2013年12月5日星期四

ASA - 3750 Trunk not able to ping gateway

I have the following configs on the ASA and WS-C3750X-24P-S switch: The issue is that I added the vlan
1533 (i.e switchport trunk allowed vlan add 1533) to the trunkport and cant ping the ip
address of the ASA for that vlan (i.e. ping 172.15.33.1). I have icmp enabled on the firewall and can also ping the 172.16.33.1 address. What am i overlooking to allow me to ping the
ASA gateway address from the switch. I tried an extended ping as well but unsuccessful.


Cisco ASA 5510 CONFIG

interface e0/1
decription Trunks to Inside Network
no nameif
no security level
no ip address
!
interface e0/1.1533
vlan 1533
ip address 172.15.33.1 255.255.255.0
nameif Tester-Valn
security-level 100
!
interface e0/1.1633
vlan 1633
ip address 172.16.33.1 255.255.255.0
nameif Development Vlan
security-level 100

!!!!!!Other vlans omitted for simplicity!!!!!


SWITCH CONFIG

interface GigabitEthernet1/0/47
 description Trunk to Firewall Port E0/1 INSIDE
 switchport trunk encapsulation dot1q
 switchport trunk allowed vlan 1, 200-210,1533,1633
 switchport mode trunk
!
interface vlan 1533
 ip address 172.15.33.3 255.255.255.0
 no ip route-cache cef
 no ip route-cache
!
interface vlan 1633
 ip address 172.16.33.3 255.255.255.0
 no ip route-cache cef
 no ip route-cache

If your switch has the proper gateway, then 1 possibility is eliminated.

It looks though that you may have WS-C3750X-24P-L  issues. Just so you know, routes may exist in your configuration in the Asa that may not show in the table when you show route


1st, let's trace the path from the switch to see where it is going
traceroute 172.15.33.1


Also on the switch, do
show route
Show ip protocols

If no routing protocols exist, make sure to turn "ip routing" on and configure static route

On the firewall
Show route
Show run route


Do these above for now and we'll go from there

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