In an scenario like the one described, since ISG is working as DHCP relay, the releasing of the IP address will have to be initiated by the client dy sending a DHCP release. ISG cannot do anything on it's own to trigger the release.
When the subscriber powers off the PC, does the PC DHCP client sends a DHCP release? If so, is the DHCP release relayed by ISG to the DHCP server? If the client doesn't send the release, then, as explained, I'm affraid there is not much ISG can do about it. You will have to handle that using the lease timer.
policy-map type service KEEP keepalive attempts 2 protocol ARP ! policy-map type control TESTRAD class type control always event session-start 5 service-policy type service name KEEP 20 authorize aaa list ISG-AUTHOR identifier circuit-id
It's up to you to apply good keepalive parameters, but in a nutshell it does send ARP or ICMP keepalive in case of idle link. If there is no answer from client CPE, then the session is terminated.
In EVPN A/A + IRB both PE in same EVI have BVI playing a default GW role. Its not supported to have BVI to be shutdown on one of PEs, In this case if if traffic hit this PE with DMAc equal to BVI Custom MAC, then it will drop this traffic du...
Crosswork Cloud - Crosswork Traffic Analysis - FAQ
Crosswork Cloud - Crosswork Traffic Analysis is a Cloud-hosted Software as a Service platform that provides Netflow based Traffic Analytics. The Crosswork Traffic Analysis platform Traffic Analysis, Peeri...
Cisco Champion Radio · S8|E9 Innovations to Achieve a Trustworthy Infrastructure
How do you know for certain that a router in your network has not been altered with since you deployed it? Wouldn’t it be great if you can cryptographically challenge your r...
IOS upgrade on asr9xx mandates rommon upgrades sometimes while they can be optional at other times. You may land up in unwanted situation if proper procedure is not followed during upgrades.
This article will include complete details about rommon ...
In some situation NCS560 RP become unresponsive after reload or powercycle.
In many NCS560 deployments are in remote location, deployment might be large and human intervention should be kept at minimum
Engineering team have been working on a str...