In this post I will list some interesting things in IOS-XR
1st vrf unicast ipv6 max-prefix counts are limited on the small at 32prefixes. So if you want to limit a vrf to less ipv6-prefixes you CAN NOT.
RP/0/RSP1/CPU0:CRCHI1#show run vrf
Wed Aug 12 13:21:32.266 CST
description Network 192.168.10.0
address-family ipv4 unicast
maximum prefix 1000
address-family ipv6 unicast
maximum prefix 32 <------HERE
2nd, I found out the mgmt interface can not participate in IPv6 -RAs. So if you want to advertisea prefixes using the mgmt interfaces it will not work
3rd, when you try to exceed your max prefixes per that vrf, you will receive a warning and the prefixes that exceeds the limits will be drop.
Next, ipv6 address and ND RA is similar to IOS. Here's a sample cfg.
Lastly, like other devices, the max amount of IPV6 prefixes you can advertise is limited by the link MTU size. A 1500byte MTU limits you to approx 32-44 prefixes max depending on your RA configuration and if you have other goodies and ipv6 DNS, domain or search list.
NSE ( Network Security Expert) and Route/Switching Engineer.
kfelix -----a----t---- socpuppets ---dot---com
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