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Am Wed, 21 Sep 2016 12:32:48 -0700 |
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schrieb Grant <emailgrant@×××××.com>: |
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|
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> [...] |
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> [...] |
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> >> |
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> >> |
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> >> I'm seeing the issue again as usual but ping response times come |
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> >> back normal at about 50ms. I'll keep trying. |
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> > |
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> > Not sure if this came after or before switching your router to modem |
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> > mode... But if it happened before and is solved now, your router |
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> > really doesn't well with icmp packets or has problems with mss |
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> > clamping / pmtu. |
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> |
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> |
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> I did not try pinging before switching the device from router to |
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> modem. |
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> |
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> BTW, I read that setting CLAMPMSS=Yes in shorewall.conf is a necessity |
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> when using PPPoE but my connection is working fine without that |
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> setting. Should I set it anyway? |
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|
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If pmtu discovery is working correctly, this is - in theory - not |
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needed. It violates the protocol guarantees anyway. But it reduces |
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packet fragmentation with encapsulation protocols like pppoe (because |
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pppoe reserves some extra bytes of headers which reduces your amount of |
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payload per packet). |
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|
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-- |
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Regards, |
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Kai |
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Replies to list-only preferred. |
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