Nslookup scan ip not pingable in rac node

Question

All,
I'm planning to install 11.2.0.1 rac on my laptop. As a first step I have configured dns in separate vmware and configured rac1 node as well. Both dns and rac1 public ip addresses are pingable from each others and from host machine.But the rac-scan ip is only pingable from dns server and not pingable from rac1 server.  Will this make any problem if dns server running on 32 bit and rac nodes running on 64 bit server ? Please let me know if I have anything missed here. Thanks again.
About posting on this forum. I have used [code]  [/code] to format the code previously. But this time it is not working. Also there is no option to preview the code before posting.
use spaces to separate multiple tags I'm not clear about this. I read https://forums.oracle.com/thread/865295 this article how to post the code. It says to use  \ . If you guide me how to format the code I can use that in future.
Host OS : Windows 8 64 bit
Guest OS -1 : dns 32 bit Linux
  [root@dns32 ~]# uname -a
   Linux dns32.testenv.com 2.6.18-164.el5 #1 SMP Thu Sep 3 02:16:47 EDT 2009 i686 i686 i386 GNU/Linux
Guest OS -2 : rac1 64 bit Linux
  [root@rac1 ~]# uname -a
   Linux rac1 2.6.18-194.el5 #1 SMP Mon Mar 29 22:10:29 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux
Guest OS-3 : rac2 - yet to configure 64 bit Linux
@ dns server
[root@dns32 ~]# nslookup rac-scan
Server:         192.168.1.26
Address:        192.168.1.26#53
Name:   rac-scan.testenv.com
Address: 192.168.1.57
Name:   rac-scan.testenv.com
Address: 192.168.1.58
Name:   rac-scan.testenv.com
Address: 192.168.1.59
[root@dns32 ~]# cat /etc/resolv.conf
search testenv.com
nameserver 192.168.1.26
[root@dns32 ~]# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0C:29:EF:03:D3
          inet addr:192.168.1.26  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:feef:3d3/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2802 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2691 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:210115 (205.1 KiB)  TX bytes:208344 (203.4 KiB)
          Interrupt:67 Base address:0x2024
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:2308 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2308 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:5494207 (5.2 MiB)  TX bytes:5494207 (5.2 MiB)
sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
[root@dns32 ~]# ping 192.168.1.26
PING 192.168.1.26 (192.168.1.26) 56(84) bytes of data.
64 bytes from 192.168.1.26: icmp_seq=1 ttl=64 time=0.200 ms
--- 192.168.1.26 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.200/0.200/0.200/0.000 ms
[root@dns32 ~]# ping 192.168.1.27
PING 192.168.1.27 (192.168.1.27) 56(84) bytes of data.
64 bytes from 192.168.1.27: icmp_seq=1 ttl=64 time=0.330 ms
--- 192.168.1.27 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.330/0.330/0.330/0.000 ms
@rac1 node :
[root@rac1 ~]# cat /etc/resolv.conf
search testenv.com
nameserver 192.168.1.26
[root@rac1 ~]#  nslookup rac-scan
;; connection timed out; no servers could be reached
[root@rac1 ~]# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 00:0C:29:75:A9:39
          inet addr:192.168.1.27  Bcast:192.168.1.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe75:a939/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:500 errors:0 dropped:0 overruns:0 frame:0
          TX packets:357 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:52333 (51.1 KiB)  TX bytes:39556 (38.6 KiB)
eth1      Link encap:Ethernet  HWaddr 00:0C:29:75:A9:43
          inet addr:192.168.2.37  Bcast:192.168.2.255  Mask:255.255.255.0
          inet6 addr: fe80::20c:29ff:fe75:a943/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:160 errors:0 dropped:0 overruns:0 frame:0
          TX packets:50 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:20359 (19.8 KiB)  TX bytes:6518 (6.3 KiB)
lo        Link encap:Local Loopback
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:1940 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1940 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:4783881 (4.5 MiB)  TX bytes:4783881 (4.5 MiB)
sit0      Link encap:IPv6-in-IPv4
          NOARP  MTU:1480  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:0 (0.0 b)  TX bytes:0 (0.0 b)
[root@rac1 ~]# ping 192.168.1.26
PING 192.168.1.26 (192.168.1.26) 56(84) bytes of data.
64 bytes from 192.168.1.26: icmp_seq=1 ttl=64 time=0.284 ms
64 bytes from 192.168.1.26: icmp_seq=2 ttl=64 time=0.456 ms
--- 192.168.1.26 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 0.284/0.370/0.456/0.086 ms
[root@rac1 ~]# ping 192.168.1.27
PING 192.168.1.27 (192.168.1.27) 56(84) bytes of data.
64 bytes from 192.168.1.27: icmp_seq=1 ttl=64 time=0.032 ms
--- 192.168.1.27 ping statistics ---
1 packets transmitted, 1 received, 0% packet loss, time 0ms
rtt min/avg/max/mdev = 0.032/0.032/0.032/0.000 ms
Thanks
Arul

