[nsp] ipv6 address ::X/128 on Cisco router

[Mohacsi Janos]

On Thu, 17 Jun 2004, Yinglam Cheung wrote:

> Hi,
>
> it seems that I cannot use any /128 ipv6 address on Cat6509. it's understood that :: and ::1 are reserved, but I'm not sure the others in /128. The cat6509 is running s720 with 12.2(17d)SXB.
>
> s720(config-if)#int lo0
> s720(config-if)#ipv addr ::7/128
> % Invalid address
>

Try using global addresses instead of nonsense addresses... ::7/128 is not
valid either link local or global usage. We are using /128 on loopback
addresses with global addressses on C65xx and it works ok.
Regards,

Janos Mohacsi
Network Engineer, Research Associate
NIIF/HUNGARNET, HUNGARY
Key 00F9AF98: 8645 1312 D249 471B DBAE  21A2 9F52 0D1F 00F9 AF98



> however, I can assign ::5/128 to a juniper router and actually I advertise this route to Cat6509:
> s720#sh ipv ro ospf
> IPv6 Routing Table - 10 entries
> Codes: C - Connected, L - Local, S - Static, R - RIP, B - BGP
>        I1 - ISIS L1, I2 - ISIS L2, IA - ISIS interarea, IS - ISIS summary
>        O - OSPF intra, OI - OSPF inter, OE1 - OSPF ext 1, OE2 - OSPF ext 2
> O   ::5/128 [110/1]
>      via FE80::290:69FF:FE98:3001, FastEthernet2/3
> s720# ping ipv ::5
> Type escape sequence to abort.
> Sending 5, 100-byte ICMP Echos to ::5, timeout is 2 seconds:
> !!!!!
> Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/4 ms
>
>
>
>
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