From: Barry Rowland (reachbarry@bigfoot.com)
Date: Sun Oct 06 2002 - 09:54:35 GMT-3
Nothing from Cisco yet. Just hope the proctors at the Lab know about
this.
Barry
----- Original Message -----
From: "ying c" <bf5tgh1@yahoo.com>
To: "Barry Rowland" <reachbarry@bigfoot.com>; <swm@emanon.com>;
<ccielab@groupstudy.com>
Sent: Saturday, October 05, 2002 7:32 PM
Subject: Re: Mgmt Interface 3550 in separate vlan REVISITED + clarification
on Native VLAN
> Barry,
>
> Thanks for the help. Is there a fix for this known
> bug? It's what I got:
>
> r4#sh arp
> Protocol Address Age (min) Hardware Addr
> Type Interface
> Internet 148.24.5.10 151 0010.0010.0010
> ARPA Ethernet0
> Internet 148.24.5.5 150 0005.0005.0005
> ARPA Ethernet0
> Internet 148.24.5.4 - 0004.0004.0004
> ARPA Ethernet0
> Internet 148.24.5.100 122 0009.e8fa.9d80
> ARPA Ethernet0
> r5#sh arp
> Protocol Address Age (min) Hardware Addr
> Type Interface
> Internet 148.24.5.10 153 0010.0010.0010
> ARPA Ethernet0
> Internet 148.24.5.5 - 0005.0005.0005
> ARPA Ethernet0
> Internet 148.24.5.4 151 0004.0004.0004
> ARPA Ethernet0
> Internet 148.24.5.100 123 0009.e8fa.9d80
> ARPA Ethernet0
> Cat3550#sh arp
> Protocol Address Age (min) Hardware Addr
> Type Interface
> Internet 148.24.5.10 124 0010.0010.0010
> ARPA Vlan100
> Internet 148.24.5.100 - 0009.e8fa.9d80
> ARPA Vlan100
>
> Thanks,
> Chang
> --- Barry Rowland <reachbarry@bigfoot.com> wrote:
> > Check your arp tables on R4, R5, and the cat after
> > you ping the cat from
> > either
> > router. If you see an arp entry that maps the cats
> > ip to a mac in the
> > routers, but
> > do not see an ip to mac map for the routers on the
> > switch, then you have a
> > known
> > bug for the cat3550 ios image. For some unknown
> > reason the cat replies to
> > the
> > routers with it's ip address, proof of this is in
> > the routers arp table, but
> > does not
> > enter a map entry for the router that it replied to.
> >
> > Then again, if there is no ip to mac entry for the
> > cat in the either of the
> > routers arp tables, then you have other issues.
> >
> > HTH
> >
> > Barry
> >
> >
> > ----- Original Message -----
> > From: "ying c" <bf5tgh1@yahoo.com>
> > To: <swm@emanon.com>; <ccielab@groupstudy.com>
> > Sent: Saturday, October 05, 2002 5:34 PM
> > Subject: RE: Mgmt Interface 3550 in separate vlan
> > REVISITED + clarification
> > on Native VLAN
> >
> >
> > > Hi Scott,
> > >
> > > Tried it, but it did not work. I also checked
> > Cds42715
> > > that Chris mentioned, but the bug is for dot1q
> > native
> > > mode problem, which is not applied to the isl I'm
> > > doing here.
> > >
> > > Below is my topology, config and sample output,
> > > hopefully someone can point out what's wrong:
> > >
> > > R4 R5
> > > | |
> > > |----------|
> > > vlan4 | vlan 5
> > > |
> > > |-----vlan100--cat 3550
> > > |
> > > R10 (router-on-the-stick, vlan 4, 5,
> > 100)
> > >
> > > ip addresses:
> > > r4 e0: 148.24.5.4/24 in vlan 4
> > > r5 e0: 148.24.5.5/24 in vlan 5
> > > r10 BVI 1: 148.24.5.10/24
> > > Cat3550 vlan 100: 148.24.5.100/24 in vlan 100
> > > The goal is to bridge vlan 4, vlan 5 and vlan
> > 100.
