set the loopbacks as passive. ...
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EIGRP manual summarization prevent dual query
In EIGRP, manual summarization will prevent/ limit dual query. Is it true ?
How can we limit the dual query by introducing manual summary ?
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Multicast summarization
I was wondering, does it make any sense to summarize(supernet) multicast IPv4 addresses ? Can anyone please explain why yes, or no ?
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OSPF LSA type 3
This is what I know about LSA types from what I've learnt.
LSA type 1 is circulated inside an area and doesn't get to other areas.
LSA type 3 is sent from one area(From backbone to non-backbone and ...
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Why I Can't Summarize (aggregate) These Subnets in BGP router?
In a BGP routing context, giving these networks address:
192.168.0.0 /28
192.168.0.32 /28
For me, the summary address will be :
192.168.0.0 /26
But someone tells me that this is impossible because ...
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Difference in VLSM and FLSM in Rute Summarisation
Is there any specific advantage that VLSM or FLSM has over the other when it comes to route summarization? I was of the opinion that neither had an advantage over the other when it came to route ...
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Summary address any technique? [duplicate]
I was answering some Summary Address questions,
and one problem is this.
192.168.1.0 through 192.168.120.0.
do I really need to one by one 1 to 120 convert them to binary and to find where is the ...
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Why do summary routes get a low Administrative Distance?
Why do summary routes get a lower AD than other routing protocols? For example: The AD of EIGRP is 90, whereas the AD of a summary route is 5.
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Summarize subnet from 4 ip addresses
I am trying to figure out how to summarize the subnet for ip route. I am following this information here... http://www.pearsonitcertification.com/articles/article.aspx?p=2169746&seqNum=7
It ...
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