The CNR LEG module requires the use of option 82 sub-option 2 (Relay-Agent-Information Option with the Remote-Id sub-option), which contains the CM-MAC, in all DHCP requests. If option 82 does not exist in a renewal transaction, an attempt to extend the lease based solely on the IP address is performed. This will succeed only if the IP address was previously logged in to the Subscriber Manager (SM) by the LEG, in the event of a full DHCP transaction, or via other interfaces to the SM.
The CNR LEG protects the SM and the connection to the SM from any DHCP Denial of Service (DoS) attacks, which are performed on the CNR. To reduce the login rate to the SM, the LEG ignores identical DHCP requests that are approved by the CNR. The requests are sent to the CNR in short time intervals.
Question We run asr9001 with XR 6.1.3, and we have a very long delay to
login w/ SSH 1 or 2 to the device compare to IOS device. After
investigation, the there is 1s delay between the client KEXDH_INIT and
the server (XR) KEXDH_REPLY. After debug ssh serv...
Introduction The purpose of this document is to demonstrate the Open
Shortest Path First (OSPF) behavior when the V-bit (Virtual-link bit) is
present in a non-backbone area. The V-bit is signaled in Type-1 LSA only
if the router is the endpoint of one or ...
Hi, I am seeing quite a few issues with patch install and wanted to
share my experience and workaround to this. Login to admin via CLI, then
access root with the “shell” command Issue “df –h” and you’ll probably
see the following directory full or nearly ...