RE: ip verify unicast reverse-path... GONE?!?!

From: MMoniz (ccie2002@tampabay.rr.com)
Date: Fri May 28 2004 - 18:43:59 GMT-3


hmmmm actually I am running 12.1.19. Can't imagine it is gone though.
Strange!! I was informed the reverse path was
suppose to be replaced with the source!!

Unfortunately I can't upgrade at this time as it is on it's own net with no
ftp/tftp.

Sorry,

mike

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Kenneth Wygand
Sent: Friday, May 28, 2004 5:04 PM
To: MMoniz; Group Study
Subject: RE: ip verify unicast reverse-path... GONE?!?!

Are you sure you are running 12.1(20)EA2 ?? I don't have that option.
See below.

SWITCH#conf t
Enter configuration commands, one per line. End with CNTL/Z.
SWITCH(config)#int vlan 10
SWITCH(config-if)#ip ?
Interface IP configuration subcommands:
  access-group Specify access control for packets
  accounting Enable IP accounting on this interface
  address Set the IP address of an interface
  authentication authentication subcommands
  bandwidth-percent Set EIGRP bandwidth limit
  bgp BGP interface commands
  broadcast-address Set the broadcast address of an interface
  cef Cisco Express Fowarding interface commands
  cgmp Enable/disable CGMP
  dhcp Configure DHCP parameters for this interface
  directed-broadcast Enable forwarding of directed broadcasts
  dvmrp DVMRP interface commands
  hello-interval Configures IP-EIGRP hello interval
  helper-address Specify a destination address for UDP broadcasts
  hold-time Configures IP-EIGRP hold time
  igmp IGMP interface commands
  irdp ICMP Router Discovery Protocol
  load-sharing Style of load sharing
  local-proxy-arp Enable local-proxy ARP
  mask-reply Enable sending ICMP Mask Reply messages
  mrm Configure IP Multicast Routing Monitor tester
  mroute-cache Enable switching cache for incoming multicast
packets
  mtu Set IP Maximum Transmission Unit
  multicast IP multicast interface commands
  ospf OSPF interface commands
  pim PIM interface commands
  policy Enable policy routing
  probe Enable HP Probe support
  proxy-arp Enable proxy ARP
  rarp-server Enable RARP server for static arp entries
  redirects Enable sending ICMP Redirect messages
  rgmp Enable/disable RGMP
  rip Router Information Protocol
  route-cache Enable fast-switching cache for outgoing packets
  sap Session Advertisement Protocol interface commands
  sdr Session Directory Protocol interface commands
  security DDN IP Security Option
  split-horizon Perform split horizon
  summary-address Perform address summarization
  unnumbered Enable IP processing without an explicit address
  unreachables Enable sending ICMP Unreachable messages
  urd Configure URL Rendezvousing
  vrf VPN Routing/Forwarding parameters on the interface
  wccp WCCP interface commands

SWITCH(config-if)#ip verify?
% Unrecognized command
SWITCH(config-if)#ip verify

SWITCH#sh ver
Cisco Internetwork Operating System Software
IOS (tm) C3550 Software (C3550-I5Q3L2-M), Version 12.1(20)EA2, RELEASE
SOFTWARE
(fc1)
Copyright (c) 1986-2004 by cisco Systems, Inc.
Compiled Wed 19-May-04 05:06 by antonino
Image text-base: 0x00003000, data-base: 0x0082D44C

ROM: Bootstrap program is C3550 boot loader

SWITCH uptime is 41 minutes
System returned to ROM by power-on
System restarted at 16:19:45 EDT Fri May 28 2004
System image file is
"flash:c3550-i5q3l2-mz.121-20.EA2/c3550-i5q3l2-mz.121-20.EA
2.bin"

cisco SWITCH (PowerPC) processor (revision G0) with 65526K/8192K bytes
of
memory.
Processor board ID CAT0738X05G
Last reset from warm-reset
Bridging software.
Running Layer2/3 Switching Image

Ethernet-controller 1 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 2 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 3 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 4 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 5 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 6 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 7 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 8 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 9 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 10 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 11 has 1 Gigabit Ethernet/IEEE 802.3 interface

Ethernet-controller 12 has 1 Gigabit Ethernet/IEEE 802.3 interface

12 Gigabit Ethernet/IEEE 802.3 interface(s)

The password-recovery mechanism is enabled.
384K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address: 00:0D:BC:E7:A7:80
Motherboard assembly number: 73-5526-08
Power supply part number: 34-0967-01
Motherboard serial number: CAT07380BTP
Power supply serial number: DTH073416YL
Model revision number: G0
Motherboard revision number: A0
Model number: WS-C3550-12G
System serial number: CAT0738X05G
Configuration register is 0x10F

Kenneth E. Wygand
Systems Engineer, Project Services
CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
Network+, A+
Custom Computer Specialists, Inc.
"The only unattainable goal is the one not attempted."
-Anonymous

-----Original Message-----
From: MMoniz [mailto:ccie2002@tampabay.rr.com]
Sent: Friday, May 28, 2004 4:24 PM
To: Kenneth Wygand; Group Study
Subject: RE: ip verify unicast reverse-path... GONE?!?!

It is functionally replaced with:

Cat-3550(config-if)#ip verify uni ?
reverse-path Reverse path validation of source address (old command
format)<<<<<<<<<<
source Validation of source address

interface Vlan2
ip address 133.5.23.8 255.255.255.0
ip verify unicast source reachable-via rx

mike

-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Kenneth Wygand
Sent: Friday, May 28, 2004 4:08 PM
To: Group Study
Subject: ip verify unicast reverse-path... GONE?!?!

Well...

Due to CDP bug I just upgraded a test 3550 EMI switch from 12.1(19)EA1
to 12.1(20)EA2. To my surprise, all of my interface configuration lines
"ip verify unicast reverse-path" are gone and the command is no longer
recognized.

I've searched each of the release notes incrementally from 12.1(19)EA1
through 12.1(20)EA2 and there is no mention of this command being
removed or the functionality replaced.

I've just checked the command references and it's not listed in either
version, but it was available in 12.1(19)EA1.

Any run into this before or have any ideas?

Kenneth E. Wygand
Systems Engineer, Project Services

CISSP #37102, CCNP, CCDP, ACSP, Cisco IPT Design Specialist, MCP, CNA,
Network+, A+
Custom Computer Specialists, Inc.

"I am not really smart. I just stick with problems longer."
-Albert Einstein

Custom Computer Specialists, Inc.

"Celebrating 25 Years of Excellence"

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