[89415] in North American Network Operators' Group
Load sharing traffic over 3 circuits - 1 eBGP session
daemon@ATHENA.MIT.EDU (Jeff Neuffer Jr)
Tue Mar 14 09:20:14 2006
From: "Jeff Neuffer Jr" <jneuffer@nstel.com>
To: <nanog@nanog.org>
Date: Tue, 14 Mar 2006 09:19:56 -0500
Errors-To: owner-nanog@merit.edu
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Hello,
I need clarification; appreciate any comments on list or off list.
Here is the backdrop,
* Our router is a Juniper and our IP transit provider's router is a Cisco.
* 1 ebgp session between us.
* Between us we have the following circuits,
2 DS3's
1 OC3 (burstable)
* Static routing is used with loopback addresses
I've setup and used bgp multi-hop for load sharing traffic across multiple
links before and I am quite comfortable with it.
Here is what I'm being told and what I'm seeking clarification on. I'm told
that my router can divert/stop sending traffic over the two slower links
when they become saturated (reach capacity), and the remaining circuit
(higher bandwidth) can continue to pass existing traffic flows and take on
additional traffic flows.
Can someone clarify if that is possible?
Thanks,
Jeff
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<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Hello,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I need clarification; appreciate any comments on list =
or off
list.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Here is the backdrop,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>* Our router is a Juniper and our IP transit =
provider’s
router is a Cisco.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>* 1 ebgp session between =
us.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>* Between us we have the following =
circuits,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>2 DS3’s <o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>1 OC3 (burstable)<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>* Static routing is used with loopback =
addresses<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>I’ve setup and used bgp multi-hop for load =
sharing
traffic across multiple links before and I am quite comfortable with =
it. <o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Here is what I’m being told and what I’m =
seeking
clarification on… I’m told that my router can divert/stop =
sending
traffic over the two slower links when they become saturated (reach =
capacity),
and the remaining circuit (higher bandwidth) can continue to pass =
existing
traffic flows and take on additional traffic =
flows.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Can someone clarify if that is =
possible?<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
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font-family:Arial'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Jeff<o:p></o:p></span></font></p>
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12.0pt'><o:p> </o:p></span></font></p>
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