> > >
> > > Cat3550 (no ip routing was applied, but not shown
> > in
> > > sh run):
> > >
> > > version 12.1
> > > !
> > > hostname Cat3550
> > > !
> > > !
> > > !
> > > interface FastEthernet0/4
> > > switchport access vlan 4
> > > switchport mode access
> > > no ip address
> > > spanning-tree portfast
> > > !
> > > interface FastEthernet0/5
> > > switchport access vlan 5
> > > switchport mode access
> > > no ip address
> > > spanning-tree portfast
> > > !
> > > interface FastEthernet0/10
> > > switchport trunk encapsulation isl
> > > switchport trunk allowed vlan 1,4,5,100,1002-1005
> > > switchport mode trunk
> > > no ip address
> > > !
> > > interface Vlan1
> > > no ip address
> > > shutdown
> > > !
> > > interface Vlan100
> > > ip address 148.24.5.100 255.255.255.0
> > > !
> > > ip default-gateway 148.24.5.10
> > > --------------------------------------
> > > R4:
> > >
> > > interface Ethernet0
> > > ip address 148.24.5.4 255.255.255.0
> > >
> > > R5:
> > >
> > > interface Ethernet0
> > > ip address 148.24.5.5 255.255.255.0
> > >
> > > R10:
> > >
> > > !
> > > version 12.2
> > > !
> > > hostname r10
> > > !
> > > !
> > > bridge irb
> > > !
> > > !
> > > interface FastEthernet0/0
> > > mac-address 0010.0010.0010
> > > no ip address
> > > no ip route-cache
> > > no ip mroute-cache
> > > duplex auto
> > > speed auto
> > > !
> > > interface FastEthernet0/0.4
> > > encapsulation isl 4
> > > no ip redirects
> > > no ip route-cache
> > > no ip mroute-cache
> > > bridge-group 1
> > > !
> > > interface FastEthernet0/0.5
> > > encapsulation isl 5
> > > no ip redirects
> > > no ip route-cache
> > > no ip mroute-cache
> > > bridge-group 1
> > > !
> > > interface FastEthernet0/0.100
> > > encapsulation isl 100
> > > no ip redirects
> > > no ip route-cache
> > > no ip mroute-cache
> > > bridge-group 1
> > > !
> > > interface BVI1
> > > ip address 148.24.5.10 255.255.255.0
> > > !
> > > bridge 1 protocol ieee
> > > bridge 1 route ip
> > > !
> > > ------------------------------------
> > > ping from r4, failed to 3550's mgmt interface:
> > >
> > > r4#ping 148.24.5.5
> > >
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 148.24.5.5,
> > timeout
> > > is 2 seconds:
> > > !!!!!
> > > Success rate is 100 percent (5/5), round-trip
> > > min/avg/max = 16/18/20 ms
> > > r4#ping 148.24.5.10
> > >
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 148.24.5.10,
> > timeout
> > > is 2 seconds:
> > > !!!!!
> > > Success rate is 100 percent (5/5), round-trip
> > > min/avg/max = 1/3/4 ms
> > > r4#ping 148.24.5.100
> > >
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 148.24.5.100,
> > > timeout is 2 seconds:
> > > .....
> > > Success rate is 0 percent (0/5)
> > > r4#
> > > -------------------------------------
> > > ping from r5, failed to 3550's mgmt interface:
> > >
> > > r5#ping 148.24.5.4
> > >
> > > Type escape sequence to abort.
> > > Sending 5, 100-byte ICMP Echos to 148.24.5.4,
> > timeout
> > > is 2 seconds:
> > > !!!!!
> > > Success rate is 100 percent (5/5), round-trip
> > > min/avg/max = 4/4/8 ms
> > > r5#ping 148.24.5.10
> > >
> >
> === message truncated ===
>
>
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This archive was generated by hypermail 2.1.4 : Tue Nov 05 2002 - 08:35:40 GMT-3