topic Re: Inter VLAN Routing with ASA 5520 and Cat 2960 in Network Security

Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Mon, 11 Mar 2019 18:16:44 GMT

Hi there,

I am a complete novice at networking, but I was tasked to have an ASA 5520 do inter VLAN routing (since my shop doesn't have a layer 3 router).

As a basic setup, I am trying to have three workstations on three different VLANs communicate with each other. The attached screenshot shows the topology.

I am unable to ping from a PC to the ASA...therefore I can't ping to other VLANs. Any assistance would be greatly appreciated.

ROUTER CONFIG:

ciscoasa#
ciscoasa# show run
: Saved
:
ASA Version 8.3(1)
!
hostname ciscoasa
domain-name null
enable password ###### encrypted
passwd ###### encrypted
names
dns-guard
!
interface GigabitEthernet0/0
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/1
no nameif
security-level 100
ip address 10.10.1.1 255.255.255.0
!
interface GigabitEthernet0/1.10
vlan 10
nameif vlan10
security-level 100
ip address 10.10.10.1 255.255.255.0
!
interface GigabitEthernet0/1.20
vlan 20
nameif vlan20
security-level 100
ip address 10.10.20.1 255.255.255.0
!
interface GigabitEthernet0/1.30
vlan 30
nameif vlan30
security-level 100
ip address 10.10.30.1 255.255.255.0
!
interface GigabitEthernet0/2
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/3
shutdown
no nameif
no security-level
no ip address
!
interface Management0/0
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
management-only
!
boot system disk0:/asa831-k8.bin
ftp mode passive
dns server-group DefaultDNS
domain-name null
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
access-list global_access extended permit icmp any any
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu vlan10 1500
mtu vlan20 1500
mtu vlan30 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
icmp permit any inside
asdm image disk0:/asdm-631.bin
no asdm history enable
arp timeout 14400
access-group global_access global
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet timeout 5
ssh timeout 5
console timeout 0
management-access inside
dhcpd address 192.168.1.2-192.168.1.5 inside
dhcpd enable inside
!
dhcpd address 10.10.10.101-10.10.10.253 vlan10
dhcpd enable vlan10
!
dhcpd address 10.10.20.101-10.10.20.253 vlan20
dhcpd enable vlan20
!
dhcpd address 10.10.30.101-10.10.30.253 vlan30
dhcpd enable vlan30
!
threat-detection basic-threat
threat-detection statistics host
threat-detection statistics port
threat-detection statistics protocol
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns migrated_dns_map_1
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns migrated_dns_map_1
inspect ftp
inspect h323 h225
inspect h323 ras
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
inspect ip-options
!
service-policy global_policy global
prompt hostname context
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DD
CEService
destination address email callhome@cisco.com
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
Cryptochecksum:4ad1bba72f1f51b2a47e8cacb9d3606a
: end

SWITCH CONFIG

Switch#show run
Building configuration...

