9.7 RIPng over NBMA

Ok quick question.  I see lotts of confusion on how to configure RPIng over frame.

 

1. Do I need the broadcast keyword?

2. do I need to make the link local address along wth the global address. 

 

 

Andy body have a good example?  Not really one in the VOL I guide.

Comments

  • RIPNG uses multicast, should we use the broadcast keyword then?

    What happens if you put broadcast twice on same DLCI?

    Putting global address in frame map depends if you want to ping the global address or not.

    I don't want to hand only the answers but to make you think. Post if you need more assistance.

  • Ok quick question.  I see lotts of confusion on how to configure RPIng over frame.

    1. Do I need the broadcast keyword?

    2. do I need to make the link local address along wth the global address. 

    HINT: RIPng work very similar to RIP ipv4 with a difference the received updates in RIPng are from link local address. 

  • Yep that’s good.    I see we would need the broadcast keyword because multicast is used.  And I think I understand the mapping now. 

     

     

    Thanks.  J

     

    From: [email protected] [mailto:[email protected]] On Behalf Of daniel.dib
    Sent: Tuesday, March 27, 2012 8:47 AM
    To: Bodnar, Edward
    Subject: Re: [iewb-rs-vol1-v5-ipv6] 9.7 RIPng over NBMA

     

    RIPNG uses multicast, should we use the broadcast keyword then?

    What happens if you put broadcast twice on same DLCI?

    Putting global address in frame map depends if you want to ping the global address or not.

    I don't want to hand only the answers but to make you think. Post if you need more assistance.




    Internetwork Expert - The Industry Leader in CCIE Preparation
    http://www.internetworkexpert.com

    Subscription information may be found at:
    http://www.ieoc.com/forums/ForumSubscriptions.aspx

  • Yep that’s good.    I see we would need the broadcast keyword because multicast is used.  And I think I understand the mapping now.

    The very similar concept goes along with other IPv6 routing protocols atleast frame relay mapping wise.

  • 1. Do I need the broadcast keyword?

    Yes RIP uses multicast address as same as in IPv4, you need to enable pseudo broadcast to allow multicast over NBMA.

    R1#show ipv6 interface s1/0 | in FF
      IPv6 is enabled, link-local address is FE80::C800:14FF:FE98:0
        FF02::1
        FF02::2
        FF02::9
        FF02::1:FF00:1
        FF02::1:FF98:0

    2. do I need to make the link local address along wth the global address. 

    You don't need to enable pseudo broadcast for link-local address but you need to map the link-local address because next-hop is link-local address rather than global address:

    R   2003::1/128 [120/2]
         via FE80::C800:14FF:FE98:0, Serial1/0
    R   2003::3/128 [120/3]
         via FE80::C800:14FF:FE98:0, Serial1/0

    Andy body have a good example?  Not really one in the VOL I guide.

    Here is example: R1(HUB),R2(SPOKE) and R3(SPOKE):

    R1#show running-config interface s1/0
    Building configuration...

    Current configuration : 370 bytes
    !
    interface Serial1/0
     no ip address
     encapsulation frame-relay
     ipv6 address 2000::1/64
     ipv6 enable
     ipv6 rip RIPNG enable
     serial restart-delay 0
     frame-relay map ipv6 FE80::C802:15FF:FE9C:0 103
     frame-relay map ipv6 FE80::C801:3FF:FE40:0 102
     frame-relay map ipv6 2000::3 103 broadcast
     frame-relay map ipv6 2000::2 102 broadcast
     no frame-relay inverse-arp
     !
    end
    R2#show running-config interface s1/0
    Building configuration...

    Current configuration : 299 bytes
    !
    interface Serial1/0
     no ip address
     encapsulation frame-relay
     ipv6 address 2000::2/64
     ipv6 rip RIPNG enable
     serial restart-delay 0
     frame-relay map ipv6 FE80::C800:14FF:FE98:0 201
     frame-relay map ipv6 2000::3 201
     frame-relay map ipv6 2000::1 201 broadcast
     no frame-relay inverse-arp
     !
    end
    !

    R2#ping 2003::3

    Type escape sequence to abort.
    Sending 5, 100-byte ICMP Echos to 2003::3, timeout is 2 seconds:
    !!!!!
    Success rate is 100 percent (5/5), round-trip min/avg/max = 104/172/260 ms

    Good Luck

Sign In or Register to comment.