3Com S7906E Command Reference Manual page 1646

Examples
# Enter BGP-VPNv4 subaddress family view.
<Sysname> system-view
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpnv4
[Sysname-bgp-af-vpnv4]
# Associate VPN instance vpn1 with an IPv4 address family and enter BGP VPN instance view.
<Sysname> system-view
[Sysname] ip vpn-instance vpn1
[Sysname-vpn-instance-vpn1] quit
[Sysname] bgp 100
[Sysname-bgp] ipv4-family vpn-instance vpn1
[Sysname-bgp-vpn1]
nesting-vpn
Syntax
nesting-vpn
undo nesting-vpn
View
BGP-VPNv4 subaddress family view
Default Level
2: System level
Parameters
None
Description
Use the nesting-vpn command to enable the nested VPN function.
Use the undo nesting-vpn command to disable the nested VPN function.
By default, the nested VPN function is disabled.
If a nested VPN peer connected to a PE needs to advertise VPNv4 routes, you need to enable nested
VPN on the PE.
Examples
# Enable nested VPN.
<Sysname> system-view
[Sysname] bgp 10
[Sysname-bgp] ipv4-family vpnv4
[Sysname-bgp-af-vpnv4] nesting-vpn
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