請問以下設定是說明什麼

crypto pki trustpoint TP-self-signed-3974673920
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3974673920
revocation-check none
rsakeypair TP-self-signed-3974673920
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crypto pki certificate chain TP-self-signed-3974673920
certificate self-signed 01
3082023B 308201A4 A0030201 02020101 300D0609 2A864886 F70D0101 04050030
31312F30 2D060355 04031326 494F532D 53656C66 2D536967 6E65642D 43657274
69666963 6174652D 33393734 36373339 3230301E 170D3933 30333031 30303031
30345A17 0D323030 31303130 30303030 305A3031 312F302D 06035504 03132649
4F532D53 656C662D 5369676E 65642D43 65727469 66696361 74652D33 39373436
37333932 3030819F 300D0609 2A864886 F70D0101 01050003 818D0030 81890281
8100BCC1 C0033EFE E0D34A5C 0D6CAC8E 97C3DFAC 218BB9B6 BE8E39CB 18723B88
758FDE7E C1612AC8 916239FA D5C3B7FE CC497993 050227EA 7395E8C8 79FF255E
53D00E32 5950393B D6DD0DFF E54612EB 4311BCA3 C61EB5CE F1444273 A5E12AA9
867F9889 996B9491 80FD3C9C E5F9C5A3 90745492 B1A9E2B2 8D85F830 131B45B5
77AB0203 010001A3 63306130 0F060355 1D130101 FF040530 030101FF 300E0603
551D1104 07300582 0341332E 301F0603 551D2304 18301680 14D65A7A 2781046F
F212E808 535C7989 0A97F4D1 19301D06 03551D0E 04160414 D65A7A27 81046FF2
12E80853 5C79890A 97F4D119 300D0609 2A864886 F70D0101 04050003 81810078
47E90DB1 62C1A2CD 27DF8A0D F374BDCA 5F61155C 46B05797 3EEF6860 D29517E4
C3A1D210 AD9A46FB 00D8BD5D C1E9E45C ACECE40B C960E6E8 50272648 453BF86D
DEEE9939 8369D9BC 1889F105 9FFB1E09 194FEFC5 6A563E16 80BC2E55 9DA95B5D
629AFFEF E5601FF0 8A37DA2A 5E7698C0 723D8615 482BA804 F1A0943F 055053
quit
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spanning-tree mode pvst
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id