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Redistributing the loopback interface route, Creating a sham link – H3C Technologies H3C S6800 Series Switches User Manual

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Redistributing the loopback interface route

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter BGP view.

bgp as-number N/A

3.

Enter BGP-VPN instance
view.

ip vpn-instance vpn-instance-name

N/A

4.

Enter BGP-VPN IPv4
unicast address family

view.

address-family ipv4 [ unicast ]

N/A

5.

Redistribute direct routes

into BGP (including the
loopback interface route).

import-route direct

By default, no direct routes are
redistributed into BGP.

Creating a sham link

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Enter OSPF view.

ospf [ process-id | router-id
router-id | vpn-instance
vpn-instance-name ] *

H3C recommends that you specify
a router ID.

3.

Configure the external route
tag for imported VPN routes. route-tag tag-value

If BGP runs within an MPLS
backbone, and the BGP AS

number is not greater than 65535,

the first two octets of the external
route tag are 0xD000 and the last

two octets are the local BGP AS

number. If the AS number is greater
than 65535, the external route tag

is 0.

4.

Enter OSPF area view.

area area-id

N/A

5.

Configure a sham link.

sham-link source-ip-address
destination-ip-address [ cost cost |
dead dead-interval | hello

hello-interval | { { hmac-md5 |

md5 } key-id { cipher cipher-string
| plain plain-string } | simple

{ cipher cipher-string | plain

plain-string } } | retransmit
retrans-interval | trans-delay

delay ] *

By default, no sham link is
configured.