From: Vincent Mashburn (vmashburn@fedex.com)
Date: Fri Nov 24 2006 - 11:31:17 ART
From my understanding, the Primary/Backup solution and the Redundancy
solution do the same thing at layer 3, but not at Layer 2. The
"Redundancy" option uses the virtual HSRP mac-address for layer-2
connectivity and the "Primary/Backup" solution uses the physical
mac-address for Layer-2 connectivity. The only place I have seen the
"Primary/Backup" solution is when peering with Internet routers over a
LAN segment as 2 "default-gateway" routers, and the Internet routers are
not performing any Default-gateway functionality.
Vince Mashburn
Sr. Voice / Data Engineer
901-263-5072
CCVP, CCNP
Cisco IP Telephony Support Specialist
Cisco IP Telephony Operations Specialist
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
david robin
Sent: Thursday, November 23, 2006 4:20 AM
To: Cisco certification
Subject: Question about SNAT configuration
Dear All,
I read about stateful NAT but there is something cofuse me a lot,
what confuse me is the HSRP and primary/backup configuration.
what is the different between the following two examples :
Configuring SNAT with HSRP
!
ip nat Stateful id 1
redundancy SNATHSRP
mapping-id 10
ip nat pool SNATPOOL1 11.1.1.1 11.1.1.9 prefix-length 24
ip nat inside source route-map rm-101 pool SNATPOOL1 mapping-id 10
overload
ip classless
ip route 11.1.1.0 255.255.255.0 Null0
no ip http server
ip pim bidir-enable
Configuring SNAT Primary/Backup
!
ip nat Stateful id 1
primary 10.88.194.17
peer 10.88.194.18
mapping-id 10
!
ip nat Stateful id 2
backup 10.88.194.17
peer 10.88.194.17
mapping-id 10
Does in the second example we will need HSRP
and in case we will what is difference when using primary/backup ?
please help me
thanks in advance
This archive was generated by hypermail 2.1.4 : Fri Dec 01 2006 - 08:05:48 ART