3 title: "VPP Forwarding Modes"
9 VPP is tested in a number of L2, IPv4 and IPv6 packet lookup and
10 forwarding modes. Within each mode baseline and scale tests are
11 executed, the latter with varying number of FIB entries.
13 ## L2 Ethernet Switching
15 VPP is tested in three L2 forwarding modes:
17 - *l2patch*: L2 patch, the fastest point-to-point L2 path that loops
18 packets between two interfaces without any Ethernet frame checks or
20 - *l2xc*: L2 cross-connect, point-to-point L2 path with all Ethernet
21 frame checks, but no MAC learning and no MAC lookup.
22 - *l2bd*: L2 bridge-domain, multipoint-to-multipoint L2 path with all
23 Ethernet frame checks, with MAC learning (unless static MACs are used)
26 l2bd tests are executed in baseline and scale configurations:
28 - *l2bdbase*: Two MAC FIB entries are learned by VPP to enable packet
29 switching between two interfaces in two directions. VPP L2 switching
30 is tested with 254 IPv4 unique flows per direction, varying IPv4
31 source address per flow in order to invoke RSS based packet
32 distribution across VPP workers. The same source and destination MAC
33 address is used for all flows per direction. IPv4 source address is
34 incremented for every packet.
36 - *l2bdscale*: A high number of MAC FIB entries are learned by VPP to
37 enable packet switching between two interfaces in two directions.
38 Tested MAC FIB sizes include: i) 10k with 5k unique flows per
39 direction, ii) 100k with 2 x 50k flows and iii) 1M with 2 x 500k
40 flows. Unique flows are created by using distinct source and
41 destination MAC addresses that are changed for every packet using
42 incremental ordering, making VPP learn (or refresh) distinct src MAC
43 entries and look up distinct dst MAC entries for every packet. For
45 [Packet Flow Ordering]({{< ref "packet_flow_ordering#Packet Flow Ordering" >}}).
47 Ethernet wire encapsulations tested include: untagged, dot1q, dot1ad.
51 IPv4 routing tests are executed in baseline and scale configurations:
53 - *ip4base*: Two /32 IPv4 FIB entries are configured in VPP to enable
54 packet routing between two interfaces in two directions. VPP routing
55 is tested with 253 IPv4 unique flows per direction, varying IPv4
56 source address per flow in order to invoke RSS based packet
57 distribution across VPP workers. IPv4 source address is incremented
60 - *ip4scale*: A high number of /32 IPv4 FIB entries are configured in
61 VPP. Tested IPv4 FIB sizes include: i) 20k with 10k unique flows per
62 direction, ii) 200k with 2 * 100k flows and iii) 2M with 2 * 1M
63 flows. Unique flows are created by using distinct IPv4 destination
64 addresses that are changed for every packet, using incremental or
65 random ordering. For details, see
66 [Packet Flow Ordering]({{< ref "packet_flow_ordering#Packet Flow Ordering" >}}).
70 Similarly to IPv4, IPv6 routing tests are executed in baseline and scale
73 - *ip6base*: Two /128 IPv4 FIB entries are configured in VPP to enable
74 packet routing between two interfaces in two directions. VPP routing
75 is tested with 253 IPv6 unique flows per direction, varying IPv6
76 source address per flow in order to invoke RSS based packet
77 distribution across VPP workers. IPv6 source address is incremented
80 - *ip4scale*: A high number of /128 IPv6 FIB entries are configured in
81 VPP. Tested IPv6 FIB sizes include: i) 20k with 10k unique flows per
82 direction, ii) 200k with 2 * 100k flows and iii) 2M with 2 * 1M
83 flows. Unique flows are created by using distinct IPv6 destination
84 addresses that are changed for every packet, using incremental or
85 random ordering. For details, see
86 [Packet Flow Ordering]({{< ref "packet_flow_ordering#Packet Flow Ordering" >}}).
90 SRv6 routing tests are executed in a number of baseline configurations,
91 in each case SR policy and steering policy are configured for one
92 direction and one (or two) SR behaviours (functions) in the other
95 - *srv6enc1sid*: One SID (no SRH present), one SR function - End.
96 - *srv6enc2sids*: Two SIDs (SRH present), two SR functions - End and
98 - *srv6enc2sids-nodecaps*: Two SIDs (SRH present) without decapsulation,
99 one SR function - End.
100 - *srv6proxy-dyn*: Dynamic SRv6 proxy, one SR function - End.AD.
101 - *srv6proxy-masq*: Masquerading SRv6 proxy, one SR function - End.AM.
102 - *srv6proxy-stat*: Static SRv6 proxy, one SR function - End.AS.
104 In all listed cases low number of IPv6 flows (253 per direction) is