Answer 1

Thanks Saurabh. I have configured dns using this blog " http://dnccfg.blogspot.in/2012/08/dns-configuration-on-linux.html.html
[root@dns32 etc]# cat named.conf
// named.caching-nameserver.conf
// Provided by Red Hat caching-nameserver package to configure the
// ISC BIND named(8) DNS server as a caching only nameserver
// (as a localhost DNS resolver only).
// See /usr/share/doc/bind*/sample/ for example named configuration files.
// DO NOT EDIT THIS FILE - use system-config-bind or an editor
// to create named.conf - edits to this file will be lost on
// caching-nameserver package upgrade.
options {
        listen-on port 53 { 192.168.1.26; };
        listen-on-v6 port 53 { ::1; };
        directory       "/var/named";
        dump-file       "/var/named/data/cache_dump.db";
        statistics-file "/var/named/data/named_stats.txt";
        memstatistics-file "/var/named/data/named_mem_stats.txt";
        // Those options should be used carefully because they disable port
        // randomization
        // query-source    port 53;
        // query-source-v6 port 53;
        allow-query     { any; };
        allow-query-cache { localhost; };
logging {
        channel default_debug {
                file "data/named.run";
                severity dynamic;
view localhost_resolver {
        match-clients      { any; };
        match-destinations { 192.168.1.26; };
        recursion yes;
        include "/etc/named.rfc1912.zones";
[root@dns32 etc]# cat named.rfc1912.zones
// named.rfc1912.zones:
// Provided by Red Hat caching-nameserver package
// ISC BIND named zone configuration for zones recommended by
// RFC 1912 section 4.1 : localhost TLDs and address zones
// See /usr/share/doc/bind*/sample/ for example named configuration files.
zone "." IN {
        type hint;
        file "named.ca";
zone "testenv.com" IN {
        type master;
        file "forward.zone";
        allow-update { none; };
zone "localhost" IN {
        type master;
        file "localhost.zone";
        allow-update { none; };
zone "1.168.192.in-addr.arpa" IN {
        type master;
        file "reverse.zone";
        allow-update { none; };
[root@dns32 named]# cat forward.zone
$TTL    86400
@               IN SOA  dns32.testenv.com. root.dns32.testenv.com. (
                                        42              ; serial (d. adams)
                                        3H              ; refresh
                                        15M             ; retry
                                        1W              ; expiry
                                        1D )            ; minimum
                IN NS           dns32.testenv.com.
dns32     IN A 192.168.1.26
rac1      IN A 192.168.1.27
rac2      IN A 192.168.1.28
rac1-priv  IN A 192.168.2.37
rac2-priv  IN A 192.168.2.38
rac1-vip  IN A 192.168.1.47
rac2-vip  IN A 192.168.1.48
rac-scan  IN A 192.168.1.57
rac-scan  IN A 192.168.1.58
rac-scan  IN A 192.168.1.59
[root@dns32 named]# cat reverse.zone
$TTL    86400
@       IN      SOA     dns32.testenv.com. root.dns32.testenv.com.  (
                                      1997022700 ; Serial
                                      28800      ; Refresh
                                      14400      ; Retry
                                      3600000    ; Expire
                                      86400 )    ; Minimum
        IN      NS      dns32.testenv.com.
26       IN      PTR     dns32.testenv.com.
27        IN      PTR   rac1.testenv.com.
28        IN      PTR   rac2.testenv.com.
47        IN      PTR   rac1-vip.testenv.com.
48        IN      PTR   rac2-vip.testenv.com.
57        IN      PTR   rac-scan.testenv.com.
58        IN      PTR   rac-scan.testenv.com.
59        IN      PTR   rac-scan.testenv.com.
Thanks
Arul