December 2010 - Test - lists.nanog.org

(no subject)
by Atticus 13 Dec '10

13 Dec '10

Cc

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Re: Wake on LAN in the enterprise
by Berry Mobley 13 Dec '10

13 Dec '10

Thanks, everyone, for the replies - looks like I need to get my server team interested in knowing broadcast addresses for hosts, and making SMS send to those addresses. I do have the 'ip directed-broadcast <acl>' in place, but the servers are currently sending the magic packets to the all-1's address. Maybe I can get that changed. Berry

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That thing the USG keeps sending people to OECD meetings to try to obfuscate:
by Bill Woodcock 13 Dec '10

13 Dec '10

http://tech.slashdot.org/submission/1416250/68-of-US-broadband-connections-… -Bill

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Re: Wake on LAN in the enterprise
by Daniel Hagerty 13 Dec '10

13 Dec '10

Owen DeLong <owen(a)delong.com> writes: > WOL is unfortunately terribly deficient in that the spec. never = > envisioned the possibility > of a need for wake on WAN. > > Bottom line, it's a non-routeable layer 2 protocol. Your choices boil = > down to the > helper address nightmare you describe or proxy servers on every subnet. WoL works just fine over routed networks; the magic packet format doesn't preclude it. I send WoL over routed networks several times a day. The only gotcha is that you need some kind of arrangement for either directed broadcast, or hardcode ndp/arp entries. Perl code snippet below: my $wolhost = "wolhost.example.com"; my $wolhost_mac = "de:ad:be:ef:ca:fe"; my $mac = $wolhost_mac; $mac =~ s/[: ]//g; # Use socat to build a wakeonlan packet inside a udp6 datagram. my $packed_bcast = pack("H12", "f" x 12); my $packed_mac = pack("H12", $mac); my $dgram = $packed_bcast . ( $packed_mac x 16); # 9 is the discard port. For whatever reason, the wrong thing # happens when the port is referenced by name, despite having the # name in /etc/services. open(SOCAT, "|-", (qw(socat -u STDIN), "UDP6-DATAGRAM:$wolhost:9")) || die "popen: $!"; print SOCAT $dgram || die "print: $!"; close(SOCAT);

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Re: Wake on LAN in the enterprise
by Atticus 13 Dec '10

13 Dec '10

Appologies to all that got a quote email from me. My phone decided to pocket-reply to you.

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Re: Wake on LAN in the enterprise
by Jack Bates 13 Dec '10

13 Dec '10

On 12/13/2010 10:43 AM, Christopher.Marget(a)usc-bt.com wrote: > Jack Bates: >> I would suspect that proxy servers being the better deal, though >> my experience with Cisco is that you may have to use ASR type gear >> to get a nicer layout (similar to service providers) where you can >> backend everything to a radius server (I'm still waiting to test >> this myself, but IOS is really weak on DHCP support). > > I hope someone will please clarify the problem statement? > My problem is lack of WOL experience and associating dhcp-helper address with DHCP; ie, speaking without knowledge. I'm bad about that. :) > The only router/switch configuration required was to permit directed > broadcasts from the systems doing the waking. On by default, I > believe, but locked down in my environment. > IOS specific, I believe. Some have it on; some have it off. Jack

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Re: Wake on LAN in the enterprise
by Patrick Giagnocavo 13 Dec '10

13 Dec '10

On 12/13/2010 11:08 AM, Berry Mobley wrote: > Hello... > > I'm trying to get a handle on implementation of wake-on-lan in an > enterprise environment. Cisco gear, lots of subnets. I've made it work > with directed broadcasts, but I'd really rather not have 40 or 50 'ip > helper-address x.x.x.bcastaddr' statements on the vlans with the SMS > servers. > Assuming you are talking servers and not desktops, you will probably end up doing this with IPMI, which most servers have on-motherboard these days. Cordially Patrick

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Internap FCP
by Mark Wall 13 Dec '10

13 Dec '10

Greetings Nanog, Looking for some off-list reviews/insight on the FCP, We are looking into the device for purchase over the next few months, We are in the 10G range of products. Thank you

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Wake on LAN in the enterprise
by Berry Mobley 13 Dec '10

13 Dec '10

Hello... I'm trying to get a handle on implementation of wake-on-lan in an enterprise environment. Cisco gear, lots of subnets. I've made it work with directed broadcasts, but I'd really rather not have 40 or 50 'ip helper-address x.x.x.bcastaddr' statements on the vlans with the SMS servers. Are there any enterprises that are doing this for large (100+) numbers of subnets? I can't find a single example anywhere with more than 2 networks. I've searched the Cisco-NSP archives as well with no luck, but maybe I didn't go back far enough. Thanks for any help you can provide. Berry Mobley

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Wholesale DSL implementation in Canada
by James Smith 13 Dec '10

13 Dec '10

We're looking at implementing a DSL private network in various provinces in Canada. There seems to be two main ways to do this: build the network yourself by creating relationships with the local DSL providers (Bell, Telus, MTS, etc) ; or build the network using a third-party that already has a DSL infrastructure in place. The third-party DSL infrastructure is a sure thing, since they've been doing it for a while. However, we're looking at a large number of locations so the cost of implementing the DSL internally seems to be more compelling. Not having implemented a DSL infrastructure before, I'm wondering if anyone on NANOG has any advice on this? What technical or political issues might we run into? What is the best choice of hardware? (Juniper or Cisco)? Feel free to contact me off-list if you'd prefer. James

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