[171826] in North American Network Operators' Group
Possible Comcast Load Balancing issues in Chicago?
daemon@ATHENA.MIT.EDU (Metro-Inet Netops)
Thu May 15 11:10:24 2014
X-Original-To: nanog@nanog.org
Date: Thu, 15 May 2014 10:10:16 -0500
From: Metro-Inet Netops <mi.netops@gmail.com>
To: nanog@nanog.org
Errors-To: nanog-bounces@nanog.org
It=E2=80=99s possible I=E2=80=99m missing something, but it looks like traf=
fic from Comcast
business customers in the Minneapolis/St. Paul area is not all making it
through Chicago to my VPN endpoints. Testing to some of my address space
from one of the Comcast remote VPN sites, I can get to some numbers and not
others (odds/evens switch roles depending on the block I trace) fall apart
hopping though Chicago. Testing to the same addresses from the HE looking
glass, everything seems fine.
Any input or even knowledge that it=E2=80=99s being worked on would be
appreciated. Traceroutes below:
Fails:
HUGO-CH-2921#trace 199.249.109.13
Type escape sequence to abort.
Tracing the route to vpn.metro-inet.us (199.249.109.13)
VRF info: (vrf in name/id, vrf out name/id)
1 75-149-158-38-minnesota.hfc.comcastbusiness.net (75.149.158.38) 0 msec
0 msec 0 msec
2 73.237.168.1 12 msec 12 msec 16 msec
3 te-4-2-ur02.whitebear.mn.minn.comcast.net (68.85.167.37) 16 msec 16
msec 16 msec
4 te-2-1-ur02.oakdale.mn.minn.comcast.net (68.87.174.138) 16 msec 16 msec
16 msec
5 te-8-3-ur01.oakdale.mn.minn.comcast.net (68.87.174.109) 20 msec 12 msec
16 msec
6 te-0-3-0-5-ar01.crosstown.mn.minn.comcast.net (69.139.176.61) 16 msec
16 msec 20 msec
7 pos-0-0-0-0-ar01.roseville.mn.minn.comcast.net (68.87.174.194) 16 msec
16 msec 12 msec
8 he-1-12-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.77) 24 msec
24 msec 28 msec
9 * * *
10 *
Gets Through:
HUGO-CH-2921#trace 199.249.109.14
Type escape sequence to abort.
Tracing the route to 199.249.109.14
VRF info: (vrf in name/id, vrf out name/id)
1 75-149-158-38-minnesota.hfc.comcastbusiness.net (75.149.158.38) 4 msec
0 msec 0 msec
2 73.237.168.1 8 msec 12 msec 8 msec
3 te-4-2-ur01.whitebear.mn.minn.comcast.net (68.85.167.33) 12 msec 12
msec 12 msec
4 te-2-1-ur02.shoreview.mn.minn.comcast.net (68.87.174.129) 8 msec 12
msec 12 msec
5 te-8-3-ur01.shoreview.mn.minn.comcast.net (68.87.174.125) 12 msec 8
msec 8 msec
6 te-0-3-0-6-ar01.roseville.mn.minn.comcast.net (68.87.174.178) 12 msec
12 msec 12 msec
7 he-1-11-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.73) 28 msec
20 msec 24 msec
8 ix-7-0-3-0.tcore1.CT8-Chicago.as6453.net (64.86.137.33) 16 msec 16 msec
20 msec
9 206.82.141.90 20 msec 20 msec 20 msec
10 hurricane-ic-124397-chi-bb1.c.telia.net (213.248.104.214) 24 msec 24
msec 28 msec
11 100ge13-1.core1.msp1.he.net (184.105.223.178) 36 msec 24 msec 28 msec
12 city-of-roseville.gigabitethernet3-8.core1.msp1.he.net (184.105.249.218)
28 msec 28 msec 24 msec
13 199.249.109.227 28 msec 24 msec 28 msec
Gets Through:
HUGO-CH-2921#trace 67.88.181.25
Type escape sequence to abort.
Tracing the route to ip67-88-181-25.z181-88-67.customer.algx.net(67.88.181.=
25)
VRF info: (vrf in name/id, vrf out name/id)
1 pubwp.comcast.net (75.149.158.38) 0 msec 0 msec 0 msec
2 73.237.168.1 8 msec 8 msec 8 msec
3 te-4-2-ur01.whitebear.mn.minn.comcast.net (68.85.167.33) 12 msec 12
msec 8 msec
4 te-2-1-ur02.shoreview.mn.minn.comcast.net (68.87.174.129) 8 msec 8 msec
12 msec
5 te-8-3-ur01.shoreview.mn.minn.comcast.net (68.87.174.125) 12 msec 12
msec 8 msec
6 te-0-3-0-6-ar01.roseville.mn.minn.comcast.net (68.87.174.178) 8 msec 12
msec 12 msec
7 he-1-12-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.77) 24 msec
20 msec 16 msec
8 ix-2-3-0-0.tcore1.CT8-Chicago.as6453.net (64.86.137.41) 24 msec 16 msec
40 msec
9 p5-1.ir1.chicago2-il.us.xo.net (206.111.2.33) 68 msec 20 msec 80 msec
10 207.88.14.193.ptr.us.xo.net (207.88.14.193) 32 msec 32 msec 36 msec
11 ae0d0.mcr1.minneapolis-mn.us.xo.net (216.156.0.170) 28 msec 28 msec 28
msec
Fails:
HUGO-CH-2921#trace 67.88.181.26
Type escape sequence to abort.