Current configuration : 2543 bytes
!
version 12.2
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Switch
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
system mtu routing 1500
ip subnet-zero
!
!
!
!
!
!
!
!
!
!
spanning-tree mode pvst
spanning-tree extend system-id
no spanning-tree vlan 1
!
vlan internal allocation policy ascending
!
!
!
interface GigabitEthernet0/1
description Port Configured As Trunk
switchport trunk allowed vlan 1,10,20,30,1002-1005
switchport mode trunk
!
interface GigabitEthernet0/2
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet0/3
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet0/4
switchport access vlan 30
switchport mode access
!
interface GigabitEthernet0/5
!
interface GigabitEthernet0/6
!
interface GigabitEthernet0/7
!
interface GigabitEthernet0/8
!
interface GigabitEthernet0/9
!
interface GigabitEthernet0/10
!
interface GigabitEthernet0/11
!
interface GigabitEthernet0/12
!
interface GigabitEthernet0/13
!
interface GigabitEthernet0/14
!
interface GigabitEthernet0/15
!
interface GigabitEthernet0/16
!
interface GigabitEthernet0/17
!
interface GigabitEthernet0/18
!
interface GigabitEthernet0/19
!
interface GigabitEthernet0/20
!
interface GigabitEthernet0/21
!
interface GigabitEthernet0/22
!
interface GigabitEthernet0/23
!
interface GigabitEthernet0/24
!
interface GigabitEthernet0/25
!
interface GigabitEthernet0/26
!
interface GigabitEthernet0/27
!
interface GigabitEthernet0/28
!
interface GigabitEthernet0/29
!
interface GigabitEthernet0/30
!
interface GigabitEthernet0/31
!
interface GigabitEthernet0/32
!
interface GigabitEthernet0/33
!
interface GigabitEthernet0/34
!
interface GigabitEthernet0/35
!
interface GigabitEthernet0/36
!
interface GigabitEthernet0/37
!
interface GigabitEthernet0/38
!
interface GigabitEthernet0/39
!
interface GigabitEthernet0/40
!
interface GigabitEthernet0/41
!
interface GigabitEthernet0/42
!
interface GigabitEthernet0/43
!
interface GigabitEthernet0/44
!
interface GigabitEthernet0/45
!
interface GigabitEthernet0/46
!
interface GigabitEthernet0/47
!
interface GigabitEthernet0/48
!
interface Vlan1
ip address 10.10.1.2 255.255.255.0
no ip route-cache
!
interface Vlan10
no ip address
no ip route-cache
!
interface Vlan20
no ip address
no ip route-cache
!
interface Vlan30
no ip address
no ip route-cache
!
ip default-gateway 10.10.1.1
ip http server
ip http secure-server
!
control-plane
!
!
line con 0
line vty 5 15
!
end

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

andrew.prince — Tue, 27 Jul 2010 15:38:27 GMT

post the output from the switch of:-

show int GigabitEthernet0/1 trunk

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 15:41:03 GMT

Switch#show int gi0/1 trunk

Port Mode Encapsulation Status Native vlan
Gi0/1 on 802.1q trunking 1

Port Vlans allowed on trunk
Gi0/1 1,10,20,30,1002-1005

Port Vlans allowed and active in management domain
Gi0/1 1,10,20,30

Port Vlans in spanning tree forwarding state and not pruned
Gi0/1 1,10,20,30

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

andrew.prince — Tue, 27 Jul 2010 15:49:01 GMT

post the output from the switch of:-

show vlan

show interface status (capture the first 10 interfaces)

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 15:52:06 GMT

Thanks for helping, by the way...

Switch#show vlan

VLAN Name                             Status    Ports
---- -------------------------------- --------- -------------------------------
1    default                          active    Gi0/5, Gi0/6, Gi0/7, Gi0/8
                                                Gi0/9, Gi0/10, Gi0/11, Gi0/12
                                                Gi0/13, Gi0/14, Gi0/15, Gi0/16
                                                Gi0/17, Gi0/18, Gi0/19, Gi0/20
                                                Gi0/21, Gi0/22, Gi0/23, Gi0/24
                                                Gi0/25, Gi0/26, Gi0/27, Gi0/28
                                                Gi0/29, Gi0/30, Gi0/31, Gi0/32
                                                Gi0/33, Gi0/34, Gi0/35, Gi0/36
                                                Gi0/37, Gi0/38, Gi0/39, Gi0/40
                                                Gi0/41, Gi0/42, Gi0/43, Gi0/44
                                                Gi0/45, Gi0/46, Gi0/47, Gi0/48
10   public                           active    Gi0/2
20   atd                              active    Gi0/3
30   VLAN0030                         active    Gi0/4
1002 fddi-default                     act/unsup
1003 token-ring-default               act/unsup
1004 fddinet-default                  act/unsup
1005 trnet-default                    act/unsup

VLAN Type SAID       MTU   Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
---- ----- ---------- ----- ------ ------ -------- ---- -------- ------ ------
1    enet 100001     1500 -      -      -        -    -        0      0
10   enet 100010     1500 -      -      -        -    -        0      0
20   enet 100020     1500 -      -      -        -    -        0      0
30   enet 100030     1500 -      -      -        -    -        0      0
1002 fddi 101002     1500 -      -      -        -    -        0      0
1003 tr    101003     1500 -      -      -        -    -        0      0
1004 fdnet 101004     1500 -      -      -        ieee -        0      0
1005 trnet 101005     1500 -      -      -        ibm -        0      0

