Hello,
i have a question regarding the PRP+ :
portion from the following statement is confusing from the cisco 300-115 official ccnp guilde :
Sometimes the redundancy mode terminology can be confusing. In addition to the RPR, RPR+, and SSO terms, you might see single-router mode (SRM) and dual-router mode (DRM).
SRM simply means that two route processors (integrated into the supervisors) are being used, but only one of them is active at any time. In DRM, two route processors are active at all times. HSRP usually is used to provide redundancy in DRM.
Although RPR and RPR+ have only one active supervisor, the route processor portion is not initialized on the standby unit. Therefore, SRM is not compatible with RPR or RPR+.
SRM is inherent with SSO, which brings up the standby route processor. You usually will find the two redundancy terms together, as “SRM with SSO.”
the things that confusing is that it list that SRM is not compatible with RPR+ , but SRM is "SRM simply means that two route processors (integrated into the supervisors) are being used, but only one of them is active at any time"
and from graph initiation at each type of Redundant Switch Supervisors , there is indication of each module/component/function/procces stage of the redundent supervisor that is attached as file to that tread :
i can see there that RPR+ is initialized Route engine , is it not an route processor or an component of it ? :
if not what is route engine ?
if it does related then why is RPR+ is not an SRM ?
Thanks.
