help me understand MPLS LSP bandwidth Networking |
- help me understand MPLS LSP bandwidth
- Jitter network simulation tools
- How to control UDP broadcast forwarding with Cisco ISR 4431
- Mm fiber to dual rj45 media converter?
- Intermittent packet loss only to certain IPs over point-to-point
- Alternatives to Cisco 5k with 2k fex in vPC
- Useful switchers for learning and practice networking
- Dlink DVX-2002F Dial Plan
- Cisco Firepower clear bad Nat from cli
- Multilink bundle with chap?
- Machine learning on IP addresses - group by ASN? Other?
- Extended support with ParkPlace
| help me understand MPLS LSP bandwidth Posted: 29 Feb 2020 12:46 PM PST One thing ive never understood is MPLS LSP auto/bandwidth. I have googled this but without much success. What happens when the traffic being sent is over the allocated LSP bandwidth? I understand that auto-bandwidth increases the bandwidth for LSP with some preconfigured variables, but i do not know the importance of the bandwidth value itself [link] [comments]  |
| Jitter network simulation tools Posted: 28 Feb 2020 10:16 PM PST Hi, I am finding a jitter network simulation tool available on Windows or Mac. Clumsy is a great tool and it is very easy to use, but it does not support simulate ping jitter. WANem seems able to simulate ping jitter, but it is Linux only and a bit tricky to set up. Is there any jitter simulation tool available on Windows or Mac? Thanks a lot. [link] [comments]  |
| How to control UDP broadcast forwarding with Cisco ISR 4431 Posted: 29 Feb 2020 02:58 PM PST I have the following UDP broadcast forwarding success and issue... From the inside private network src: 10.1.1.99 dest 10.1.1.255 port 6001 broadcast UDP with ip-helper in vlan 100 of 10.0.1.210 & ip forward 6001, results in outside private network unicast udp output from G0/0/1 src: 10.0.1.33 dest: 10.0.1.99 port 6001 (this is intended). I also have src: 10.194.234.1 dest 10.0.1.210 port 5207 packets on this network. These packets are not wanted on this outside network. From the inside private network src:10.1.1.87 dest 10.1.1.255 port 5207 broadcast UDP with ip-helper in vlan100 of 10.194.234.99 & ip forward of 5207, results in outside private network unicast udp output from G0/0/1 src: 10.194.134.1 dest of 10.194.234.99 port 5207 (works as intended). I also have src: 10.0.1.99 dest 10.194.234.99 port 6001 packets on this network. These packets are not wanted on this outside network. I'm looking for a way to selectively filter via access-list or some method the unwanted packets from each outside private network. I have attempted several iterations of extended access-list on the VLAN source, but it is unclear to me since it is a multillayer switch if this is the appropriate location for the access-list. I have also attempted standard access-lists on the G0/0/0 and G0/0/1 ports, as well. This had no change either. I'm looking for any and all suggestions. They are most welcome and appreciated! [link] [comments]  |
| Mm fiber to dual rj45 media converter? Posted: 29 Feb 2020 09:49 AM PST Does such a thing exist? I me t with a contractor and they told me they needed 2 copper connections. We can extend the run via fiber with media converters on both end. I get all that, but I only have 1 fiber pair available. He mentioned stick a dual out media converter on it and done. I have yet to find one. Anyone know what he's talking about? [link] [comments]  |
| Intermittent packet loss only to certain IPs over point-to-point Posted: 29 Feb 2020 01:43 PM PST I have been trying to figure this one out for almost a week and it's one of the most confusing things I've ever seen. We have Comcast ENS connecting 5 sites to one another, and starting early this week, all of the sudden we are seeing severe packet loss (20-50%+ depending on destination/time) to and from certain hosts at our main site. The Comcast router is an ISR4431, and our core switch is a Catalyst 6500. The output from a remote Cisco device to these hosts will show pretty consistent, intervaled loss (e.g. !!!!!.!!!!!.!!!!!.!!!!!) where only every so many ICMP packets are dropped, anywhere between every other and every 10-15 packets. The frequency of dropped packets also generally increases with ICMP packet size, so it seems to either be dropping after so many bytes or so many milliseconds. The strangest thing is that the packet loss is only to half or less hosts at our main site, and basically 0 loss to other hosts. The ones that exhibit packet loss seem to be consistent across sources at the other remote sites, and there is no loss between one remote site and another, so we feel that we have isolated the problem to something at our main site. Comcast did L2 tests between their switches and found no drops, errors, etc. including by the BUM filter. We unfortunately do not have direct access to the ISR4431 as it is managed by a third party, but I did get them to send us a show tech-support output. I found some posts about a Catalyst switch having stuck-open TCP sessions where they were seeing the same kind of intermittent packet loss only to certain hosts, but doing a "show tcp brief" on the 4431 and our 6500 only showed a couple open sessions each. We are kind of at a loss here, and aside from rebooting the ISR (which we can do, but have to schedule an outage wndow) don't know what could be causing this. Routing? OSPF routes are /24 and different hosts in the same subnet/VLAN are showing no packet loss or quite a lot, so I don't think it's that. Some sort of ARP issue? Any assistance/ideas would be awesome. [link] [comments]  |
