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Author: Admin | 2025-04-27
Or should demand PFS in requests received from the peer: crypto dynamic-map dynamic-map-name dynamic-seq-numset pfs[group14|group15|group16|group19|group20|group21] Dynamic-map-name specifies the name of the crypto map entry that refers to a pre-existing dynamic crypto map. Dynamic-seq-num specifies the sequence number that corresponds to the dynamic crypto map entry. Example: crypto dynamic-map dyn1 10 set pfs group14 Step 5 Add the dynamic crypto map set into a static crypto map set. Be sure to set the crypto maps referencing dynamic maps to be the lowest priority entries (highest sequence numbers) in a crypto map set. crypto map map-name seq-num ipsec-isakmp dynamic dynamic-map-name Map-name specifies the name of the crypto map set. Dynamic-map-name specifies the name of the crypto map entry that refers to a pre-existing dynamic crypto map. Example: crypto map mymap 200 ipsec-isakmp dynamic dyn1 Provide Site-to-Site Redundancy You can define multiple IKEv1 peers by using crypto maps to provide redundancy. This configuration is useful for site-to-site VPNs. This feature is not supported with IKEv2. If one peer fails, the ASA establishes a tunnel to the next peer associated with the crypto map. It sends data to the peer that it has successfully negotiated with, and that peer becomes the active peer. The active peer is the peer that the ASA keeps trying first for follow-on negotiations until a negotiation fails. At that point the ASA goes on to the next peer. The ASA cycles back to the first peer when all peers associated with the crypto map have failed. Managing IPsec VPNs
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