Remote SPAN VLANs
------------------------------------------------------------------------------

Primary Secondary Type Ports
------- --------- ----------------- ------------------------------------------

Switch#show int status

Port      Name               Status       Vlan       Duplex Speed Type
Gi0/1     Port Configured As connected    trunk      a-full a-1000 10/100/1000Ba
seTX
Gi0/2                        notconnect   10           auto   auto 10/100/1000Ba
seTX
Gi0/3                        notconnect   20           auto   auto 10/100/1000Ba
seTX
Gi0/4                        notconnect   30           auto   auto 10/100/1000Ba
seTX
Gi0/5                        notconnect   1            auto   auto 10/100/1000Ba
seTX
Gi0/6                        notconnect   1            auto   auto 10/100/1000Ba
seTX
Gi0/7                        notconnect   1            auto   auto 10/100/1000Ba
seTX
Gi0/8                        notconnect   1            auto   auto 10/100/1000Ba
seTX
Gi0/9                        notconnect   1            auto   auto 10/100/1000Ba
seTX
Gi0/10                       notconnect   1            auto   auto 10/100/1000Ba
seTX

When I ran the command, no workstations were plugged in...

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

andrew.prince — Tue, 27 Jul 2010 15:58:20 GMT

Sure - np

OK - looking at the below you have a physical issue, let me explain:-

Switch#show int status

The switch either has nothing connected to the ports, you have 3 x fault cables or the 3 devices are not powered up.

Check your physicals.

HTH>

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 16:12:27 GMT

The reason for that is that I had nothing plugged in at the time I ran the command. When I plug in a workstation, it says "connected" for the status of the port....

Still can't ping 10.10.1.1 from the workstation.

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 16:28:04 GMT

I see you grabbed a show int from the switch, but what about from the ASA?

Can you grab "sh int gi0/1"

What about pinging from the ASA, can you ping the device in vlan10 from the ASA? Before you do, issue this:

capture cap10 interface vlan10

Then ping

then issue:

show cap cap10

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 16:37:48 GMT

No problem...

ciscoasa# show int gi0/1
Interface GigabitEthernet0/1 "", is up, line protocol is up
Hardware is i82546GB rev03, BW 1000 Mbps, DLY 10 usec
        Auto-Duplex(Full-duplex), Auto-Speed(1000 Mbps)
        Input flow control is unsupported, output flow control is unsupported
        Available but not configured via nameif
        MAC address 5475.d0ba.46bb, MTU not set
        IP address 10.10.1.1, subnet mask 255.255.255.0
        4378 packets input, 467527 bytes, 0 no buffer
        Received 2715 broadcasts, 0 runts, 0 giants
        0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
        30 L2 decode drops
        284 packets output, 25672 bytes, 0 underruns
        0 pause output, 0 resume output
        0 output errors, 0 collisions, 2 interface resets
        0 late collisions, 0 deferred
        0 input reset drops, 0 output reset drops, 0 tx hangs
        input queue (blocks free curr/low): hardware (255/253)
        output queue (blocks free curr/low): hardware (255/253)

Instead of vlan10, I have a laptop (10.10.20.101) plugged into the vlan20 port.

ciscoasa# capture cap10 interface vlan20
ciscoasa# ping 10.10.20.101
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.10.20.101, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/10 ms
ciscoasa# show cap cap10

