Cisco Bug: CSCup23223 - QinQ - ARP stops working when ARP inspection enable
Nov 27, 2020
- Cisco ME 3400 Series Ethernet Access Switches
Known Affected Releases
Symptom: ARP doesn't work in QinQ setup if ARP inspection is enable. ARP inspection can be enable on any VLAN to trigger the issue, even not related to QinQ. Customer_SW1#sh ip arp Protocol Address Age (min) Hardware Addr Type Interface Internet 220.127.116.11 - 001c.b0ee.c341 ARPA Vlan30 Internet 18.104.22.168 0 Incomplete ARPA Conditions: ARP inspection enabled on ISP switch. The issue was found on ME-3400 switch with 12.2(60)EZ4. Other platforms or IOS releases might also be affected.
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Bug Details Include
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