Configuring ASA to allow ping

Just add ICMP to default inspection class:

ASA(config)#policy-map global_policy
ASA(config-pmap)#class inspection_default
ASA(config-pmap-c)#inspect icmp

ASA trunk interface configuration

Switch side
Switch(config)#int fa0/9
Swtich(config-if)#switchport
Swtich(config-if)#switchport trunk encapsulation dot1q
Swtich(config-if)#switch trunk allowed vlan 100,101 (if not specified, every vlan  will send to ASA)
Swtich(config-if)#swtichport mode trunk (ASA cannot negotiate trunk using dynamic protocol)
Swtich(config-if)#no shut

ASA side
NOTE: Each physical interface of ASA carry one or more sub interfaces, each carries one vlan

ASA(config)# int e0/3
ASA(config-if)# no shut
ASA(config)# int e0/3.1
ASA(config-subif)# vlan 100 ; specifies which vlan carried over this sub interface
ASA(config-subif)# nameif inside
ASA(config-subif)# ip address 10.1.1.1 255.255.255.0
ASA(config)# int e0/3.2
ASA(config-subif)# vlan 101
ASA(config-subif)# nameif building1
ASA(config-subif)# security-level 50
ASA(config-subif)# ip address 10.2.1.1 255.255.255.0
ASA(config-subif)# no shut

Trunk interface on firewall module
cat6500#show vlan : to see vlan inside switch
cat6500#show module : to see connected module number
cat6500#config t
cat6500(config)#firewall vlan-group 1 10,100 ;says which vlan should send to firewall module, vlan group number can be anything.
cat6500(config)#firewall module 3 vlan-group 1 ; to which firewall module to send these to

Cat6500#session slot 3 processor 1
FWSM> enable
FWSM# config term
FWSM(config)#interface vlan 10
FWSM(config-if)#nameif outside
FWSM(config-if)# ip address 192.168.10.1 255.255.255.0
FWSM(config-if)#no shut
FWSM(config-if)#exit

FWSM(config)# int valn 100
FWSM(config-if)#namif inside
FWSM(config-if)#ip address 172.30.10.1 255.255.255.0
FWSM(config-if)#no shut
FWSM#show int

ASA Redundant Interface

ciscoasa(config)# int redundant 1
ciscoasa(config-if)# member-interface ethernet 0/0
ciscoasa(config-if)# member-interface ethernet 0/1
ciscoasa(config-if)# nameif outside
ciscoasa(config-if)# ip address 10.10.10.1 255.255.255.0
ciscoasa# show interface redundant 1 : to check both are operational
at the bottom we can see redundancy information
show interface :- we can see which one is active
show interface | include (Interface|member)
NOTE: if primary interface came up it will not switch back until the current one fails