"graceful" what is the real meaning?

[Soon Kwan Kwon]

 Hello, I'm Korean engineer.

Reading the data sheet, I found out what is the "graceful" real meaning?..

Acutally, I searched dictionary, and found that it is showing "elegant"...

So, I think "OSPFv3 elegant Restart" is so weird.. (Please see the below picture.)

 Maybe the reason for that I understand like this, is because I don't do well English...ㅠ

Can I understand "elegant restart"...?

or can you explain exactly word that is suitable?

Thanks & Regards,

[Mark Malone]

Hey It means it will rebuild the IGP relationship in the protocol without breaking flow of traffic so not to effect the netwrok

When Graceful Restart is used, peer networking devices are informed, via protocol extensions prior to the event, of the SSO capable routers ability to perform graceful restart. The peer device must have the ability to understand this messaging. When a switchover occurs, the peer will continue to forward to the switching over router as instructed by the GR process for each particular protocol, even though in most cases the peering relationship needs to be rebuilt. Essentially, the peer router will give the switching over router a "grace" period to re-establish the neighbor relationship, while continuing to forward to the routes from that peer. Graceful Restart is available today for OSPF, ISIS, EIGRP, LDP and BGP. Standards are defined for OSPF, ISIS, BGP and LDP to ensure vendor interoperability.

[Soon Kwan Kwon]

Thank you for contacting.

but, as you know, at the right side of the picutre, it is supporting OSPF even though its os is IP Base.

I know IP Base is supporting until EIGRP stub! not OSPF .

I'm so confused actually.

Can you explain it why?

Thank you.

[Mark Malone · Accepted solution]

Hey actually ospf should be supported in ipbase , but theres limitations on it , only 1 process per ipbase license and a maximum of 200 igp routes although engineers have said they have gotten more than that

From Cisco doc

"OSPF for Routed Access: Starting from Cisco IOS Release 12.2(55)SE, the IP Base image supports a new feature called OSPF for Routed Access. OSPF for Routed Access is designed specifically to enable you to extend Layer 3 routing capabilities to the wiring closet. It supports only one OSPFv2 and one OSPFv3 instance, with a maximum number of 200 dynamically learned routes."