What are the advantages and disadvantages of direct forward and tunnel forward?

wlandoc · Created Jun 29, 2019 09:44:26

In tunnel forwarding mode, an AP encapsulates data packets from wireless users over a CAPWAP data tunnel and sends them to an AC. The AC then forwards these packets to an upper-layer network.

In direct forwarding mode, an AP directly forwards data packets from wireless users to an upper-layer network without encapsulating them over a CAPWAP data tunnel.

Data Forwarding Mode	Advantage	Disadvantage
Tunnel forwarding	An AC centrally forwards data packets from wireless users, ensuring security and facilitating centralized management.	Data packets from wireless users must be forwarded by an AC, which is not efficient and increases burdens on the AC.
Direct forwarding	Data packets from wireless users are directly forwarded without passing through an AC, which is efficient and reduces burdens on the AC.	Data packets from wireless users cannot be centrally managed.

More information: https://forum.huawei.com/enterprise/en/From-Beginner-to-Expert-WLAN-Common-Terms-Section-19-Direct-Forwarding-and-Tunnel-Forwarding/thread/532813-869

wlandoc · Created Jun 29, 2019 09:44:26

In tunnel forwarding mode, an AP encapsulates data packets from wireless users over a CAPWAP data tunnel and sends them to an AC. The AC then forwards these packets to an upper-layer network.

In direct forwarding mode, an AP directly forwards data packets from wireless users to an upper-layer network without encapsulating them over a CAPWAP data tunnel.

Data Forwarding Mode	Advantage	Disadvantage
Tunnel forwarding	An AC centrally forwards data packets from wireless users, ensuring security and facilitating centralized management.	Data packets from wireless users must be forwarded by an AC, which is not efficient and increases burdens on the AC.
Direct forwarding	Data packets from wireless users are directly forwarded without passing through an AC, which is efficient and reduces burdens on the AC.	Data packets from wireless users cannot be centrally managed.

More information: https://forum.huawei.com/enterprise/en/From-Beginner-to-Expert-WLAN-Common-Terms-Section-19-Direct-Forwarding-and-Tunnel-Forwarding/thread/532813-869

yogijain · Created Jun 29, 2019 09:44:35

What are advantages and disadvantages of direct forwarding and tunnel forwarding

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Direct forwarding: Packets do not need to be encapsulated and decapsulated. Therefore, the forwarding efficiency is high, and it is easy for network administrators to locate faults. However, user packets may be intercepted during transmission, threatening information security. In addition, packets of service VLANs need to be transparently transmitted, which increases maintenance workload on the Layer 2 network between ACs and APs.

Tunnel forwarding: Packets are encrypted using the Datagram Transport Layer Security (DTLS) protocol, which prevents attackers from intercepting packets transmitted on the network. Therefore, tunnel forwarding has a high security. The configuration is also simple because only packets of the management VLAN need to be transparently transmitted between APs and ACs. However, encrypted packets make fault location difficult. Moreover, the forwarding efficiency is lower than that in direct forwarding because data packets must be encapsulated with a CAPWAP header.

What are the advantages and disadvantages of direct forward and tunnel forward?

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What are advantages and disadvantages of direct forwarding and tunnel forwarding

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What are the advantages and disadvantages of direct forward and tunnel forward?

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What are advantages and disadvantages of direct forwarding and tunnel forwarding

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