| Alternatives to Cisco 5k with 2k fex in vPC Posted: 29 Feb 2020 04:18 AM PST Hello all I wanted to ask if there are other vendor technologies similar to the 5k and 2k Fabric extender switching which can be considered as an alternative. Effectively wanted to keep the costs low and with the 5548UP no longer in sale. Perhaps it might be time to see if other vendors are doing this? Peferrably would like to use the vPC functionality to dual home the fex to the 5k. Thanks for any advice. EDIT: Cisco Alternative to 5k/9k to 2k fex technology by another vendor like Arista/Dell/Cumulus haven't come across any but still researching. [link] [comments]  |
| Useful switchers for learning and practice networking Posted: 29 Feb 2020 03:27 PM PST What would be an economic "good" switcher to learn? I'm thinking buying the NETGEAR 8-Port Gigabit Ethernet Smart Managed Pro Switch (GS308T) from Amazon, but the reviews have me confused. Any recomendations? [link] [comments]  |
| Posted: 29 Feb 2020 06:15 AM PST Hello Everyone I need to setup a new Dlink PBX DVX-2002F specially outbound route. Currently I successfully receive calls and register IP-Phones successfully, but I can't create a working dial plan. It will be great to find help here [link] [comments]  |
| Cisco Firepower clear bad Nat from cli Posted: 28 Feb 2020 08:15 PM PST Hey all, Just set up a Cisco 5506-x running FTD 6.2.3 Basically I was playing around with some NAT policy's and ended up borking the management interface 😑. Does anyone know how I can clear the NAT policy via the console port from cli? I can see the bad policy if I run show Nat detail however I cannot find a way to remove a policy. Any help is appreciated! [link] [comments]  |
| Posted: 28 Feb 2020 06:23 PM PST If I wanted to use CHAP on serial lines in a multilink bundle would I configure the CHAP on the lines individually or the multilink interface? [link] [comments]  |
| Machine learning on IP addresses - group by ASN? Other? Posted: 29 Feb 2020 06:09 AM PST I'm analysing my company's Internet log data and I'd like to make use of IP data in my model. I'd like to use some kind of grouping of IPs as a feature, both because I don't know what the lease timeouts are of any given address, and also because I expect people on a similar block (e.g. spectrum home internet, some company's IP block) will behave similarly to one another. The problem I'm running in to is that there doesn't seem to be any one canonical entity. Subnets (like a /24) aren't guaranteed to all be assigned to the same source. ASNs as found in BGP broadcasts (e.g. at https://iptoasn.com/) seem like a good option but some ranges aren't broadcasted, for example T-mobile has 26.0.0.0/8 but it doesn't seem to belong to an AS. It does appear as a netrange in ARIN (https://whois.arin.net/rest/net/NET-26-0-0-0-1/) but I don't know of a good way to do a bulk lookup of thousands or millions of IPs, or if a netrange necessarily belongs to just one organization. I'm obviously not a network engineer and I'm missing a lot of information - what would be a good way to roll up IPs into similar groups? [link] [comments]  |
| Extended support with ParkPlace Posted: 29 Feb 2020 03:56 AM PST I dont know if you guys are familiar with them but we have hardware covered by ParkPlace for Dell servers and Cisco switches. For Dell hardware we usually have Dell Pro Support but because of budget restrictions we keep some servers sometimes up to 8/9 years so since Dell wont support after 5 years, ParkPlace comes into play. So far we are happy with the service, we had a couple of hardware failures, they were able to find replacement parts, send an engineer to location and voila.... Now we have some Cisco ASAs and Cisco 1941 that are going out of support soon and I am wondering if there is any point covering these with ParkPlace since they require a licensed security module, would an ASA or 1941 need to be replaced we wouldnt be able to use it without the securiy license activation. The reason I am thinking about extended support for this hadrware is because we will refresh the equipment in around 10 offices but there will be a period (couple of months) where the ASA/1941 routers will be running annd will be running without any support. [link] [comments]  |
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