- Test - lists.nanog.org

Comcast Static IP Changed With New Modem?
by Justin Krejci 11 Feb '15

11 Feb '15

Has anyone run into the situation where their static IP address from Comcast (on the business class cable modem Internet service) was changed when the modem was replaced? We have a remote site that uses Comcast as a backup Internet connection and when we went to use it recently our VPN tunnel would not establish. After working with the Comcast support group we discovered Comcast changed our static IP address. I am working through trying to figure out the when and the why with Comcast still and suspect it was changed when the modem was replaced back in December. The modem was replaced by Comcast as our previous modem was apparently EOL'ed. We're now setting up additional monitoring to verify the accessibility of our remote site via the Comcast connection so we don't have any future uh-ohs when we need to use our backup connection and it too is not fully functional. TIA, -Justin

5 4

Any recommendations for FXS/FXO hardware with Cisco Unified CME
by Joel M Snyder 11 Feb '15

11 Feb '15

Folks: Since a lot of NSPs are also in the VoIP business, I was wondering if anyone has specific recommendations for low-density (2-8 ports) FXS/FXO hardware that they are using with Cisco PBX devices. (And I guess T1/E1 as well.) I know that typical IOS boxes can take modules/interfaces/whatever to handle FXS/FXO/T1/E1, but I'm trying to put some electrical distance between the Cisco PBX and the phone company to keep environmental problems (lightning, mostly) from blowing up the PBX. Cisco themselves seem to have cancelled almost all of their low-end hardware, leaving us with Sipura/Linksys. I have had good results with Audiocodes+Asterisk, but not in the Cisco PBX environment. Does anyone have boots-on-the-ground knowledge of good analog gateway choices that play very nicely with Cisco PBX? jms -- Joel M Snyder, 1404 East Lind Road, Tucson, AZ, 85719 Senior Partner, Opus One Phone: +1 520 324 0494 jms(a)Opus1.COM http://www.opus1.com/jms

2 2

a hack for dealing with lack of control/data plane congruence at ix with rs
by Randy Bush 11 Feb '15

11 Feb '15

https://datatracker.ietf.org/doc/draft-ymbk-idr-rs-bfd/

1 0

RE: Cumulus List
by Doug Marschke 11 Feb '15

11 Feb '15

I can help..contact me off list. Sent via the Samsung Galaxy Note® 4, an AT&T 4G LTE smartphone -------- Original message -------- From: Skeeve Stevens <skeeve+nanog(a)eintellegonetworks.com> Date: 02/10/2015 5:44 PM (GMT-08:00) To: nanog(a)nanog.org Subject: Cumulus List Hi all, I am looking to get a better understanding of some features of Cumulus Linux.... their pre-sales is a bit inundated, but I am wondering if there is a Cisco-NSP or something similar out there for Cumulus... Thanks :) ...Skeeve *Skeeve Stevens - Founder & Chief Network Architect* eintellego Networks Pty Ltd Email: skeeve(a)eintellegonetworks.com ; Web: eintellegonetworks.com Phone: 1300 239 038 ; Cell +61 (0)414 753 383 ; Skype: skeeve Facebook: eintellegonetworks <http://facebook.com/eintellegonetworks> ; Twitter: eintellego <https://twitter.com/eintellego> LinkedIn: /in/skeeve <http://linkedin.com/in/skeeve> ; Expert360: Profile <https://expert360.com/profile/d54a9> The Experts Who The Experts Call Juniper - Cisco - Cumulus Linux - Cloud - Consulting - IPv4 Brokering

