R211x-HP Flexfabric 11900 Security Command Reference

Table Of Contents
198
ipsec global-df-bit
Use ipsec global-df-bit to set the DF bit for outer IP headers of encapsulated IPsec packets on all
interfaces.
Use undo ipsec global-df-bit to restore the default.
Syntax
ipsec global-df-bit { clear | copy | set }
undo ipsec global-df-bit
Default
The DF bit of original IP headers is copied to the outer IP headers for encapsulated IPsec packets.
Views
System view
Predefined user roles
network-admin
mdc-admin
Parameters
clear: Clears the DF bit for outer IP headers. In this case, the encapsulated IPsec packets can be
fragmented.
copy: Copies the DF bit of the original IP headers to the outer IP headers.
set: Sets the DF bit for outer IP headers. In this case, the encapsulated IPsec packets cannot be
fragmented.
Usage guidelines
This command is effective only when the IPsec encapsulation mode is tunnel mode. It is not effective in
transport mode because outer IP headers are not added in transport mode.
This command does not change the DF bit for the original IP headers of encapsulated packets.
Examples
# Set the DF bit for outer IP headers of encapsulated IPsec packets on all interfaces.
<Sysname> system-view
[Sysname] ipsec global-df-bit set
Related commands
ipsec df-bit
ipsec { ipv6-policy | policy }
Use ipsec { ipv6-policy | policy } to create an IPsec policy entry, and enter IPsec policy view.
Use undo ipsec { ipv6-policy | policy } to delete the specified IPsec policy.
Syntax
ipsec { ipv6-policy | policy } policy-name seq-number [ isakmp | manual ]