From: John Underhill (stepnwlf@magma.ca)
Date: Sun Jun 20 2004 - 04:41:16 GMT-3
Just throwing ideas out there, but could you try using a standby virtual mac
with this configuration and see if that works? Also, try increasing the mtu
size on the dot1q trunk.
----- Original Message -----
From: "Sharma, Mohit" <mohit.sharma@hp.com>
To: "Bob Sinclair" <bsin@cox.net>; "studygroup" <ccielab@groupstudy.com>
Sent: Saturday, June 19, 2004 3:03 PM
Subject: RE: HSRP with trunk ISL encap- ISSUES?
> Hi Bob,
>
> Thanx for your message.
>
> My router in question is a 7500 with RSP2 but it is running on
> 12.2(15)T12.
> Also the problem is that it is not ONLY failing to respond to the
> virtual address but also to its configured ip address. As soon as I
> configure HSRP with the ISL trunk I cant even ping the directly
> connected ip of R2 and also loose eigrp and BGP neighbor ship.
>
> I am not sure if after configuring the HSRP the source IP is the virtual
> address from R6 or the configured IP address. I will do some debugs and
> check.
> However also from R2 also it not able to reach the configured IP of R6
> and HSRP is only initializing.
>
> Regards,
> Mohit
>
> -----Original Message-----
> From: Bob Sinclair [mailto:bsin@cox.net]
> Sent: Saturday, June 19, 2004 8:53 PM
> To: Sharma, Mohit; studygroup
> Subject: Re: HSRP with trunk ISL encap- ISSUES?
>
> Mohit,
>
> HSRP should work with ISL. There is a bug reported for certain 12.0 IOS
> on RSP2. Could this be your problem?
>
> http://www.cisco.com/cgi-bin/Support/Bugtool/onebug.pl?bugid=CSCdm68811
>
> HTH,
>
> Bob Sinclair
> CCIE #10427, CISSP, MCSE
> www.netmasterclass.net
>
> ----- Original Message -----
> From: "Sharma, Mohit" <mohit.sharma@hp.com>
> To: "studygroup" <ccielab@groupstudy.com>
> Sent: Saturday, June 19, 2004 8:03 AM
> Subject: HSRP with trunk ISL encap- ISSUES?
>
>
> > HI All,
> >
> > Has anyone seen this before?
> >
> > I have R2 and R6 connected with each other via a 3550.
> >
> > Rack1R2 -----3550------------------Rack1R6(fa3/1/0.26)
> > |
> > ISL trunk
> >
> > If I enable HSRP on R2 and R6 all connection is lost between them.
> >
> > If I then change the trunk encap to dot1q on R6 and the 3550, all
> works
> > fine.
> >
> > Does anybody know why this is??
> >
> > Rack1R6#
> > interface FastEthernet3/1/0.6
> > encapsulation isl 6
> > ip address 130.1.26.6 255.255.255.0
> > no ip redirects
> > End
> > Rack1R6(config)#int fastEthernet 3/1/0.26
> > Rack1R6(config-subif)# standby ip 130.1.26.254
> > Rack1R6(config-subif)#
> > *Jun 19 12:07:24.275: %DUAL-5-NBRCHANGE: IP-EIGRP(0) 100: Neighbor
> > 130.1.26.2 (FastEthernet3/1/0.26) is down: retry limit exceeded
> > Rack1R6(config-subif)#
> > *Jun 19 12:07:24.275: destroy peer: 130.1.26.2
> > Rack1R6(config-subif)#do ping 130.1.26.2
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 130.1.26.2, timeout is 2 seconds:
> > .....
> > Success rate is 0 percent (0/5)
> > -----------------------------------
> > With dot1q
> > interface FastEthernet3/1/0.26
> > encapsulation dot1Q 26
> > ip address 130.1.26.6 255.255.255.0
> > no ip redirects
> > standby ip 130.1.26.254
> > standby priority 110
> > standby preempt delay minimum 10
> > End
> > Rack1R6(config-subif)#do ping 130.1.26.2
> >
> > Type escape sequence to abort.
> > Sending 5, 100-byte ICMP Echos to 130.1.26.2, timeout is 2 seconds:
> > .!!!!
> > Success rate is 80 percent (4/5), round-trip min/avg/max = 4/4/4 ms
> > Rack1R6(config-subif)#do sh ru int
> > *Jun 19 12:11:02.591: %BGP-5-ADJCHANGE: neighbor 130.1.26.2 Up
> >
> > Thanx,
> > Mohit.
> >
> >
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