Some flavors of Cisco will drop inbound ICMP if they feel busy. When this happens, they do it silently and do not count errors, etc. I don't know if the NPE G2 is subject to this proclivity or not and I don't know how busy your router feels when you are doing this, but, the particularly regular pattern to the packet loss leads me to believe it is likely a CPU spike in the Cisco for some scheduled periodic task causing it to fail to process the inbound ICMP Echo Reply. (Remember, ICMP to the router is punted to the slow-path CPU) Owen On Oct 3, 2011, at 7:47 AM, Jeremy Lumby wrote:

This weekend I did some equipment upgrades, and while my BGP session re-established without a problem, I decided to ping the route servers to test connectivity. I found that both route servers exhibited about a 0.5% loss. I checked my interface counters, and I am not getting any errors, as well as I tried pinging a few other MICE members' routers and did not experience any loss. I am wondering if there is a speed/duplex mismatch between the route servers and the switch, or if there might be something running on the route servers that is intentionally dropping packets as some form of DoS protection. The following ping was performed from my Cisco 7206VXR that is directly connected to MICE via the gig port that is built into the G2 processor.

511Edge01#ping 69.147.218.1 repeat 1000

Type escape sequence to abort. Sending 1000, 100-byte ICMP Echos to 69.147.218.1, timeout is 2 seconds: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!. Success rate is 99 percent (995/1000), round-trip min/avg/max = 1/1/4 ms

Jeremy Lumby Minnesota VoIP 9217 17th Ave S Suite 216 Bloomington, MN 55425 Main: 612-355-7740 Direct: 612-392-6814 E-Fax: 952-873-7425 jlumby@mnvoip.com

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511Edge01#ping 69.147.218.1 repeat 1000

From the Juniper side, they look ok:

jhanke@MICE-SW1> show interfaces ge-0/0/1 media Physical interface: ge-0/0/1, Enabled, Physical link is Up Interface index: 131, SNMP ifIndex: 506 Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online Device flags : Present Running Interface flags: SNMP-Traps Internal: 0x0 Link flags : None CoS queues : 8 supported, 8 maximum usable queues Current address: 00:19:e2:54:f3:41, Hardware address: 00:19:e2:54:f3:41 Last flapped : 2011-08-11 07:05:18 CDT (7w4d 03:01 ago) Input rate : 0 bps (0 pps) Output rate : 8936 bps (12 pps) Active alarms : None Active defects : None MAC statistics: Input bytes: 180903945, Input packets: 1389879, Output bytes: 5461565301, Output packets: 57882316 Autonegotiation information: Negotiation status: Complete Link partner: Link mode: Full-duplex, Flow control: Symmetric/Asymmetric, Remote fault: OK, Link partner Speed: 1000 Mbps Local resolution: Flow control: Symmetric, Remote fault: Link OK {master:0} jhanke@MICE-SW1> show interfaces ge-0/0/2 media Physical interface: ge-0/0/2, Enabled, Physical link is Up Interface index: 132, SNMP ifIndex: 508 Link-level type: Ethernet, MTU: 1514, Speed: Auto, Duplex: Auto, BPDU Error: None, MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled, Flow control: Enabled, Auto-negotiation: Enabled, Remote fault: Online Device flags : Present Running Interface flags: SNMP-Traps Internal: 0x0 Link flags : None CoS queues : 8 supported, 8 maximum usable queues Current address: 00:19:e2:54:f3:42, Hardware address: 00:19:e2:54:f3:42 Last flapped : 2011-08-11 07:15:43 CDT (7w4d 02:51 ago) Input rate : 0 bps (0 pps) Output rate : 13984 bps (20 pps) Active alarms : None Active defects : None MAC statistics: Input bytes: 149428264, Input packets: 1093514, Output bytes: 5434250653, Output packets: 57716385 Autonegotiation information: Negotiation status: Complete Link partner: Link mode: Full-duplex, Flow control: Symmetric/Asymmetric, Remote fault: OK, Link partner Speed: 1000 Mbps Local resolution: Flow control: Symmetric, Remote fault: Link OK {master:0} jhanke@MICE-SW1> Jay Hanke CTO, CCIE #19093 Mankato Networks LLC 619 S Front St Mankato, MN 56001-3838 Google 530-618-2398 jayhanke@mankatonetworks.net http://www.mankatonetworks.com ######################################################################## To unsubscribe from the MICE-DISCUSS list, click the following link: http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1

