I
have a Cisco 2821 with 2x HWIC-1T . Two of the ports on the first module
(range 0/0/1-2) are access ports, with one vlan each. The vlans has ips
configured in /30 nets, where the other usable address are ebgp neighbours. The
port Im trying to use for management is on module number 2 (0/1/3).
Seems
to me it's identical hwics, see output of 'show inventory'.
So
port 0/1/3 has vlan 999, and vlan 999 is configured with address 10.1.0.132/25.
I configured 0/1/2 as vlan 999 too, connected a laptop and it can ping through
the router to the switch connected on 01/3 - but not other device can reach the
routers ip 10.1.0.132, and the router cant reach any of the devices on
10.1.0.128/25.
To
sumarize the problem: I can ping the other hosts in vlan 100 and vlan 101, but
not the other hosts in vlan 999.
It's
connected like this:
<laptop>
<router>
<switch_with_vlan999>
<other_devices_on_vlan999>
#
show version
NAME:
"2821 chassis", DESCR: "2821 chassis"
PID:
CISCO2821 , VID: V05 , SN:
FCZ123456
NAME:
"4 Port FE Switch on Slot 0 SubSlot 0", DESCR: "4 Port FE
Switch"
PID:
HWIC-4ESW , VID: V01 , SN:
FOC123456
NAME:
"4 Port FE Switch on Slot 0 SubSlot 1", DESCR: "4 Port FE
Switch"
PID:
HWIC-4ESW , VID: V01 , SN:
FOC123456
#
show run
interface
FastEthernet0/0/0
description
a specific IX
switchport
access vlan 101
no
cdp enableinterface FastEthernet0/0/1
description
specific ISP
switchport
access vlan 100
no
cdp enable
interface
FastEthernet0/1/3
description
network management
switchport
access vlan 999
!
interface
Vlan100
description
specific isp
ip
address 1.2.3.150 255.255.255.252
no
ip proxy-arp
!
interface
Vlan101
description
some IX
ip
address 2.3.4.70 255.255.255.192
no
ip proxy-arp
interface
Vlan999
ip
address 10.1.0.132 255.255.255.128
no
ip proxy-arp
!
#
show ip interface brief
FastEthernet0/0/0 unassigned YES unset
up up
FastEthernet0/0/1 unassigned YES unset
up up
FastEthernet0/1/3 unassigned YES unset
up up
Vlan1 unassigned YES NVRAM
up down
Vlan100 1.2.3.150 YES NVRAM
up up
Vlan101 2.3.4.70 YES NVRAM
up up
Vlan999 10.1.0.132 YES manual up up <- does manual mean "not yet saved
to startup-config", or is it an indicator of a difference between hwic 1
and hwic 2?
And
now while investigating, I suddently found a third mac address on the router:
0017.0e8d.3c0d
Dynamic 999 FastEthernet0/1/3
0023.4719.a920
Dynamic 999 FastEthernet0/1/3
f062.8195.f100
Dynamic 999 FastEthernet0/1/3
#
show arp
Internet 10.1.0.143 0 0017.0e8d.3c00 ARPA
Vlan999
But
not vice versa:
Internet 10.1.0.132 0 Incomplete ARPA
The
new WS-X45-SUP7L-E mac addresses correspond to a HP procurve gears , is it normal?
