<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">Jon,<br><br>Can you also give me the gslb policy section of your running config?<br><br>-Dave<br><br><div style="font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: "Torrez,Jon" <Jon_Torrez@securecomputing.com><br>To: dtemkin@yahoo.com; foundry-nsp@puck.nether.net<br>Sent: Thursday, July 3, 2008 10:29:25 AM<br>Subject: RE: [f-nsp] GSLB<br><br>
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<p class="MsoNormal"><span style="color: rgb(31, 73, 125);">Hey Dave.</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"><br>
Here you go.</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);">#show gslb policy</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Default metric order: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Metric processing order:</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> 1-Server health
check</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> 2-Round trip
time between remote SI and client</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> 3-Round-robin
selection</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> </span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> DNS active-only: ENABLE DNS
best-only: DISABLE DNS override: ENABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> DNS cache-proxy: ENABLE DNS
transparent-intercept: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> DNS cname-detect: DISABLE
Modify DNS response TTL: ENABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> DNS TTL: 60 (sec), DNS check
interval: 30 (sec)</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Remote SI status update
period: 30 (sec)</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Remote SI health-status update
period: 5 (sec)</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Session capacity threshold:
90% Session availability tolerance: 10%</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Round trip time tolerance: 2%,
round trip time explore percentage: 5%</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Round trip time cache prefix:
20, round trip time cache interval: 86400 (sec)</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Round trip time cache age
refresh: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Round trip time algorithm
selection: USE PASSIVE ONLY</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Connection load: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Weighted Site Metric:
DISABLE Weighted IP Metric: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Active Bindings Metric:
DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> Weighted selection: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> persistent hashing rehash
disabled: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> sticky: DISABLE</span></p>
<p class="MsoNormal"><span style="color: rgb(31, 73, 125);"> </span></p>
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<p class="MsoNormal"><b><span style="font-size: 10pt; font-family: "Tahoma","sans-serif";">From:</span></b><span style="font-size: 10pt; font-family: "Tahoma","sans-serif";"> dtemkin@yahoo.com
[mailto:dtemkin@yahoo..com] <br>
<b>Sent:</b> Thursday, July 03, 2008 12:59 PM<br>
<b>To:</b> Torrez,Jon; foundry-nsp@puck.nether.net<br>
<b>Subject:</b> Re: [f-nsp] GSLB</span></p>
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<p class="MsoNormal"> </p>
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<p class="MsoNormal" style="margin-bottom: 12pt;">Jon,<br>
<br>
Can you provide a snapshot of your "gslb policy"?<br>
<br>
-Dave</p>
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<p class="MsoNormal" style="margin-bottom: 12pt;">----- Original Message ----<br>
From: "Torrez,Jon" <Jon_Torrez@securecomputing.com><br>
To: foundry-nsp@puck.nether.net<br>
Sent: Thursday, July 3, 2008 6:38:45 AM<br>
Subject: [f-nsp] GSLB<span style="font-size: 12pt; font-family: "Times New Roman","serif";"></span></p>
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<p class="MsoNormal">Anyone out there using GSLB with A-RTT as the secondary
metric (first being health check of course) and the tie breaker being round
robin.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I have a GSLB enabled under those settings and when the TTL
times out for the initial answer the other site is issued as the answer for the
next time around, aka “flip flopping”.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Both sites are in N-AM.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">I would expect the flip flopping if the A-RTT data were
equal but it is not.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Any additional details info needed to understand the
situation please ask.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">Thanks all.</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
<p class="MsoNormal">-jon</p>
<p class="MsoNormal"> </p>
<p class="MsoNormal"> </p>
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