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< section id = "session-traffic" >
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< span id = "id1" ></ span >< h1 > Session Traffic< a class = "headerlink" href = "#session-traffic" title = "Link to this heading" > </ a ></ h1 >
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< p > The BNG Blaster can autogenerate bidirectional unicast
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session traffic for all addresses assigned to a session
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(IPv4, IPv6 and IPv6PD) and the corresponding network
interface function.</ p >
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< img alt = "Session Traffic" src = "../_images/bbl_session_traffic.png" />
< p > This is a powerful tool to quickly verify that forwarding
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is correctly set up and working.</ p >
< div class = "admonition note" >
< p class = "admonition-title" > Note</ p >
< p > All traffic sent from a network or a10nsp interfaces function
is called downstream. All traffic sent from an access interface
function is called upstream.</ p >
</ div >
< p > Those autogenerated traffic streams are named
< code class = "docutils literal notranslate" >< span class = "pre" > session-ipv4</ span ></ code > , < code class = "docutils literal notranslate" >< span class = "pre" > session-ipv6</ span ></ code > and < code class = "docutils literal notranslate" >< span class = "pre" > session-ipv6pd</ span ></ code > .</ p >
< img alt = "BNG Blaster Interactive Session" src = "../_images/bbl_interactive_session.png" />
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< section id = "configuration" >
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< h2 > Configuration< a class = "headerlink" href = "#configuration" title = "Link to this heading" > </ a ></ h2 >
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< p > The following example shows how to enable session traffic.</ p >
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< div class = "highlight-json notranslate" >< div class = "highlight" >< pre >< span ></ span >< span class = "p" > {</ span >
< span class = "w" > </ span >< span class = "nt" > " session-traffic" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > {</ span >
< span class = "w" > </ span >< span class = "nt" > " ipv4-pps" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 1</ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " ipv6-pps" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 1</ span >< span class = "p" > ,</ span >
< span class = "w" > </ span >< span class = "nt" > " ipv6pd-pps" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "mi" > 1</ span >
< span class = "w" > </ span >< span class = "p" > }</ span >
< span class = "p" > }</ span >
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</ pre ></ div >
</ div >
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< div class = "highlight-json notranslate" >< div class = "highlight" >< pre >< span ></ span >< span class = "p" > {</ span >< span class = "w" > </ span >< span class = "nt" > " session-traffic" </ span >< span class = "p" > :</ span >< span class = "w" > </ span >< span class = "p" > {}</ span >< span class = "w" > </ span >< span class = "p" > }</ span >
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</ pre ></ div >
</ div >
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< table class = "docutils align-default" >
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< thead >
< tr class = "row-odd" >< th class = "head" >< p > Attribute</ p ></ th >
< th class = "head" >< p > Description</ p ></ th >
</ tr >
</ thead >
< tbody >
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< tr class = "row-even" >< td >< p >< strong > autostart</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Automatically start session traffic as soon as the</ div >
< div class = "line" > corresponding session is established.</ div >
< div class = "line" > Default: true</ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-odd" >< td >< p >< strong > ipv4-pps</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Autogenerate bidirectional IPv4 traffic</ div >
< div class = "line" > between a network interface and all sessions.</ div >
< div class = "line" > Default: 0 (disabled)</ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-even" >< td >< p >< strong > ipv4-label</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Send downstream IPv4 traffic with the specified MPLS label.</ div >
< div class = "line" > Default: 0 (unlabeled)</ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-odd" >< td >< p >< strong > ipv4-address</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Overwrite network interface IPv4 address.</ div >
< div class = "line" > Default: < cite > network interface address</ cite ></ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-even" >< td >< p >< strong > ipv6-pps</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Generate bidirectional IPv6 traffic</ div >
< div class = "line" > between a network interface and all sessions.</ div >
< div class = "line" > Default: 0 (disabled)</ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-odd" >< td >< p >< strong > ipv6-label</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Send downstream IPv6 traffic with the specified MPLS label.</ div >
< div class = "line" > Default: 0 (unlabeled)</ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-even" >< td >< p >< strong > ipv6-address</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Overwrite network interface IPv6 address</ div >
< div class = "line" > Default: < cite > network interface address</ cite ></ div >
</ div >
</ td >
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</ tr >
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< tr class = "row-odd" >< td >< p >< strong > ipv6pd-pps</ strong ></ p ></ td >
< td >< div class = "line-block" >
< div class = "line" > Generate bidirectional IPv6PD (delegated prefix) traffic</ div >
< div class = "line" > between a network interface and all sessions.</ div >
< div class = "line" > Default: 0 (disabled)</ div >
</ div >
</ td >
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</ tr >
</ tbody >
</ table >
< p > This traffic is generated between the session and a network
interface. In case of multiple network interfaces, the preferred
network interfaces can be selected using the < code class = "docutils literal notranslate" >< span class = "pre" > network-interface</ span ></ code >
option in the corresponding access configuration.</ p >
</ section >
< section id = "verification" >
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< h2 > Verification< a class = "headerlink" href = "#verification" title = "Link to this heading" > </ a ></ h2 >
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< p > The final report includes detailed information
for session traffic.</ p >
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< div class = "highlight-none notranslate" >< div class = "highlight" >< pre >< span ></ span > Session Traffic (Global):
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------------------------------------------------------------------------------
Config:
PPS IPv4: 1
PPS IPv6: 1
PPS IPv6PD: 1
Verified Traffic Flows: 96000/96000 (100.00%)
Downstream IPv4: 16000
Downstream IPv6: 16000
Downstream IPv6PD: 16000
Upstream IPv4: 16000
Upstream IPv6: 16000
Upstream IPv6PD: 16000
Violations: > 1s > 1s-2s > 2s-3s > 3s
Downstream IPv4: 12278 ( 12.79%) 3071 3040 6167
Downstream IPv6: 12252 ( 12.76%) 3185 2900 6167
Downstream IPv6PD: 12306 ( 12.82%) 3123 2978 6205
Upstream IPv4: 12314 ( 12.83%) 3104 3033 6177
Upstream IPv6: 12252 ( 12.76%) 3184 2891 6177
Upstream IPv6PD: 12361 ( 12.88%) 3178 2957 6226
Total: 73763 ( 76.84%) 18845 17799 37119
First Sequence Received: MIN AVG MAX
Downstream IPv4 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
Downstream IPv6 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
Downstream IPv6PD 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
Upstream IPv4 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
Upstream IPv6 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
Upstream IPv6PD 1 ( 1.00s) 9 ( 9.00s) 64 (64.00s)
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</ pre ></ div >
</ div >
< p > The < code class = "docutils literal notranslate" >< span class = "pre" > First</ span > < span class = "pre" > Sequence</ span > < span class = "pre" > Number</ span > < span class = "pre" > Received</ span ></ code > is used to measure the forwarding
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convergence. The session traffic starts automatically as soon as the session
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is established using the rate configured. All traffic flows in the BNG Blaster
start with the 64bit sequence number 1. Assuming the first sequence number
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received for a given flow is 5 and the configured rate is 1 PPS, this would
mean that it took between 4 and 5 seconds until forwarding is working.</ p >
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