Ez izgalmas téma. BGP AS_Path list-nél jött elő bővebben.
Ezek a regexek vannak:
http://www.cisco.com/en/US/docs/ios/12_2/termserv/configuration/guide/tcfaapre_ps1835_TSD_Products_Configuration_Guide_Chapter.html#wp1023226
Table 25 Cisco Regular Expression Characters
|
Regular Expression Character
|
Function
|
Examples
|
| . |
Matches any single character. |
0.0 matches 0x0 and 020t..t matches strings such as test, text, and tart |
|
Matches the character following the backslash. Also matches (escapes) special characters. |
172.1.. matches 172.1.10.10 but not 172.12.0.0. allows a period to be matched as a period |
| [ ] |
Matches the characters or a range of characters separated by a hyphen, within left and right square brackets. |
[02468a-z] matches 0, 4, and w, but not 1, 9, or K |
| ^ |
Matches the character or null string at the beginning of an input string. |
^123 matches 1234, but not 01234 |
| ? |
Matches zero or one occurrence of the pattern. (Precede the question mark with Ctrl-V sequence to prevent it from being interpreted as a help command.) |
ba?b matches bb and bab |
| $ |
Matches the character or null string at the end of an input string. |
123$ matches 0123, but not 1234 |
| * |
Matches zero or more sequences of the character preceding the asterisk. Also acts as a wildcard for matching any number of characters. |
5* matches any occurrence of the number 5 including none18..* matches the characters 18. and any characters that follow 18. |
| + |
Matches one or more sequences of the character preceding the plus sign. |
8+ requires there to be at least one number 8 in the string to be matched |
| () [] |
Nest characters for matching. Separate endpoints of a range with a dash (-). |
(17)* matches any number of the two-character string 17([A-Za-z][0-9])+ matches one or more instances of letter-digit pairs: b8 and W4, as examples |
| | |
Concatenates constructs. Matches one of the characters or character patterns on either side of the vertical bar. |
A(B|C)D matches ABD and ACD, but not AD, ABCD, ABBD, or ACCD |
| _ |
Replaces a long regular expression list by matching a comma (,), left brace ({), right brace (}), the beginning of the input string, the end of the input string, or a space. |
The characters _1300_ can match any of the following strings:^1300$
^1300space
space1300
{1300,
,1300,
{1300}
,1300, |
Feldobtam egy full egyszerű topológiát, hogy játsszak vele picit.
R2-n játszom.
Mutassa meg 2.2.2.2 ip-jű interface-t.
R2#show ip interface brief | include 2.2.2.2
Loopback1 2.2.2.2 YES manual up up
Mutassa a 22.22.22.22 IP című interface-t.
R2#show ip interface brief | include 22.22.22.22
Loopback2 22.22.22.22 YES manual up up
hostname-mel kezdődő sorok a running-configban:
R2#sh run | i ^hostname
hostname R2
Pontosan a 2.2.2.2 IP-jű interface:
R2#sh ip int brief | i _2.2.2.2_
Loopback1 2.2.2.2 YES manual up up
Pontosan a 2.2.2.2 interface
R2#sh ip int b | i _2.2.2.2_
Loopback1 2.2.2.2 YES manual up up
Csak Fa0/0 és Fa0/1 interface-k:
R2#sh ip int b | i _FastEthernet0/[0-1]
FastEthernet0/0 10.0.12.2 YES manual up up
FastEthernet0/1 unassigned YES unset administratively down down
Csak Fa0/0
R2#sh ip int b | i _FastEthernet0/[0]
FastEthernet0/0 10.0.12.2 YES manual up up
A kombinációk végtelenek, jó szórakozást!
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