27 packets captured

   1: 16:33:08.777334 802.1Q vlan#20 P0 10.10.20.101.137 > 74.55.74.138.137: ud
p 50
   2: 16:33:09.381541 802.1Q vlan#20 P0 10.10.20.101 > 10.10.20.1: icmp: echo re
quest
   3: 16:33:09.381770 802.1Q vlan#20 P0 10.10.20.1 > 10.10.20.101: icmp: echo re
ply
   4: 16:33:10.271180 802.1Q vlan#20 P0 10.10.20.101.137 > 74.55.74.138.137: ud
p 50
   5: 16:33:10.331159 802.1Q vlan#20 P0 10.10.20.101.10368 > 10.10.20.1.8905: u
dp 105
   6: 16:33:11.771337 802.1Q vlan#20 P0 10.10.20.101.137 > 74.55.74.138.137: ud
p 50
   7: 16:33:14.381816 802.1Q vlan#20 P0 10.10.20.101 > 10.10.20.1: icmp: echo re
quest
   8: 16:33:14.382045 802.1Q vlan#20 P0 10.10.20.1 > 10.10.20.101: icmp: echo re
ply
   9: 16:33:15.331678 802.1Q vlan#20 P0 10.10.20.101.10369 > 10.10.20.1.8905: u
dp 103
10: 16:33:18.466925 802.1Q vlan#20 P0 10.10.20.1 > 10.10.20.101: icmp: echo re
quest

However, when workstation 10.10.20.101 tries to ping the ASA (10.10.1.1), "Destination host unreachable" is the message...

Thanks,

Drew

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 16:44:12 GMT

Well you won't be able to ping that IP address, in fact you shouldn't have an IP address on that interface at all really. Your real testing should pretty much be from host on 1 vlan to the host on the other. You won't be able to ping any IP address on the ASA except the one you are directly behind. So for 10.10.20.101 that means the only pingable ASA IP will be 10.10.20.1

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 17:10:47 GMT

That is good to know. So here are the current symptoms...

I have three laptops plugged in...one in each vlan port.

10.10.10.101 --> Can ping 10.10.20.101, but not 10.10.30.101

10.10.20.101 --> Cannot ping either 10.10.10.101 or 10.10.30.101

10.10.30.101 --> Cannot ping 10.10.10.101, but can ping 10.10.20.101

Each laptop can ping its direct gateway on the ASA.

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 17:16:44 GMT

Hmm, can you double check the default gateway on 10.10.20.101?

also try this...

no cap cap10

capture cap10 interface vlan10

capture cap20 interface vlan20

Then ping from host on vlan10 to host on vlan20

Then get the outputs of "show cap cap10" and "show cap cap20"