Tracing the route to webvpn.metro-inet.us (67.88.181.26)
VRF info: (vrf in name/id, vrf out name/id)
1 pubwp.comcast.net (75.149.158.38) 0 msec 0 msec 0 msec
2 73.237.168.1 8 msec 8 msec 8 msec
3 te-4-2-ur02.whitebear.mn.minn.comcast.net (68.85.167.37) 8 msec 12 msec
8 msec
4 te-2-1-ur02.oakdale.mn.minn.comcast.net (68.87.174.138) 8 msec 12 msec
20 msec
5 te-8-3-ur01.oakdale.mn.minn.comcast.net (68.87.174.109) 8 msec 8 msec
12 msec
6 te-0-3-0-5-ar01.crosstown.mn.minn.comcast.net (69.139.176.61) 12 msec
12 msec 12 msec
7 pos-0-1-0-0-ar01.roseville.mn.minn.comcast.net (68.87.174.2) 8 msec 8
msec 12 msec
8 he-1-13-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.81) 24 msec
24 msec 20 msec
9 * * *
10 * * *
11 * * *
12 * * *
Gets Through:
HUGO-CH-2921#trace 67.88.181.27
Type escape sequence to abort.
Tracing the route to ip67-88-181-27.z181-88-67.customer.algx.net(67.88.181.=
27)
VRF info: (vrf in name/id, vrf out name/id)
1 pubwp.comcast.net (75.149.158.38) 4 msec 0 msec 4 msec
2 73.237.168.1 8 msec 12 msec 8 msec
3 te-4-2-ur02.whitebear.mn.minn.comcast.net (68.85.167.37) 12 msec 12
msec 8 msec
4 te-8-3-ur01.whitebear.mn.minn.comcast.net (68.87.174.133) 12 msec 12
msec 4 msec
5 te-2-1-ur02.shoreview.mn.minn.comcast.net (68.87.174.129) 8 msec 12
msec 8 msec
6 te-8-3-ur01.shoreview.mn.minn.comcast.net (68.87.174.125) 16 msec 8
msec 8 msec
7 te-0-3-0-6-ar01.roseville.mn.minn.comcast.net (68.87.174.178) 12 msec
12 msec 16 msec
8 he-1-13-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.81) 20 msec
20 msec 20 msec
9 ix-2-2-1-0.tcore1.CT8-Chicago.as6453.net (64.86.137.37) 16 msec 16 msec
16 msec
10 p5-1.ir1.chicago2-il.us.xo.net (206.111.2.33) 32 msec 72 msec 96 msec
11 207.88.14.193.ptr.us.xo.net (207.88.14.193) 36 msec 32 msec 32 msec
12 ae0d0.mcr1.minneapolis-mn.us.xo.net (216.156.0.170) 28 msec 28 msec 32
msec
13 * * *
Fails:
HUGO-CH-2921#trace 67.88.181.28
Type escape sequence to abort.
Tracing the route to ip67-88-181-28.z181-88-67.customer.algx.net(67.88.181.=
28)
VRF info: (vrf in name/id, vrf out name/id)
1 pubwp.comcast.net (75.149.158.38) 0 msec 0 msec 0 msec
2 73.237.168.1 12 msec 8 msec 12 msec
3 te-4-2-ur01.whitebear.mn.minn.comcast.net (68.85.167.33) 8 msec 8 msec
8 msec
4 te-2-1-ur02.shoreview.mn.minn.comcast.net (68.87.174.129) 8 msec 8 msec
12 msec
5 te-8-3-ur01.shoreview.mn.minn.comcast.net (68.87.174.125) 12 msec 8
msec 8 msec
6 te-0-3-0-6-ar01.roseville.mn.minn.comcast.net (68.87.174.178) 12 msec
12 msec 12 msec
7 he-1-11-0-0-cr01.350ecermak.il.ibone.comcast.net (68.86.94.73) 20 msec
20 msec 20 msec
8 * * *
9 * * *
10 *
Mark Mayfield
City of Roseville =E2=80=93 AS 54371
Network Systems Engineer
2660 Civic Center Drive
Roseville, MN 55113
651-792-7098 Office
