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InterVLAN and VRRP

dsolangon
Level 1
Level 1
4 Replies 4

dsolangon
Level 1
Level 1

guys check out my diagra im having problems with the gateway 172.31.10.1

i can reach all the switch virtual interfaces

but i cannot ping the router 172.31.10.5   /24  , 172.31.10.4   /24   which is connected on port 1& 2 of the coreswitch under vlan 1

wherein:

CORE

MASTER core Switch

WAN 1 = ACCESS VLAN 1  port 1/0/1 link to 172.31.10.5   /24

servers,printers = port 1/0/3- 1/0/15    ip 172.31.10.X /24 gateway is 172.31.10.3  /24

22 =chanel 1 trunk

23 =chanel 2 trunk

24 =chanel 3 trunk

trunk VLAN 2,4

native vlan 2

ip route 0.0.0.0 0.0.0.0 172.31.10.1

ip routing enable

BACKUP core Switch

WAN2 = ACCESS VLAN 1  port 2/0/2 link to 172.31.10.4   /24

servers,printers = port 1/0/3- 1/0/15   /24   ip 172.31.10.X /24 gateway is 172.31.10.3   /24

22 =chanel 1 trunk

23 =chanel 2 trunk

24 =chanel 3 trunk

trunk VLAN 2,4

native vlan 2

ip route 0.0.0.0 0.0.0.0 172.31.10.1

ip routing enable

ACCESS SWITCH

switch 1 2 3

1-46 = accessports

47-48 = trunk ports with LACP

ip defaul-gateway 172.31.10.1 /24

access vlan 3

trunk dot1q

access voice vlan 4

spanning tree port fast

PC  ip address 172.31.22.X  /24    gateway 172.31.22.1 /24

IPhones 172.31.12.X            /24         gateway 172.31.12.1 /24 callserver 172.31.12.6 /16

problems:

Problem #1

from Pc i can ping:

svi 1 ; 172.31.10.3 /24

svi 2 : 172.31.22.1 /24

svi 3 : 172.31.23.1 /24

svi 4: 172.31.12.1  /24

i cannott ping 172.31.10.5

i canmott ping 172.31.10.4

i cannot ping 172.31.10.1

Problem #2

from the console of the master core

i can ping 172.31.10.1

i can ping  172.31.10.5

only if one link are plug on port 1

but...

when i link the 2 wan link on the MASTER core 1/0/1 nad BACKUP CORE  2/0/2 connection to the core switch all the ISP are down...

i cannot ping 172.31.10.1

i cannot ping  172.31.10.5

i cannot ping 172.31.10.4

look like LOOP i happening. note the links for the core switch going to the routers are VRRP links with virutal gateway of 172.31.10.1

thanks for advice on my problem

Check your spanning tree, and ensure the VRRP is working correctly.

why spaningtree ? the coreswitch are stack ?

In my experiance with stack switches, it has not always been 100%.

I have had instances in the past where 1 or more of the switches in the stack have actually seen themselves as stand-alone switches and acted accordingly.

Rule this out before looking elsewhere.

JYTPW

Review Cisco Networking for a $25 gift card