I agree, everything looks good on the interfaces. There is a good chance I am just being too picky. -----Original Message----- From: MICE Discuss [mailto:MICE-DISCUSS@LISTS.IPHOUSE.NET] On Behalf Of Anthony Anderberg Sent: Monday, October 03, 2011 10:16 AM To: MICE-DISCUSS@LISTS.IPHOUSE.NET Subject: Re: [MICE-DISCUSS] Speed or duplex mismatch? I don't see anything obvious on the main switch or route server, Owen's theory seems like a good hypothesis and might be a good place to start. Mainswitch-ge-0/0/11 MAC statistics: Receive Transmit Total octets 47973148598 48576691195 Total packets 355364271 338323850 Unicast packets 355185413 282081737 Broadcast packets 102492 1488675 Multicast packets 76366 54753438 CRC/Align errors 0 0 FIFO errors 0 0 MAC control frames 0 0 MAC pause frames 0 0 Oversized frames 0 Jabber frames 0 Fragment frames 0 Code violations 0 Autonegotiation information: Negotiation status: Complete Link partner: Link mode: Full-duplex, Flow control: Symmetric/Asymmetric, Remote fault: OK, Link partner Speed: 1000 Mbps Local resolution: Flow control: Symmetric, Remote fault: Link OK Mainswitch-ge-0/0/1 MAC statistics: Receive Transmit Total octets 180901973 5461408588 Total packets 1389854 57880557 Unicast packets 1353384 1457681 Broadcast packets 0 1591637 Multicast packets 36470 54831239 CRC/Align errors 0 0 FIFO errors 0 0 MAC control frames 0 0 MAC pause frames 0 0 Oversized frames 0 Jabber frames 0 Fragment frames 0 Code violations 0 Autonegotiation information: Negotiation status: Complete Link partner: Link mode: Full-duplex, Flow control: Symmetric/Asymmetric, Remote fault: OK, Link partner Speed: 1000 Mbps Local resolution: Flow control: Symmetric, Remote fault: Link OK RouterServer1-bce1 ... media: Ethernet autoselect (1000baseT <full-duplex,flowcontrol,rxpause,txpause>) status: active ######################################################################## To unsubscribe from the MICE-DISCUSS list, click the following link: http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1 ######################################################################## To unsubscribe from the MICE-DISCUSS list, click the following link: http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1

Dan, I sent an e-mail to FWR, but didn't get a response back... :-( Steve On 10/03/2011 09:48 AM, Dan Boehlke wrote:

Steve,

Have they talked with FWR?

-- Dan Boehlke Sr. Network Engineer TIES Technical Services dan.boehlke@ties.k12.mn.us 651-999-6213 www.ties.k12.mn.us

On Oct 3, 2011, at 9:33 AM, Steve Howard wrote:

...

Hello,

This isn't really a MICE question, but I figure somebody on the list would know the answer and I'd prefer to send the business to a MICE member.

I have a customer that is looking to get to the Sungard data center on Energy Park Drive. Does anybody know of any reasonably priced ethernet connectivity to get there from 511?

Thanks, Steve

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I don't know if you've talked to Sungard directly, but they have a POP in 511 as well.

I stopped in quite awhile ago to approach them about connecting to MICE. The guy I talked to said it was a corporate decision. If someone knows the right contact please reach out to them. Sungard would be a nice addition to MICE. Jay ######################################################################## To unsubscribe from the MICE-DISCUSS list, click the following link: http://lists.iphouse.net/cgi-bin/wa?SUBED1=MICE-DISCUSS&A=1