Internet Edge Redesign Networking |
- Internet Edge Redesign
- Redistribution vs Default Route
- Aruba Instant AP Advisory (v8.5)
- Layer 2 circuit between two local interfaces
- IP Prefix List Question
- Is it possible to combine Dante, HiQnet, Art-Net, and Video over IP with a Multilayer Switch?
- TFTP fails when restoring Cisco config
- Nexus 9000v VXLAN EVPN Multi-Site - Duplicate + Looped Packets
| Posted: 18 Aug 2019 04:48 AM PDT I have been given a rare opportunity to basically start from scratch with our BGP peering configuration to our Internet providers. Don't downgoat yet, this is not a "how do I?" post. I just want your thoughts. If you are a service provider, I'd like to have a candid perspective. What do your customers do that you absolutely hate? What do your "model" customers do that most do not? You see where I'm going with this. Whether or not you are an ISP, what are some best practices? While BCP 194 is full of great advice, it is not the be-all, end-all, and is generally SP-oriented. Our setup: We peer with two ISPs from both of our centralized data centers. That is, ISP1 terminates on DC1-Edge1 and DC2-Edge1, and ISP2 terminates on DC1-Edge2 and DC2-Edge2. Our circuits into the secondary DC are low bandwidth / burstable; they are low-cost DR connections unless we mess up and use them in non-DR situations. ASN: We have one ARIN-assigned ASN. If I need to push for a second one, now is the time. IPv4: We actually have an ARIN-assigned Class B. It rarely sees the light of day on the Internet, but our firewalls use addresses from the upper-most /21 for NAT. In particular, DC1 will use addresses from anywhere in the 252.0 - 255.255 range, and DC2 will use addresses from the 248.0 - 251.255 range. Our DMZ and most other public-facing services use address space from a /21 allocated from ISP1. Not really sure why we did that, but it's deeply embedded at this point. We do announce that /21 to both providers. The current plan is to announce the aggregate /16 and /21 from both data centers, to both ISPs, with 3x prepend out of DC2. Out of DC2, I was also going to announce the longer 248.0/22 with no prepending. IPv6: We have an ARIN-assigned /36, but we're not as cool as you because we don't use ours in any real capacity at this time. I was going to simply announce the /36 from both DCs, with 3x prepending out of DC2. Thoughts? Either on the design or in general? [link] [comments]  |
| Redistribution vs Default Route Posted: 18 Aug 2019 11:06 AM PDT Trying to understand a network configuration my coworker made. We have a pretty beefy router capable of holding the entire BGP table (its not summarized, dont ask me why) from our internet provider. We are currently redistributing all of it into OSPF. I dont understand the point of doing that , and I am sorry if I am being stupid here, when you can just offload all of that CPU utilization with a default route from our internal non edge/core routers and send all requests to the core edge. Do I have flawed logic here? [link] [comments]  |
| Aruba Instant AP Advisory (v8.5) Posted: 18 Aug 2019 06:28 AM PDT Got this overnight at work. Who in their right mind thought it would be a good idea to ship a version update that shifts the default interface off the first one? I get one version being an oops, too, but 3? Holy cow. Hopefully none of you have made the jump yet. I will be holding our ten 375s off for a few months but that's only because we open our gates in 4 days for our big event of the year.
[link] [comments]  |
| Layer 2 circuit between two local interfaces Posted: 17 Aug 2019 11:07 PM PDT Searching for the best way to configure a circuit between two interfaces same chassis different cards No VLAN's - Basic example all traffic entering Card 1 P1 is switched to Card 2 P1 Reason: for testing near end will be Ethernet Tester and far end hard loop. What is the technical term and basic configuration required. Layer 2 circuit, Epipe, P2P? [link] [comments]  |
| Posted: 18 Aug 2019 08:29 AM PDT Hi all, Quick question about prefix lists. I'm peering with a partner and injecting a route map IN (BGP), which restricts the prefixes advertised to us, but a quick question, because I'm trying to save the amount of config to be written up. The partner is advertising a lot of /23 and /24s. Example: Let's say the partner is advertising 192.168.206.0/23 and 192.168.207.0/24. To save 2 entries for both prefixes, I thought of writing up a config in this manner: My understand is that this will allow both the 192.168.206.0/23 and 192.168.207.0/24. Does this look correct? Thanks [link] [comments]  |
| Is it possible to combine Dante, HiQnet, Art-Net, and Video over IP with a Multilayer Switch? Posted: 17 Aug 2019 06:23 PM PDT The concept would be applied to temporary AV event setups. Essentially I would like to try to combine all AV signals (audio, lighting, video, and component control) with their respective protocols over fiber so that a single line can be run up to an MLS on the truss hanging from the ceiling and then split off to projectors, speakers, and lights using their various receivers/adapters. I'm familiar with the networking involved within each discipline but I've never seen anyone attempt to combine it all under one massive managed network, and as a result I can't find a definitive answer as to whether or not it can technically be done on this scale. Most of my research has brought me to sites talking about permanent AV installations for offices and campuses, however in my opinion this is a whole different kind of AV. I'm hoping that this kind of query fits in with this sub, if not then I'll remove it and post it elsewhere. Any advice that people can give would be greatly appreciated! [link] [comments]  |
| TFTP fails when restoring Cisco config Posted: 18 Aug 2019 07:53 AM PDT I'm trying to restore running config from a backup file using tftpd directly from the web GUI on an SG300. Tftpd on the server where the backup is saved shows activity and progress from the switch connection when I initiate the restore. However, it always fails as it reaches the end of the transfer. It's as if it times out the session. Anything else I can try? [link] [comments]  |
| Nexus 9000v VXLAN EVPN Multi-Site - Duplicate + Looped Packets Posted: 17 Aug 2019 05:49 PM PDT Hi All Has anyone labbed VXLAN EVPN multi-site with on the Nexus 9000v? I have a test topology in EVE-NG, with two sites. One site has two BGWs (also acting as a spine), the other has one. Each site has a VTEP leaf. When sending unicast layer 2 traffic from the single BGW site to the multi-BGW site, in a capture on the DCI interface of the source BGW I see... 1 packet to the VIP All the packets make it down to the host on the multi-BGW site. The l2fwder output from the single BGW site's BGW indicates that the unicast traffic should be tunnelled to the VIP of the other, multi-BGW site, but for some reason this is ignored and it also seems to be forwarded as BUM traffic too. Does anyone else get the same duplicate traffic? I just want to check if this is a limitation of the l2fwder module of the VM (like maybe it's not storing the learned MACs correctly, causing the BUM treatment and split horizon being ignored), rather than an error in my config. [link] [comments]  |
| You are subscribed to email updates from Enterprise Networking news, blogs and discussion.. To stop receiving these emails, you may unsubscribe now. | Email delivery powered by Google |
| Google, 1600 Amphitheatre Parkway, Mountain View, CA 94043, United States | |
No comments:
Post a Comment