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 17:40:10 GMT

ciscoasa# capture cap10 interface vlan10

ciscoasa# capture cap20 interface vlan20

ciscoasa# show cap cap10

97 packets captured

   1: 17:32:32.541262 802.1Q vlan#10 P0 10.10.10.101.2461 > 10.10.10.1.8905: ud
p 96
   2: 17:32:36.741294 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
   3: 17:32:36.741523 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
   4: 17:32:37.539217 802.1Q vlan#10 P0 10.10.10.101.2462 > 10.10.10.1.8905: ud
p 98
   5: 17:32:39.104914 802.1Q vlan#10 P0 10.10.10.101.2463 > 10.12.5.64.8906: ud
p 95
   6: 17:32:41.738914 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
   7: 17:32:41.739143 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
   8: 17:32:42.544023 802.1Q vlan#10 P0 10.10.10.101.2464 > 10.10.10.1.8905: ud
p 93
   9: 17:32:46.747352 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
10: 17:32:46.747580 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
11: 17:32:47.546633 802.1Q vlan#10 P0 10.10.10.101.2465 > 10.10.10.1.8905: ud
p 98
12: 17:32:51.739921 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
13: 17:32:51.740150 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
14: 17:32:52.544100 802.1Q vlan#10 P0 10.10.10.101.2466 > 10.10.10.1.8905: ud
p 98
15: 17:32:56.741859 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
16: 17:32:56.742088 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
17: 17:32:57.547396 802.1Q vlan#10 P0 10.10.10.101.2467 > 10.10.10.1.8905: ud
p 98
18: 17:33:01.742728 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
19: 17:33:01.742957 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
20: 17:33:02.547609 802.1Q vlan#10 P0 10.10.10.101.2468 > 10.10.10.1.8905: ud
p 97
21: 17:33:06.742774 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
22: 17:33:06.743018 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
23: 17:33:07.543337 802.1Q vlan#10 P0 10.10.10.101.2469 > 10.10.10.1.8905: ud
p 93
24: 17:33:10.375514 802.1Q vlan#10 P0 10.10.10.101.137 > 10.10.10.255.137: ud
p 50
25: 17:33:11.114679 802.1Q vlan#10 P0 10.10.10.101.137 > 10.10.10.255.137: ud
p 50
26: 17:33:11.742728 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
27: 17:33:11.742957 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
28: 17:33:11.864731 802.1Q vlan#10 P0 10.10.10.101.137 > 10.10.10.255.137: ud
p 50
29: 17:33:12.546266 802.1Q vlan#10 P0 10.10.10.101.2470 > 10.10.10.1.8905: ud
p 98
30: 17:33:16.746497 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
31: 17:33:16.746726 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
32: 17:33:17.548403 802.1Q vlan#10 P0 10.10.10.101.2471 > 10.10.10.1.8905: ud
p 97
33: 17:33:21.744880 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
34: 17:33:21.745109 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
35: 17:33:22.545351 802.1Q vlan#10 P0 10.10.10.101.2472 > 10.10.10.1.8905: ud
p 95
36: 17:33:23.785558 802.1Q vlan#10 P0 10.10.10.101.137 > 10.10.10.255.137: ud
p 50
37: 17:33:24.522464 802.1Q vlan#10 P0 10.10.10.101.137 > 10.10.10.255.137: ud
p 50
38: 17:33:25.272568 802.1Q vlan#10 P0 10.10.10.101.137 > 10.10.10.255.137: ud
p 50
39: 17:33:26.744926 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
40: 17:33:26.745154 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
41: 17:33:27.548708 802.1Q vlan#10 P0 10.10.10.101.2473 > 10.10.10.1.8905: ud
p 96
42: 17:33:31.749625 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
43: 17:33:31.749854 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
44: 17:33:32.550096 802.1Q vlan#10 P0 10.10.10.101.2474 > 10.10.10.1.8905: ud
p 97
45: 17:33:36.748343 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
46: 17:33:36.748572 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
47: 17:33:37.546251 802.1Q vlan#10 P0 10.10.10.101.2475 > 10.10.10.1.8905: ud
p 95
48: 17:33:41.745566 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
49: 17:33:41.745795 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
50: 17:33:42.547975 802.1Q vlan#10 P0 10.10.10.101.2476 > 10.10.10.1.8905: ud
p 97
51: 17:33:46.747855 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
52: 17:33:46.748084 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
53: 17:33:47.548403 802.1Q vlan#10 P0 10.10.10.101.2477 > 10.10.10.1.8905: ud
p 94
54: 17:33:51.747718 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
55: 17:33:51.747931 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
56: 17:33:52.547670 802.1Q vlan#10 P0 10.10.10.101.2478 > 10.10.10.1.8905: ud
p 97
57: 17:33:54.134239 802.1Q vlan#10 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
58: 17:33:56.750678 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
59: 17:33:56.750891 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
60: 17:33:57.563035 802.1Q vlan#10 P0 10.10.10.101.2479 > 10.10.10.1.8905: ud
p 97
61: 17:33:59.245272 802.1Q vlan#10 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
62: 17:34:01.752188 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
63: 17:34:01.752402 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
64: 17:34:01.995737 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 49
65: 17:34:01.995813 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 34
66: 17:34:01.995950 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 49
67: 17:34:01.996011 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 34
68: 17:34:01.996118 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 49
69: 17:34:01.996179 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 34
70: 17:34:02.551836 802.1Q vlan#10 P0 10.10.10.101.2480 > 10.10.10.1.8905: ud
p 98
71: 17:34:03.011306 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 49
72: 17:34:03.011367 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 34
73: 17:34:03.011443 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 49
74: 17:34:03.011489 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 34
75: 17:34:03.011550 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 49
76: 17:34:03.011596 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 34
77: 17:34:04.027037 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 49
78: 17:34:04.027082 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 34
79: 17:34:04.027174 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 49
80: 17:34:04.027250 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 34
81: 17:34:04.027311 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 49
82: 17:34:04.027357 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 34
83: 17:34:04.745811 802.1Q vlan#10 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
84: 17:34:06.058514 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 49
85: 17:34:06.058605 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.23.427: u
dp 34
86: 17:34:06.058651 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 49
87: 17:34:06.058712 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.16.22.427: u
dp 34
88: 17:34:06.058758 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 49
89: 17:34:06.058819 802.1Q vlan#10 P0 10.10.10.101.2263 > 156.80.200.40.427:
udp 34
90: 17:34:06.750907 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
91: 17:34:06.751151 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
92: 17:34:07.552751 802.1Q vlan#10 P0 10.10.10.101.2481 > 10.10.10.1.8905: ud
p 96
93: 17:34:11.752082 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
94: 17:34:11.752326 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
95: 17:34:12.553392 802.1Q vlan#10 P0 10.10.10.101.2482 > 10.10.10.1.8905: ud
p 96
96: 17:34:16.755438 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
97: 17:34:16.755682 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
98: 17:34:17.554811 802.1Q vlan#10 P0 10.10.10.101.2483 > 10.10.10.1.8905: ud
p 97
99: 17:34:21.751303 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
100: 17:34:21.751563 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
101: 17:34:22.552034 802.1Q vlan#10 P0 10.10.10.101.2484 > 10.10.10.1.8905: ud
p 95
102: 17:34:26.753989 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
103: 17:34:26.754218 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
104: 17:34:27.560334 802.1Q vlan#10 P0 10.10.10.101.2485 > 10.10.10.1.8905: ud
p 98
105: 17:34:31.755499 802.1Q vlan#10 P0 10.10.10.101 > 10.10.10.1: icmp: echo re
quest
106: 17:34:31.755728 802.1Q vlan#10 P0 10.10.10.1 > 10.10.10.101: icmp: echo re
ply
107: 17:34:32.563950 802.1Q vlan#10 P0 10.10.10.101.2486 > 10.10.10.1.8905: ud
p 95
107 packets shown

