Looking on the config, i don't see "ppp multilink" configured under the interface serial2 and 3. So is the reason the multilink is not negotiated during LCP with ISP. So add following config under the interface serial 2 and serial 3
ppp authentication chap
After that it should work ok. You can visit following url for config reference and troubleshooting.
Not really...Multilink ppp buys you a great feature of "fragmentation". So PPP packet will be fragmented and will be sent on each link of a multilink member.
Since we are talking about 2 individual point to point link (no mlppp), router already has two host routes to isp (/32 mask) for same destination so load balance will take place but no fragmentation. Sometimes routing may not work fine in that case.
So the best option is to have isp allow multilink ppp.
We are pleased to announce availability of Beta software for 16.6.3. 16.6.3 will be the second rebuild on the 16.6 release train targeted towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are looking for early feedback from custome...