1 0

Cumulus List
by Skeeve Stevens 11 Feb '15

11 Feb '15

Hi all, I am looking to get a better understanding of some features of Cumulus Linux.... their pre-sales is a bit inundated, but I am wondering if there is a Cisco-NSP or something similar out there for Cumulus... Thanks :) ...Skeeve *Skeeve Stevens - Founder & Chief Network Architect* eintellego Networks Pty Ltd Email: skeeve(a)eintellegonetworks.com ; Web: eintellegonetworks.com Phone: 1300 239 038 ; Cell +61 (0)414 753 383 ; Skype: skeeve Facebook: eintellegonetworks <http://facebook.com/eintellegonetworks> ; Twitter: eintellego <https://twitter.com/eintellego> LinkedIn: /in/skeeve <http://linkedin.com/in/skeeve> ; Expert360: Profile <https://expert360.com/profile/d54a9> The Experts Who The Experts Call Juniper - Cisco - Cumulus Linux - Cloud - Consulting - IPv4 Brokering

1 0

IPv6 allocation plan, security, and 6-to-4 conversion
by Eric Louie 10 Feb '15

10 Feb '15

I'm putting together my first IPv6 allocation plan. The general layout: /48 for customers universally and uniformly /38 for larger regions on an even (/37) boundary /39 for smaller regions on an even (/38) boundary A few /48's for "internal use" to allow us to monitor and maintain systems. For security sake, do I need (am I better off) to "reserve" a "management block" (/39, /40, /41 or something of that nature) that does NOT get advertised into BGP to my upstreams, and use that for my device management and monitoring address space? In other words, make a small "private" address space for management? What are folks doing around that? If I have to do 6-to-4 conversion, is there any way to do that with multiple diverse ISP connections, or am I "restricted" to using one entry/exit point? (If that's true, do I need to allocate a separate block of addresses that would be designated "6 to 4" so they'd always be routed out that one entry/exit point?)

15 35

Need recommendations for high-feature, high-density L3 Switch
by Cliff Bowles 10 Feb '15

10 Feb '15

We have some aging infrastructure and need to start budgeting next-gen. * The network has several small routers as individual edges to peers, WAN, SIP services. * It has a couple 6509s as Internet edge (full tables, 2 carriers, no transit, simple policies) * It has some Nexus 7K as an aggregation layer for all the server pods * It has some 6509s as a backbone to interconnect the aggregation layers and inter-site links. * We do run VRFs/MPLS across our backbone with L3, L2 and L1 services. Nothing super fancy, but it's a requirement. Two approaches: 1 - Look at ASR9010 (or something similar) to replace all of the above. Pros: It has the density, it has features, port buffers, seems to have good granular virtualization, seems to have a good reputation amongst heavy users. Cons: It is very expensive fully populated and there is some oversubscription on the higher-density cards. 2 - Look at one solution to consolidate all edge routers and a separate solution to consolidate backbone/aggregation. Pros: Less density required at the edge layers, so a cheaper solution is possible; Not requiring full BGP tables and port buffers at the backbone/agg layer widens the selection a LOT considering the number of vendors with high-feature/high-density L3 switches. Cons: Now we are looking at 4 boxes per data center rather than 2. So... Is there something in the same class as the ASR9000s that also have a good reputation? Will need at least 48 ports of 10G, 24x1Gb, limited oversubscription, good feature sets, not astronomically priced. If we can't find the perfect fit, we will just look at two separate solutions. Also... has anyone used a CSR1000v or Vyatta VM-based solution on something like a Pluribus? I know you can run them on any server, but there are vendors like Pluribus who integrate the server hardware with a full-feature physical switch. (Their E68 is the one we are considering) I'm assuming you aren't going to get anywhere near the features and performance of an ASR9010, but... can you get close? Thanks. CWB

5 5

UVerse question
by TR Shaw 10 Feb '15

10 Feb '15

Any suggestions on what to tell ATT to get IPv6 added to a current account and upgrade a 2wire router to 4wire with halfway decent performance and capability? Any and all help would be appreciated. Tom

6 5

mpls over microwave
by Scott Weeks 09 Feb '15

09 Feb '15

Anyone doing MPLS over microwave radios? Please share your experiences on list or off. scott

12 12

Has anyone imagined what could be the future HCI
by lobna gouda 09 Feb '15

09 Feb '15

Has anyone imagined this? away on increasing processing power or visual clearance of what we already have, what could be the next HCI?

3 4