ciscoasa# show cap cap20

92 packets captured

   1: 17:26:53.653378 802.1Q vlan#20 P0 10.10.20.101.1187 > 216.49.94.13.80: S 8
20343450:820343450(0) win 65535
   2: 17:27:12.019133 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
   3: 17:27:17.214481 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
   4: 17:27:55.593688 802.1Q vlan#20 P0 10.10.20.101.1188 > 216.49.94.13.80: S 1
499891746:1499891746(0) win 65535
   5: 17:27:58.555284 802.1Q vlan#20 P0 10.10.20.101.1188 > 216.49.94.13.80: S 1
499891746:1499891746(0) win 65535
   6: 17:28:04.564790 802.1Q vlan#20 P0 10.10.20.101.1188 > 216.49.94.13.80: S 1
499891746:1499891746(0) win 65535
   7: 17:29:06.504856 802.1Q vlan#20 P0 arp who-has 10.10.20.1 tell 10.10.20.101

8: 17:29:06.504917 802.1Q vlan#20 P0 arp reply 10.10.20.1 is-at 54:75:d0:ba:4
6:bb
9: 17:29:06.505222 802.1Q vlan#20 P0 10.10.20.101.1189 > 216.49.94.13.80: S 4
7080594:47080594(0) win 65535
10: 17:29:09.467032 802.1Q vlan#20 P0 10.10.20.101.1189 > 216.49.94.13.80: S 4
7080594:47080594(0) win 65535
11: 17:29:15.476537 802.1Q vlan#20 P0 10.10.20.101.1189 > 216.49.94.13.80: S 4
7080594:47080594(0) win 65535
12: 17:30:17.417245 802.1Q vlan#20 P0 10.10.20.101.1190 > 216.49.94.13.80: S 1
445997597:1445997597(0) win 65535
13: 17:30:18.156043 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
14: 17:30:20.378688 802.1Q vlan#20 P0 10.10.20.101.1190 > 216.49.94.13.80: S 1
445997597:1445997597(0) win 65535
15: 17:30:23.220356 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
16: 17:30:26.388102 802.1Q vlan#20 P0 10.10.20.101.1190 > 216.49.94.13.80: S 1
445997597:1445997597(0) win 65535
17: 17:30:28.721047 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
18: 17:30:34.222507 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
19: 17:33:43.156928 802.1Q vlan#20 P0 arp who-has 10.10.20.101 tell 10.10.20.1
01
20: 17:33:44.187002 802.1Q vlan#20 P0 arp who-has 10.10.20.1 tell 10.10.20.101

