Configure a BGP Peer with MP-BGP for IPv4 or IPv6 Unicast

After you Configure BGP, configure a BGP peer with MP-BGP for IPv4 or IPv6 unicast for either of the following reasons:
  • To have your BGP peer carry IPv6 unicast routes, configure MP-BGP with the Address Family Type of
    IPv6
    and Subsequent Address Family of
    Unicast
    so that the peer can send BGP updates that include IPv6 unicast routes. BGP peering (Local Address and Peer Address) can still both be IPv4 addresses, or they can both be IPv6 addresses.
  • To perform BGP peering over IPv6 addresses (
    Local Address
    and
    Peer Address
    use IPv6 addresses).
The following task shows how to enable a BGP peer with MP-BGP so it can carry IPv6 unicast routes, and so it can peer using IPv6 addresses.
The task also shows how to view the unicast or multicast route tables, and how to view the forwarding table, the BGP local RIB, and BGP RIB Out (routes sent to neighbors) to see routes from the unicast or multicast route table or a specific address family (IPv4 or IPv6).
  1. Enable MP-BGP Extensions for a peer.
    Configure the following so that a BGP peer can carry IPv4 or IPv6 unicast routes in Updates packets and the firewall can use IPv4 or IPv6 addresses to communicate with its peer.
    1. Select
      Network
      Virtual Routers
      and select the virtual router you are configuring.
    2. Select
      BGP
      .
    3. Select
      Peer Group
      and select a peer group.
    4. Select a BGP peer (router).
    5. Select
      Addressing
      .
    6. Select
      Enable MP-BGP Extensions
      for the peer.
    7. For
      Address Family Type
      , select
      IPv4
      or
      IPv6
      . For example, select IPv6.
    8. For
      Subsequent Address Family
      ,
      Unicast
      is selected. If you chose
      IPv4
      for the Address Family, you can select
      Multicast
      also.
    9. For
      Local Address
      , select an
      Interface
      and optionally select an
      IP
      address, for example, 2001:DB8:55::/32
    10. For
      Peer Address
      , enter the peer’s
      IP
      address, using the same address family (IPv4 or IPv6) as the Local Address, for example, 2001:DB8:58::/32.
    11. Select
      Advanced
      .
    12. (
      Optional
      )
      Enable Sender Side Loop Detection
      . When you enable Sender Side Loop Detection, the firewall will check the AS_PATH attribute of a route in its FIB before it sends the route in an update, to ensure that the peer AS number is not on the AS_PATH list. If it is, the firewall removes it to prevent a loop
    13. Click
      OK
      .
  2. (
    Optional
    ) Create a static route and install it in the unicast route table because you want the route to be used only for unicast purposes.
    1. Select
      Network
      Virtual Routers
      and select the virtual router you are configuring.
    2. Select
      Static Routes
      , select
      IPv4
      or
      IPv6
      , and
      Add
      a route.
    3. Enter a
      Name
      for the static route.
    4. Enter the IPv4 or IPv6
      Destination
      prefix and netmask, depending on whether you chose IPv4 or IPv6.
    5. Select the egress
      Interface
      .
    6. Select the
      Next Hop
      as
      IPv6 Address
      (or
      IP Address
      if you chose IPv4) and enter the address of the next hop to which you want to direct unicast traffic for this static route.
    7. Enter an
      Admin Distance
      .
    8. Enter a
      Metric
      .
    9. For
      Route Table
      , select
      Unicast
      .
    10. Click
      OK
      .
  3. Commit the configuration.
    Click
    Commit
    .
  4. View the unicast or multicast route table.
    1. Select
      Network
      Virtual Routers
      .
    2. In the row for the virtual router, click
      More Runtime Stats
      .
    3. Select
      Routing
      Route Table
      .
    4. For
      Route Table
      , select
      Unicast
      or
      Multicast
      to display only those routes.
    5. For
      Display Address Family
      , select
      IPv4 Only
      ,
      IPv6 Only
      , or
      IPv4 and IPv6
      to display only routes for that address family.
      Selecting
      Multicast
      with
      IPv6 Only
      is not supported.
  5. View the Forwarding Table.
    1. Select
      Network
      Virtual Routers
      .
    2. In the row for the virtual router, click
      More Runtime Stats
      .
    3. Select
      Routing
      Forwarding Table
      .
    4. For
      Display Address Family
      , select
      IPv4 Only
      ,
      IPv6 Only
      , or
      IPv4 and IPv6
      to display only routes for that address family.
  6. View the BGP RIB tables.
    1. View the BGP Local RIB, which shows the BGP routes that the firewall uses to route BGP packets.
      1. Select
        Network
        Virtual Routers
        .
      2. In the row for the virtual router, click
        More Runtime Stats
        .
      3. Select
        BGP
        Local RIB
        .
      4. For
        Route Table
        , select
        Unicast
        or
        Multicast
        to display only those routes.
      5. For
        Display Address Family
        , select
        IPv4 Only
        ,
        IPv6 Only
        , or
        IPv4 and IPv6
        to display only routes for that address family.
        Selecting
        Multicast
        with
        IPv6 Only
        is not supported.
    2. View the BGP RIB Out table, which shows the routes that the firewall sends to BGP neighbors.
      1. Select
        Network
        Virtual Routers
        .
      2. In the row for the virtual router, click
        More Runtime Stats
        .
      3. Select
        BGP
        RIB Out
        .
      4. For
        Route Table
        , select
        Unicast
        or
        Multicast
        to display only those routes.
      5. For
        Display Address Family
        , select
        IPv4 Only
        ,
        IPv6 Only
        , or
        IPv4 and IPv6
        to display only routes for that address family.
        Selecting
        Multicast
        with
        IPv6 Only
        is not supported.

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