Command Reference Guide

64 ● dh 3Com Router 5000 Family and Router 6000 Family
Command Reference
dh
Purpose Use the dh command to select the Diffie-Hellman group for an IKE proposal.
Use the undo dh command to restore the Diffie-Hellman group for an IKE proposal
to the default.
Syntax dh { group1 | group2 | group5 | group14 }
undo dh
Parameters group1
Selects group1, that is, the 768-bit Diffie-Hellman
group, for key negotiation at phase 1 of IKE.
group2
Selects group2, that is, the 1024-bit Diffie-Hellman
group, for key negotiation at phase 1 of IKE.
group5
Selectes group5, that is, the 1536-bit Diffie-Hellman
group, for key negotiation at phase 1 of IKE.
group14
Selectes group14, that is, the 2048-bit Diffie-Hellman
group, for key negotiation at phase 1 of IKE.
Default By default, group1, that is, 768-bit Diffie-Hellman group is used.
Example Specify 768-bit Diffie-Hellman for IKE proposal 10.
[3Com] ike proposal 10
[3Com-ike-proposal-10] dh group1
View This command can be used in the following views:
■ IKE Proposal view
Related Commands ■ ike proposal
■ display ike proposal