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Questions tagged [proxy-arp]

For questions about Proxy ARP, where it is a technique by which a device on a given network answers the ARP queries for an IP address that is not on that network. For instance, you are troubleshooting a case where your router uses huge amounts of CPU on ARP requests, that might be caused by proxy ARP.

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Why ARP need ARP cross LAN request?

Why ARP need ARP cross LAN request? When I am reading a document: You see the host A(10.1.0.1/8) send ARP Request for 20.2.0.1/8's MAC address. In general, the ARP request is for MAC address in the ...
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The need of proxy ARP on the next-hop router

I'm watching a video course provided by Cisco, and I came across one interesting part regarding the need of proxy ARP: If a router uses a static route that uses an outgoing interface instead of a ...
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arp or proxy-arp causing high cpu

We have an issue on a Cisco A901-6CZ-F-A with high cpu caused by Arp requests coming on Vlan11 from our customer. We enabled 'debug arp' to try and diagnose, below is a small snippet. IP addresses ...
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ARP requests and multiple interfaces

Suppose a device has both ethernet and wireless interfaces enabled and active. Is it correct that ARP requests from one (e.g., ethernet) cannot reach the other (e.g., wireless) unless a Proxy ARP is ...
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PFsense - Reach via NAT and Proxy ARP destination behind the same firewall without the system knowing the RFC1918-IP

I'm a little bit confused and pretty sure it won't work. But a mate and me are arguing for so long now, I decided to ask you. Imagine a PFSense Firewall with 3 Interfaces. 2 different LAN-Interfaces ...
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Juniper SRX-240. Single Address Translation

Edit Feb 4 The issue remains relevant, any help appreciated. Once again, I'm not a network engineer, so this must be a noob question. Simple task: I have a server in my private network and I need to ...
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Inter-VLAN Routing and Proxy Arp

the network above shown has PC1(10.10.10.1) AND PC2(10.10.10.2) IN VLAN 10 10.10.10.0/24 AND PC3(20.20.20.3) and PC4(20.20.20.4) in VLAN 20 20.20.20.0/24 I have configured all the configuration ...
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Difference between proxy arp and default gateway

Firstly what I understand, Default Gateway--> When we set the default gateway in PC the network layer check the destination IP address and if it is not on same broadcast domain as the source IP ...