What is the best MTU size for BSNL FTTH connections?

@sloj Most of the consumer grade router doesn't have that option like my TP-Link AX20





Code: 
####################################################################
#                  Archer AX20 System Log
# Time = 2024-04-23 13:37:08
# H-Ver = 1.20 ; S-Ver = 1.3.6 Build 20230830 rel.15380
# LAN: I = 192.168.1.1 ; M = 255.255.255.0 ; MAC = 3C:84:6A:FF:FF:FF
# WAN: W = pppoeshare ; I = 117.214.205.217 ; M = 255.255.255.255 ; MAC = 3C:84:6A:FF:FF:FF
#      G = 117.214.205.1 ; D1 = 1.1.1.1 ; D2 = 1.0.0.1
# Clients connected: 11 ; WI-FI : 10
####################################################################
2024-04-23 13:36:48 ppp[14194]: <6> 261091 ppp receive IPCP ACK
2024-04-23 13:36:48 ppp[14194]: <6> 261101 ppp receive IPV6CP ACK
2024-04-23 13:36:48 ppp[14194]: <6> 261090 ppp send IPCP Req options(addr=117.214.205.217;dns1=218.248.112.193;dns2=218.248.112.225;)
2024-04-23 13:36:48 ppp[14194]: <6> 261093 ppp receive IPCP NAK options(addr=117.214.205.217;dns1=218.248.112.193;dns2=218.248.112.225;)
2024-04-23 13:36:48 ppp[14194]: <6> 261100 ppp send IPV6CP Req options(ifaceid=48c4:a183:0007:dd00 ;)
2024-04-23 13:36:48 ppp[14194]: <6> 261090 ppp send IPCP Req options(addr=0.0.0.0;dns1=0.0.0.0;dns2=0.0.0.0;)
2024-04-23 13:36:48 ppp[14194]: <6> 261081 ppp receive CHAP Success: CHAP authentication success
2024-04-23 13:36:48 ppp[14194]: <6> 261078 ppp send CHAP Response [email protected]
2024-04-23 13:36:48 ppp[14194]: <6> 261077 ppp receive CHAP Challenge name=kol-cpf-dc-01
2024-04-23 13:36:48 ppp[14194]: <6> 261060 ppp send LCP ACK
2024-04-23 13:36:48 ppp[14194]: <6> 261058 ppp receive LCP Request options(mru=1492;authtype=PPP_CHAP|type(MD5);magic=0x7c87340;)
2024-04-23 13:36:45 ppp[14194]: <6> 261064 ppp receive LCP ACK
2024-04-23 13:36:45 ppp[14194]: <6> 261061 ppp send LCP Request options(mru=1492;magic=0x7ece3805;)
2024-04-23 13:36:45 ppp[14194]: <6> 261025 pppoe receive PADS sess-id(1)
2024-04-23 13:36:45 ppp[14194]: <6> 261024 pppoe send PADR Host-Uniq(3772)
2024-04-23 13:36:45 ppp[14194]: <6> 261022 pppoe receive PADO form AC-MAC(02:00:5e:00:00:05)
2024-04-23 13:36:45 ppp[14194]: <6> 261023 pppoe receive PADO AC-Name(kol-cpf-dc-01)
2024-04-23 13:36:45 ppp[14194]: <6> 261021 pppoe send PADI Host-Uniq(3772)
2024-04-23 13:36:45 ppp[14194]: <6> 261026 pppoe send PADT due to(resending PADI)
2024-04-23 13:36:43 ppp[8286]: <6> 261026 pppoe send PADT due to(phase disconnect device)
2024-04-23 13:36:43 ppp[8286]: <6> 261066 ppp send LCP TermReq due to User request
2024-04-23 13:35:42 ppp[8286]: <6> 261091 ppp receive IPCP ACK
2024-04-23 13:35:42 ppp[8286]: <6> 261101 ppp receive IPV6CP ACK
2024-04-23 13:35:42 ppp[8286]: <6> 261090 ppp send IPCP Req options(addr=117.214.205.217;dns1=218.248.112.193;dns2=218.248.112.225;)
2024-04-23 13:35:42 ppp[8286]: <6> 261093 ppp receive IPCP NAK options(addr=117.214.205.217;dns1=218.248.112.193;dns2=218.248.112.225;)
2024-04-23 13:35:42 ppp[8286]: <6> 261100 ppp send IPV6CP Req options(ifaceid=5c20:b327:8433:6baf ;)
2024-04-23 13:35:42 ppp[8286]: <6> 261090 ppp send IPCP Req options(addr=0.0.0.0;dns1=0.0.0.0;dns2=0.0.0.0;)
2024-04-23 13:35:42 ppp[8286]: <6> 261081 ppp receive CHAP Success: CHAP authentication success
2024-04-23 13:35:42 ppp[8286]: <6> 261078 ppp send CHAP Response [email protected]
2024-04-23 13:35:42 ppp[8286]: <6> 261077 ppp receive CHAP Challenge name=kol-cpf-dc-01
2024-04-23 13:35:42 ppp[8286]: <6> 261064 ppp receive LCP ACK
2024-04-23 13:35:42 ppp[8286]: <6> 261060 ppp send LCP ACK
2024-04-23 13:35:42 ppp[8286]: <6> 261058 ppp receive LCP Request options(mru=1492;authtype=PPP_CHAP|type(MD5);magic=0x48e3367c;)
2024-04-23 13:35:42 ppp[8286]: <6> 261061 ppp send LCP Request options(mru=1460;magic=0xa35907e9;)
2024-04-23 13:35:42 ppp[8286]: <6> 261025 pppoe receive PADS sess-id(1)
2024-04-23 13:35:42 ppp[8286]: <6> 261024 pppoe send PADR Host-Uniq(205e)
2024-04-23 13:35:42 ppp[8286]: <6> 261022 pppoe receive PADO form AC-MAC(02:00:5e:00:00:05)
2024-04-23 13:35:42 ppp[8286]: <6> 261023 pppoe receive PADO AC-Name(kol-cpf-dc-01)
2024-04-23 13:35:42 ppp[8286]: <6> 261021 pppoe send PADI Host-Uniq(205e)
2024-04-23 13:35:42 ppp[8286]: <6> 261026 pppoe send PADT due to(resending PADI)
 
Last edited:
@luckyph Yup, I have a consumer grade router too. That's why I said custom router in my previous post.
Also, it seems we are connected to the same AC from your log. Have you experienced any occasional and brief slowdown or non responsiveness from the server at times while connected?
 
After BNG upgrade they forgot to change AC Name 🤣
Legacy BNG: imp-ras-bng-tbv-01-B221E120605023
New BNG: kol-cpf-dc-01
 
Let me try 1492 on my BSNL connection tomorrow. Thanks guys...cheers
 
Changed over to 1492 and so far so good.
 
Guys do any of you know the PPPoE TR-069 VOIP server, password and other network related settings for a BSNL ONT just in case it has to be reset? I am based in Pune MH.

I have saved my config file but if you can share these settings it would be great.
 
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