21: 17:33:44.187047 802.1Q vlan#20 P0 arp reply 10.10.20.1 is-at 54:75:d0:ba:4
6:bb
22: 17:33:44.187261 802.1Q vlan#20 P0 10.10.20.101 > 10.10.20.1: icmp: echo re
quest
23: 17:33:44.187520 802.1Q vlan#20 P0 10.10.20.1 > 10.10.20.101: icmp: echo re
ply
24: 17:33:44.239016 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
25: 17:33:44.327360 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.26.53:
udp 34
26: 17:33:44.989740 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
27: 17:33:45.150611 802.1Q vlan#20 P0 10.10.20.101.6646 > 10.10.20.255.6646:
udp 236
28: 17:33:45.331312 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.27.53:
udp 34
29: 17:33:45.740943 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
30: 17:33:46.331892 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.26.53:
udp 34
31: 17:33:46.492131 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
32: 17:33:47.243502 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
33: 17:33:47.994501 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
34: 17:33:48.335050 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.26.53:
udp 34
35: 17:33:48.335141 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.27.53:
udp 34
36: 17:33:48.745658 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
37: 17:33:49.496861 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
38: 17:33:50.248812 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
39: 17:33:50.249300 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
40: 17:33:50.999170 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
41: 17:33:50.999246 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
42: 17:33:51.750342 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
43: 17:33:51.750418 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
44: 17:33:52.341336 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.26.53:
udp 34
45: 17:33:52.341474 802.1Q vlan#20 P0 10.10.20.101.53835 > 208.231.55.27.53:
udp 34
46: 17:33:52.501576 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
47: 17:33:52.501652 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
48: 17:33:53.254183 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 174
49: 17:33:53.254320 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 204
50: 17:33:54.134361 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
51: 17:33:54.755118 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 174
52: 17:33:54.823535 802.1Q vlan#20 P0 10.120.2.198.1261 > 161.69.12.13.443: R
250934743:250934743(0) ack 2427374744 win 0
53: 17:33:54.823901 802.1Q vlan#20 P0 10.120.2.198.1262 > 161.69.12.13.443: R
3313764765:3313764765(0) ack 1397588942 win 0
54: 17:33:54.824618 802.1Q vlan#20 P0 10.10.20.101.1269 > 161.69.12.13.443: S
2860571026:2860571026(0) win 65535
55: 17:33:56.257448 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 174
56: 17:33:57.759833 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 174
57: 17:33:57.779729 802.1Q vlan#20 P0 10.10.20.101.1269 > 161.69.12.13.443: S
2860571026:2860571026(0) win 65535
58: 17:33:59.245394 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
59: 17:33:59.262178 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 186
60: 17:34:00.263780 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 186
61: 17:34:01.265382 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 186
62: 17:34:02.266908 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 186
63: 17:34:03.268540 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
64: 17:34:03.789189 802.1Q vlan#20 P0 10.10.20.101.1269 > 161.69.12.13.443: S
2860571026:2860571026(0) win 65535
65: 17:34:04.019591 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
66: 17:34:04.745933 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo
request
67: 17:34:04.770757 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
68: 17:34:05.521991 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
69: 17:34:06.273209 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
70: 17:34:07.024367 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
71: 17:34:07.775518 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
72: 17:34:08.526706 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 68
73: 17:34:09.277939 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 174
74: 17:34:09.278061 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 174
75: 17:34:09.278702 802.1Q vlan#20 P0 10.10.20.101.138 > 10.10.20.255.138: ud
p 204
76: 17:34:15.810489 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.26.53:
udp 31
77: 17:34:16.809726 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.27.53:
udp 31
78: 17:34:17.811222 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.26.53:
udp 31
79: 17:34:19.814349 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.26.53:
udp 31
80: 17:34:19.814380 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.27.53:
udp 31
81: 17:34:23.820682 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.26.53:
udp 31
82: 17:34:23.820788 802.1Q vlan#20 P0 10.10.20.101.49796 > 208.231.55.27.53:
udp 31
83: 17:34:30.822924 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 50
84: 17:34:31.572892 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 50
85: 17:34:32.324079 802.1Q vlan#20 P0 10.10.20.101.137 > 10.10.20.255.137: ud
p 50
86: 17:34:33.083079 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.26.53:
udp 44
87: 17:34:34.077007 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.27.53:
udp 44
88: 17:34:35.078639 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.26.53:
udp 44
89: 17:34:37.081584 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.26.53:
udp 44
90: 17:34:37.081706 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.27.53:
udp 44
91: 17:34:41.087809 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.26.53:
udp 44
92: 17:34:41.087840 802.1Q vlan#20 P0 10.10.20.101.61089 > 208.231.55.27.53:
udp 44
92 packets shown

