Often you have to deal with existing AP/Controller and need to understand what’s configured on it. Of course, you can click 100500 times in the GUI all over the place, or read through 20+ pages of “show run” output (those who’ve been to my WING5 training should remember the little space-bar-thrashing exercise). For instance, the full config dump for the WING5 class is about 21KB ~= 29 pages.
Or you can do this to quickly :
mywing5device>sh run | include ^\\w
and get this:
version 2.1 ip access-list BROADCAST-MULTICAST-CONTROL ip access-list fw-acl-full ip access-list fw-acl-limited ip access-list fw-acl-verylimited mac access-list 12-block-mint mac access-list PERMIT-ARP-AND-IPv4 mac access-list l2-block-mint firewall-policy default firewall-policy lab-fw-wips role-policy lab-rolepol mint-policy global-default wlan-qos-policy default radio-qos-policy default aaa-policy lab-aaapol captive-portal lab-hotspot wlan ADSP-TRG wlan team6-eap wlan team6-hotspot wlan team6-psk1 wlan team6-psk2 smart-rf-policy lab-smartrf wips-policy lab-wips-basic advanced-wips-policy lab-wips-adv auto-provisioning-policy lab-autopolicy radius-group radgroup-fullusers radius-group radgrp-hotspot radius-user-pool-policy lab-radpool radius-server-policy lab-radius dhcp-server-policy ADSPLAB dhcp-server-policy RFS2 management-policy default management-policy lab-mgmt l2tpv3 policy default profile rfs4000 default-rfs4000 profile rfs4000 lab-rfs4000 profile ap71xx lab-7131 profile ap650 default-ap650 profile ap650 lab-ap650 profile ap6521 lab-6521 profile ap621 lab-621 rf-domain default rf-domain lab-rfdomain rfs4000 5C-0E-8B-1B-9B-44 ap650 5C-0E-8B-98-C5-44 ap6521 5C-0E-8B-E8-31-68 ap621 5C-0E-8B-97-C2-48 ap621 5C-0E-8B-97-DA-AA
Now you can see all the configured rf-domains, profiles, policies, ACLs, WLANs, devices etc in a nice quick overview.
Since WiNG5 controller contains the configuration for the entire network this thing can be very helpful – try fishing this out of the full dump when you have several hundred sites and thousands of devices!
<IMHO>Overall, the way the distributed configuration and reporting is implemented in WiNG5, and how many cool shortcuts and features are available for mass management/deployment/troubleshooting, deserves a dedicated series of articles. After I really don’t want to go back to previous generation UIs</IMHO>
So, what really happened?
show run… |include <regexp> only shows lines that include regexp.
The config (i.e. “pure” show run) looks like this (note the indentations):
! <header> <version> ! <section X> <line> <line> .. ! <section Y> <line> <line> .. ! ... ! <end>
Thus, essentially, we need to only show the lines that don’t have space or ‘!’ at the beginning to get all the section names. Alternatively, we could just say, that the line should begin with a letter.
The regexp for “letter” is ‘\w‘. The regexp for “line begins with” is ‘^‘. Thus we get ‘^\w‘ – “begins with a letter“. However, because we’re using a backslash in the CLI, we need to escape it with another backslash, hence ‘^\\w‘. This is it!
P.S. Two pages on text to describe a one-liner… Was there a shorter way? What do you think?