description fragmentation and reassembly addrouter r1 int ser1 ser - $1a$ $1b$ ! vrf def v1 rd 1:1 exit int ser1 mtu 1500 enforce-mtu both vrf for v1 ipv4 addr 1.1.1.1 255.255.255.0 ipv6 addr 1234::1 ffff:: ipv4 reassembly 16 ipv4 fragmentation 1400 ipv6 reassembly 16 ipv6 fragmentation 1400 exit ! addrouter r2 int ser1 ser - $1b$ $1a$ ! vrf def v1 rd 1:1 exit int ser1 mtu 1500 enforce-mtu both vrf for v1 ipv4 addr 1.1.1.2 255.255.255.0 ipv6 addr 1234::2 ffff:: ipv4 reassembly 16 ipv4 fragmentation 1400 ipv6 reassembly 16 ipv6 fragmentation 1400 exit ! r1 tping 100 15 1.1.1.2 vrf v1 siz 222 r2 tping 100 15 1.1.1.1 vrf v1 siz 222 r1 tping 100 15 1234::2 vrf v1 siz 222 r2 tping 100 15 1234::1 vrf v1 siz 222 r1 tping 100 15 1.1.1.2 vrf v1 siz 2222 r2 tping 100 15 1.1.1.1 vrf v1 siz 2222 r1 tping 100 15 1234::2 vrf v1 siz 2222 r2 tping 100 15 1234::1 vrf v1 siz 2222 r1 tping -100 5 1.1.1.2 vrf v1 siz 2222 dont error r2 tping -100 5 1.1.1.1 vrf v1 siz 2222 dont error r1 tping -100 5 1234::2 vrf v1 siz 2222 dont error r2 tping -100 5 1234::1 vrf v1 siz 2222 dont error