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 17:59:39 GMT

I see a few of them go all the way through, but no echo replies from 10.10.20.101

Does this have a windows firewall on?

Can you install wireshark on that PC and see if you are receiving any icmps?

From vlan 10 cap

57: 17:33:54.134239 802.1Q vlan#10 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

61: 17:33:59.245272 802.1Q vlan#10 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

83: 17:34:04.745811 802.1Q vlan#10 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

From vlan 20 cap

2: 17:27:12.019133 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

3: 17:27:17.214481 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

13: 17:30:18.156043 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

15: 17:30:23.220356 802.1Q vlan#20 P0 10.10.10.101 > 10.10.20.101: icmp: echo request

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 18:15:13 GMT

see attached screenshot (from 10.10.20.101 wireshark). i did a ping from 10.10.10.101 to ...20.101 and used wireshark on ...20.101 to do capture.

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 18:23:45 GMT

ICMPs are definitely being received, so it looks like the firewall is sending them through okay.

We see that the PC doing wireshark never responds.

Usually this indicates a firewall on the client, or other client related issue.

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 19:05:22 GMT

August,

Firewalls are disabled on both hosts. It seems to me that the destination host does not know where to send the reply packet to.

I found this in the log.

Jul 27 2010

18:31:56

110002

10.10.10.101

1919

Failed to locate egress interface for UDP from vlan10:10.10.10.101/1919 to 10.12.5.64/8906

But research on the error didn't lead me to anything specific...

Any clue?

-Drew

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 19:15:47 GMT

That seems to be unrelated to the traffic that we are interested in.

What happens when you try the ping the other way, and this time lets get some more specific captures.

access-list capture permit icmp host 10.10.20.101 host 10.10.10.101

access-list capture permit icmp host 10.10.10.101 host 10.10.20.101

no cap cap10

no cap cap20

cap cap10 access-list capture interface vlan10

cap cap20 access-list capture interface vlan20

And try the wireshark again on that PC. And try to ping the other way.

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

dreweharris — Tue, 27 Jul 2010 19:39:20 GMT

note: IP of vlan10 host was 10.10.10.103 for this exercise...

See attachment for wireshark screen capture and see below for captures...

ciscoasa(config)# show cap cap10

4 packets captured

   1: 19:32:54.264085 802.1Q vlan#10 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
   2: 19:32:59.482381 802.1Q vlan#10 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
   3: 19:33:04.490407 802.1Q vlan#10 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
   4: 19:33:09.498249 802.1Q vlan#10 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
4 packets shown

ciscoasa(config)# show cap cap20

4 packets captured

   1: 19:32:54.263963 802.1Q vlan#20 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
   2: 19:32:59.482274 802.1Q vlan#20 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
   3: 19:33:04.490285 802.1Q vlan#20 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
   4: 19:33:09.498127 802.1Q vlan#20 P0 10.10.20.101 > 10.10.10.103: icmp: echo
request
4 packets shown
ciscoasa(config)#

Re: Inter VLAN Routing with ASA 5520 and Cat 2960

August Ritchie — Tue, 27 Jul 2010 19:50:18 GMT

I think the 2960 can have multiple active SVIs, if so can you put an IP address on vlan 20?

interface Vlan20

ip address 10.10.20.X

And then change the default gateway like so?

ip default-gateway 10.10.20.1

From there can you try pinging using the switches IP address instead of the host 10.10.20.101?

Warning*** Changing your default gateway may cause issues with management if you are not directly connected.