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As mentioned in the topic. I use VPP's stable version 19.08 and do some config like this: 1. I create a bond interface and set bond mode as “active-backup”； 2. I add two phy port in bond as bond’s slavies; 3. I set all of the three interface up; after do these configures, I run " *show bond details* "： vpp# show bond details BondEthernet0 mode: active-backup load balance: active-backup number of active slaves: 2 *TenGigabitEthernet3b/0/1* *TenGigabitEthernet3b/0/0* number of slaves: 2 TenGigabitEthernet3b/0/0 TenGigabitEthernet3b/0/1 device instance: 0 interface id: 0 sw_if_index: 3 hw_if_index: 3 We know that, BondEthernet0's two slaves： TenGigabitEthernet3b/0/1 --- active TenGigabitEthernet3b/0/0 --- passive When I use “trace add dpdk-input 100、show trace” to see how packets be processed. I see the packets which input frome TenGigabitEthernet3b/0/0(passive) still processed by vpp(such as "l2_learn"). Shouldn't these packets just be droped on bond-input graph node? I met this problem: ___ TenGigabitEthernet3b/0/1(active) ---------------| port a of switch A port c of switch A | BondEthernet0---/ | | \___ TenGigabitEthernet3b/0/0(passive) ---------------| port b of switch A port d of switch A | When a arp request out-put from TenGigabitEthernet3b/0/1(active) and in-put in "port a of switch A", it will flood to "port b/c/d of switch A"。 "Port b of switch A" will send it back to TenGigabitEthernet3b/0/0(passive) , then to BondEthernet0。If bond-input do not drop this packet, loopback happen!(MAC address flapping ) In my test, when arp loopback from bond's passive slave interface, MAC address flapping happen! So are the packets come from TenGigabitEthernet3b/0/0(passive) should be dropped ? or What wrong config did I did? ro .... Please tell me, thanks! Thanks!
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