Hi Stewart, Thank you for pointing that out.
The term circuits in the third column refers to bi-directional links. For the sake of clarity, we propose to replace it with “links” and multiply all values in the third column by 2. It also appears that a glitch occurred when the link/node ratios were reported in this table 1. Below is the updated table. +-------------+------------+------------+------------+------------+ | Network | Nodes | Links |Link-to-Node| SRLG info? | | | | | Ratio | | +-------------+------------+------------+------------+------------+ | T1 | 408 | 1330 | 3.26 | Yes | +-------------+------------+------------+------------+------------+ | T2 | 587 | 2166 | 3.69 | No | +-------------+------------+------------+------------+------------+ | T3 | 93 | 802 | 8.62 | Yes | +-------------+------------+------------+------------+------------+ | T4 | 247 | 786 | 3.18 | Yes | +-------------+------------+------------+------------+------------+ | T5 | 34 | 192 | 5.65 | Yes | +-------------+------------+------------+------------+------------+ | T6 | 50 | 156 | 3.12 | No | +-------------+------------+------------+------------+------------+ | T7 | 82 | 586 | 7.15 | No | +-------------+------------+------------+------------+------------+ | T8 | 35 | 82 | 2.34 | Yes | +-------------+------------+------------+------------+------------+ | T9 | 177 | 2742 | 15.49 | Yes | +-------------+------------+------------+------------+------------+ Regards, Francois On 22/07/2019 12:00, "Stewart Bryant" <[email protected]> wrote: I would like to understand what Table 1 in draft-ietf-rtgwg-segment-routing-ti-lfa is telling us. It uses the terms links and circuits without distinguishing between the two. I could speculate that a circuit is a group of links, but then the ratio of nodes to circuits in T1 seems far too low at less than 1:1 in network T1. Then the node to link ratio sounds quite high with fan outs of 84:1 in T2. Please could you explain what you mean by circuits and links in this table. What I would like to know is the average ratio of nodes to neighbours, and the number of parallel links per neighbour. Best regards Stewart _______________________________________________ rtgwg mailing list [email protected] https://www.ietf.org/mailman/listinfo/rtgwg
