09-11-2020 07:22 AM
HI
1. in ipv6 route commands can i pute " ipv6 route prefix /length outgoing int next hop ip addres " and if so, is it only for ethernet link or only for serial link or both ?
2. can someone explain to me the "ipv6 address autoconfig default ? ( i understand what the ipv6 address autoconfig command do, its just the default parameter that confused me
3. in the ipv6 default route command types of parameters can i put after the ipv6 route ::/0 (can i put outgoing int / next hop ip address / both ) ?
thanks for all the help (:
09-11-2020 12:46 PM - edited 09-11-2020 01:06 PM
1. both Ethernet Or Serial will work with static routes. You can specify interface id Or You can use global IP address (from 2001:x:x:x) as next-hop. Or, you can use Link local IP (FE80::) as next hop but with that you must also add interface id. Examples:
ip route 2001:aaaa:bbbb:cccc::/64 Serial0/0 FE80::FF:FE00:2
ip route 2001:aaaa:bbbb:cccc::/64 2001:dddd:0:0:0::1
ip route 2001:aaaa:bbbb:cccc::/64 Gi0/0
3. Rules are same for ipv6 default routes as those mentioned at 1.
2. "default" keyword in "ipv6 address autoconfig means add a default route to configuration while autoconfig keyword means use SLAAC. it is like ip route ::/0 xyz but automatic for you. This means that entry with ::/0 via xyz will show up in routing table. Without "default" keyword, you will not see "default" route'
You should lab this in PT cause show ip routintg will look different; codes and AD is different since this is via SLAC.
Regards, ML
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09-15-2020 01:14 AM
thanks for the reply
1. i know these rules, what i am asking is about putting the outgoing int and next ip addres (not link local) on the same command
2. i understand but i feel like it would be perfect if you will explain a little bit more (:
09-15-2020 09:51 AM - edited 09-15-2020 09:52 AM
oh, yes, you can use it, example ipv6 route ::0/0 g1/0 2001:0:0:0::A
Re:2, "default" keyword in "ipv6 address autoconfig means router will add ipv6 route ::0/0 xyz for you. and you will see ::/0 via xyz in routing table. If you do not want default route to be added automatically; or you already have one confiugured, you skip "default" keyword at the end,
You can find more info on youtube; Also, I would recommend CCNA books by W. Odom (ciscopress, 2016 and newer).
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