13.37 Matching bullets with SG

Hi,

Can anyone please match bullet points with solution provided ? Some explanation on solution would be very welcome :

 

• Modify R1’s TCP configuration to meet the following requirements:
o Avoid the TCP “silly window syndrome”.
o Enable high-performance TCP options.
o Set the TCP window size to twice the standard 16 bit maximum
value.
o Limit the wait time for a TCP SYN response to the minimum.
o Enable the feature to avoiding fragmentation with TCP sessions.
o Hold no more that 16 packets in outgoing TCP queue.

Configuration

service nagle
ip tcp ecn
ip tcp selective-ack
ip tcp timestamp
ip tcp window-size 131070
ip tcp queuemax 16
ip tcp synwait-time 5
ip tcp path-mtu-discovery

 

Which is which please ?

 

Thanks,

Ciprian.

Comments

  • Hi Ciprian,

    After having quick look into your question, I think it's farily easy to identify the coresponding commands to the bullet points. Here is my answer;

    Avoid TCP "Silly window syndrome"

    => service nagle ( nagle's algorithm is used to avoid "silly window syndrome")

    Enable high-performance TCP options.

    => ip tcp selective-ack (My view, can be wrong)

    Set the TCP window size to twice the standard 16 bit maximum value.

    => ip tp window-size 131070

    Limit the wait time for a TCP SYN response to the minimum

    => ip tcp synwait-time 5

    Enable the feature to avoiding fragmentation with TCP sessions

    ip tcp path-mtu-discovery

    Hold no more than 16 packets in outgoing TCP queue.

    ip tcp queuemax 16

    Since the command syntax can be in different location as per the IOS automatic adjustment, you have to focus on the wording & verify it with the commands.

    Correct me if i'm wrong [;)]

    Good luck!

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