I have a CISCO ISR4431/K9 4431 router with 2 free module slots and need to be able to accept a SM/LC fiber connection. Can someone point me to what board I should be ordering?
Posts published by “John P”
So i have a capture that has some NBNS (NetBios name service) packets in it
Here are some of the info of these packets that wireshark shows :
1.Refresh NB PC2<20>
2.some are Registration NB PC2<00>
So I'm looking at a wireshark capture and there is a lot of WPAD queries with NBNS and LLMNR protocols
I understand that windows uses WPAD to locate nearby proxy servers and connect to them automatically, but my question is,...
My problem is that 5-10 times a day for about 5 minute Internet light of my modem goes off but the DSL remains on, i can wait 4-5 minute or restart my modem to regain connection. and of course in the meantime i have no inte...
So first off, do ethernet sends ack frames or not?
if it doesn't : then how does a router know whether its neighbors are down or not?
if it does : then is it cumulative ack with an ack timer or one ack per received frame?
So basically do the modern routers in the internet still use 1500 as the MTU of Ethernet? or the 1500 Byte was for the old days?
What I'm asking here is what is the MTU of Ethernet in modern Networks?
and if it is 1500 byte...
So basically for each of the GBN, SR and TCP's retransmission method, i have 2 question:
1.Is there a Timeout timer for EACH packet or one timeout timer for all of the packets?
2.Is there a cumulative ack timer in the recei...